Aluminium alloy 3003 3003

Al-Mn-Cu wrought alloy (3003). Composition limits in wt%: Mn 1.0 to 1.5, Cu 0.05 to 0.20, Fe max 0.70, Si max 0.60, Zn max 0.10, Mg max 0.05, each other element max 0.05 and total others max 0.15, Al remainder

Also known as UNS A93003, EN 3.0517, ASTM B209, AMS 4006, AMS 4008, ISO 6361

3003 is a wrought aluminium-manganese alloy (UNS A93003, alternate designation 3.0517) with 1.0 to 1.5 wt% manganese and 0.05 to 0.20 wt% copper, aluminium as the balance.

10 sources · Updated 2026-10-24 · CC BY 4.0

Evidence level

2 of 5

Lab-measured

Strength by temper

14 to 19 ksi (O) up to 27 ksi min (H18) tensile

Yield by temper

5 ksi (O) to 24 ksi (H18)

Elongation

25 % (O) to 4 % (H16, H18)

Stiffness and weight

2.73 g/cm3 and 69.5 GPa (O)

Heat conduction

190 W/m.K (O)

Recipe, share of the weight

Al balance (Smiths Bal; aircraftmaterials Rem)Aluminium
Mn Smiths prints min 1.10 and max 1.50; aircraftmaterials prints 1.0 to 1.5Manganese
Cu 0.05 to 0.2%Copper
Fe maximum 0.70Iron
Si maximum 0.60Silicon
Zn maximum 0.10Zinc
Mg maximum 0.05, printed by Smiths onlyMagnesium

Best for

Sheet and formed parts that need moderate strength, good workability and weldability, and resistance to atmospheric corrosion, such as storage tanks, chemical equipment and heat exchangers, with the temper named

Weakest at

Strength depends on temper, from 14 to 19 ksi tensile in O to 27 ksi minimum in H18, and no seawater rating or measured corrosion rate for 3003 was found in the sources read

Risk at a glance

People No data. No hazard data recorded
If it fails Moderate. Loss of ductility in harder tempers
Corrosion Low. Smiths rates 3003 very good for resistance to atmospheric corrosion.

Quick facts: 3003

Key properties of 3003
Property	Value	Basis
Density	2.73 g/cm³	1 sourced value
Yield strength	34.5 to 165 MPa	6 sourced values across conditions
Tensile strength	96.5 to 207 MPa	6 sourced values across conditions
Young's modulus	69.5 GPa	1 sourced value
Thermal conductivity	190 W/(m·K)	1 sourced value
Thermal expansion (CTE)	23.1 ppm/K	1 sourced value
Melting point	655 °C	1 sourced value

What is the density of Aluminium alloy 3003?

Aluminium alloy 3003 has a density of 2.73 g/cm³. The source and test conditions are listed in the properties table on this page.

What is the thermal conductivity of Aluminium alloy 3003?

Aluminium alloy 3003 has a thermal conductivity of 190 W/(m·K). The source and test conditions are listed in the properties table on this page.

What is the coefficient of thermal expansion of Aluminium alloy 3003?

Aluminium alloy 3003 has a coefficient of thermal expansion of 23.1 ppm/K. The source and test conditions are listed in the properties table on this page.

What is the melting point of Aluminium alloy 3003?

Aluminium alloy 3003 has a melting point of 655 °C. The source and test conditions are listed in the properties table on this page.

What is the yield strength of Aluminium alloy 3003?

Aluminium alloy 3003 has a yield strength of 34.5 to 165 MPa. The range covers 6 sourced values across the tempers, forms and test conditions the sources report; room-temperature values are used where a source states a temperature.

What are the other names and codes for Aluminium alloy 3003?

Aluminium alloy 3003 is also written as UNS A93003, EN 3.0517, ASTM B209, AMS 4006, AMS 4008, ISO 6361. Each code is printed in the source listed beside it in the designations table.

What is Aluminium alloy 3003 used for?

Uses recorded in the sources include Heat exchangers; Storage tanks and chemical equipment; Decorative trim.

Why it exists

Aluminium alloy 3003 is a wrought alloy in the 3xxx (manganese) series. Manganese, at 1.0 to 1.5 wt%, is the main addition. The aircraftmaterials page says it makes 3003 20% stronger than alloy 1100, and that the alloy keeps the corrosion resistance and workability of commercially pure aluminium. The temper code (for example O, H14 or H18) records the cold work given, and this profile keeps each temper apart. Smiths lists storage tanks, chemical equipment, cooking and kitchen equipment and heat exchangers as its typical uses.

Where it's used

Heat exchangers

Smiths lists heat exchangers among typical applications.

Storage tanks and chemical equipment

Smiths and the aircraftmaterials page both list these uses.

Cooking and kitchen equipment

Smiths and the aircraftmaterials page both list cooking and kitchen equipment. This is a consumer use, not a space use.

Recipe

Wrought aluminium-manganese alloy with 1.0 to 1.5 wt% manganese and 0.05 to 0.20 wt% copper, iron and silicon held to 0.70 and 0.60 wt% maximum, and aluminium as the balance (Smiths and aircraftmaterials composition tables; Wikipedia agrees). Manganese is the main addition. The alloy is sold as sheet, plate, tube and foil (aircraftmaterials).

What 3003 is made of
Ingredient	Share of the weight	What it does
Aluminium Al	balance (Smiths Bal; aircraftmaterials Rem)	Matrix of the alloy (the balance of the composition).
Manganese Mn	Smiths prints min 1.10 and max 1.50; aircraftmaterials prints 1.0 to 1.5	Main alloying element. The aircraftmaterials page says manganese increases the strength, making 3003 20% stronger than alloy 1100.
Copper Cu	0.05 to 0.2%	Minor addition inside the composition limits.
Iron Fe	maximum 0.70	Impurity, held to a maximum limit.
Silicon Si	maximum 0.60	Impurity, held to a maximum limit.
Zinc Zn	maximum 0.10	Impurity, held to a maximum limit.
Magnesium Mg	maximum 0.05, printed by Smiths only	Impurity, held to a maximum limit.

Weight shares are as printed in the sources.

What it can do

Strength by temper

14 to 19 ksi (O) up to 27 ksi min (H18) tensile

Tensile strength rises from 14 to 19 ksi in O, through 17 to 23 ksi in H12, 20 to 26 ksi in H14 and 24 to 30 ksi in H16, to 27 ksi minimum in H18 (aircraftmaterials, 0.064 in sheet, each temper kept separate).

Yield by temper

5 ksi (O) to 24 ksi (H18)

The yield column gives 5 ksi in O, 12 ksi in H12, 17 ksi in H14, 21 ksi in H16 and 24 ksi in H18 (ksi min, as printed).

Elongation

25 % (O) to 4 % (H16, H18)

Elongation in 2 in falls from 25 % in O to 6 % in H12, 5 % in H14 and 4 % in H16 and H18. Smiths gives 25 % in O on a 50 mm gauge.

Stiffness and weight

2.73 g/cm3 and 69.5 GPa (O)

In the O condition, density is 2.73 g/cm3 and the modulus of elasticity is 69.5 GPa (Smiths).

Heat conduction

190 W/m.K (O)

Thermal conductivity is 190 W/m.K in the O condition (Smiths).

Thermal expansion

23.1 ppm/K (O)

Smiths prints 23.1x10-6 /K for the O condition, which is 23.1 ppm/K.

Melting point

655 °C

Smiths gives a single melting point of 655 °C. A solidus and liquidus range is not printed.

Formability

0 T (O, H12, H14) to 1 1/2 to 3 T (H18) minimum 90-degree bend

The minimum 90-degree cold bend radius for 0.064 in sheet is 0 T in O, H12 and H14, 1/2 to 1 1/2 T in H16 and 1 1/2 to 3 T in H18.

Corrosion resistance

very good (Smiths) and excellent (aircraftmaterials)

Smiths rates atmospheric corrosion resistance very good, and the aircraftmaterials page says excellent. Neither gives an environment, exposure time or rate.

Weldability

very good (Smiths)

The Smiths datasheet rates 3003 very good for weldability. No welding procedure or joint data was read.

How it compares

Compared with 5052, the two datasheets read here point in different directions. The Smiths 5052 datasheet says that, when annealed, 5052 is stronger than 1100 and 3003, and it rates 5052 very good against seawater and marine atmospheres. The Smiths 3003 datasheet gives no seawater rating, only very good resistance to atmospheric corrosion. The two records use different tempers (O for 3003 here, H32 for 5052 in its Smiths table), so they do not give a like-for-like strength ranking, and this profile makes none. The main addition is manganese for 3003 and magnesium for 5052. On these sources 5052 has the printed seawater rating. See the aluminium-5052 profile for its own values.

The same measurements for each material, so you can compare them. Each row names the key condition under the value; the full conditions and methods are in the numbered notes under Technical details. Other materials are shown beside it; each was measured under its own conditions, so open its page before comparing closely. Compare every grade in the family.

Benchmarks
Measurement	3003	6061	7075-T6	2024	5052	5XXX	2195 (Al-Cu-Li)	Al	1050	2011	2014	2017	2017A	2219	2319	2618A	3103	4047	5019	5056	5083	AlMg2	AlMg3	6013	6063	6082	6101	AA7050	AA8011	Au-Al IMCs	Al master alloys
Thermal behavior and safety
Melting point, datasheet value, O	655 °C²	no data	532 °C	no data	607.2 to 649 °C	no data	1020 degF	660 °C	645 to 657 °C	540 °C	535 °C	510 °C	510 °C	543 °C	543 to 643 °C	549 °C	655 °C	1068 to 1080 °F	575 to 630 °C	565 to 640 °C	570 °C	605 to 650 °C	590 to 645 °C	579 °C	600 °C	575 °C	1090 °F	490 °C	640 to 655 °C	no data	880 °C
Thermal conductivity, datasheet value, O	190 W/m.K⁵	167 W/(m·K)	130 W/m·K	121 W/m-K	138 W/m-K	138 W/(m·K)	no data	220 W/(m·K)	229 W/m.K	140 W/m.K	138 W/(m·K)	140 W/m.K	140 W/m.K	130 W.m/m2.°C	no data	147 W/m.K	160 W/m.K	no data	110 to 140 W/(m·K)	109 to 117 W/(m·K)	121 W/(m·K)	138 W/(m·K)	140 to 160 W/(m·K)	164 W/(m·K)	200 W/(m·K)	180 W/(m·K)	no data	154 W/(m·K)	210 to 220 W/(m·K)	no data	no data
Physical and electrical
Density, datasheet value, O	2.73 g/cm³¹	2.7 g/cm³	2.8 Mg/m3	2.78 g/cc	2.68 g/cc	2.68 g/cm³	0.096 lb/in3	2.7 g/cm³	2.71 g/cm³	2.82 g/cm³	2.82 g/cm³	2.79 g/cm³	2.79 g/cm³	2.84 g/cm³	2.84 g/cm³	2.76 g/cm³	2.73 g/cm³	2.65 g/cm³	2.64 g/cm³	2.64 g/cm³	2.65 g/cm³	2.69 g/cm³	2.67 g/cm³	2.71 g/cm³	2700 kg/m3	2.7 g/cm³	0.097 lb/cu.in	2.83 g/cm³	2.71 g/cm³	no data	no data
Hardness, Vickers, datasheet value, O	29 HV¹⁰	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	75 HV	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data
Other measurements
Coefficient of thermal expansion, datasheet value, O	23.1 ppm/K³	23.6 ppm/K	23.4 µm/m·K	23.2 ppm/K	24.8 µm/m-°C	24 ppm/K	no data	22.5 ppm/K	23.5 x10-6/K	21.4 µm/m.°C	23 ppm/K	22.9 µm/(m·°C)	22.9 µm/m.°C	22.5 x10^-6 m/m.°C	no data	21.6 µm/m°C	23.1 x10-6/K	no data	no data	2.41×10^-5 1/K	25 ppm/K	23.8 µm/m/°C	23.9 ppm/K	21.7 µm/m°C	23.5 ppm/K	23.1 ppm/K	no data	23.5 ppm/K	2.35×10^-5 1/K	no data	no data
Modulus of elasticity, datasheet value, O	69.5 GPa⁴	68.9 GPa	71 GPa	73.1 GPa	70.3 GPa	70.3 GPa	11 MSI	69 GPa	69000 MPa	70 GPa	71 GPa	72 GPa	72 GPa	73.8 x10^3 N/mm2	no data	71 GPa	69.5 GPa	no data	70 GPa	71 GPa	72 GPa	70 GPa	70 GPa	71 GPa	69.5 GPa	70 GPa	no data	71.5 GPa	70 GPa	no data	no data
Tensile strength, datasheet value, O	110 MPa⁶	310 MPa	572 MPa	469 MPa	28 ksi	228 MPa	80 ksi	88 MPa	105 to 145 MPa	300 MPa	> 460 MPa	427 MPa	427 MPa	> 62 ksi	160 MPa	420 MPa	> 140 MPa	124 MPa	270 to 350 MPa	300 MPa	275 to 350 MPa	190 to 230 MPa	190 to 260 MPa	410 MPa	27 ksi	> 300 MPa	32000 psi	> 483 MPa	180 to 195 MPa	no data	no data
Elongation at break, datasheet value, O	25 %⁷	17 %	11 %	19 %	25 %	12 %	8 %	50 to 65 %	4 to 8 %	16 %	> 6 %	18 %	18 %	> 6 %	12 %	> 5 %	> 8 %	12 %	> 2 %	20 %	> 12 %	4 to 12 %	> 12 %	4 %	8 %	> 9 %	> 8 %	> 7 %	> 1 %	no data	no data
Proof stress, datasheet value, O (printed as Proof Stress)	50 MPa⁸	276 MPa	503 MPa	324 MPa	13 ksi	193 MPa	74 ksi	29 MPa	> 85 MPa	140 MPa	> 400 MPa	276 MPa	276 MPa	> 50 ksi	70 MPa	350 MPa	> 110 MPa	55 MPa	no data	no data	> 125 MPa	> 120 MPa	> 80 MPa	350 MPa	21 ksi	> 255 MPa	28000 psi	> 414 MPa	no data	no data	no data
Shear strength, datasheet value, O	75 MPa⁹	no data	no data	no data	no data	no data	no data	no data	70 N/mm2	no data	no data	no data	no data	no data	no data	260 MPa	90 MPa	no data	no data	no data	175 MPa	no data	no data	240 MPa	no data	no data	no data	no data	no data	no data	no data
Tensile strength, table value, O, sheet 0.064 in thick	14 ksi¹¹	310 MPa	572 MPa	469 MPa	28 ksi	228 MPa	80 ksi	88 MPa	105 to 145 MPa	300 MPa	> 460 MPa	427 MPa	427 MPa	> 62 ksi	160 MPa	420 MPa	> 140 MPa	124 MPa	270 to 350 MPa	300 MPa	275 to 350 MPa	190 to 230 MPa	190 to 260 MPa	410 MPa	27 ksi	> 300 MPa	32000 psi	> 483 MPa	180 to 195 MPa	no data	no data
Tensile strength, table value, H12, sheet 0.064 in thick	17 ksi¹²	310 MPa	572 MPa	469 MPa	28 ksi	228 MPa	80 ksi	88 MPa	105 to 145 MPa	300 MPa	> 460 MPa	427 MPa	427 MPa	> 62 ksi	160 MPa	420 MPa	> 140 MPa	124 MPa	270 to 350 MPa	300 MPa	275 to 350 MPa	190 to 230 MPa	190 to 260 MPa	410 MPa	27 ksi	> 300 MPa	32000 psi	> 483 MPa	180 to 195 MPa	no data	no data
Tensile strength, table value, H14, sheet 0.064 in thick	20 ksi¹³	310 MPa	572 MPa	469 MPa	28 ksi	228 MPa	80 ksi	88 MPa	105 to 145 MPa	300 MPa	> 460 MPa	427 MPa	427 MPa	> 62 ksi	160 MPa	420 MPa	> 140 MPa	124 MPa	270 to 350 MPa	300 MPa	275 to 350 MPa	190 to 230 MPa	190 to 260 MPa	410 MPa	27 ksi	> 300 MPa	32000 psi	> 483 MPa	180 to 195 MPa	no data	no data
Tensile strength, table value, H16, sheet 0.064 in thick	24 ksi¹⁴	310 MPa	572 MPa	469 MPa	28 ksi	228 MPa	80 ksi	88 MPa	105 to 145 MPa	300 MPa	> 460 MPa	427 MPa	427 MPa	> 62 ksi	160 MPa	420 MPa	> 140 MPa	124 MPa	270 to 350 MPa	300 MPa	275 to 350 MPa	190 to 230 MPa	190 to 260 MPa	410 MPa	27 ksi	> 300 MPa	32000 psi	> 483 MPa	180 to 195 MPa	no data	no data
Tensile strength, table value, H18, sheet 0.064 in thick	27 ksi¹⁵	310 MPa	572 MPa	469 MPa	28 ksi	228 MPa	80 ksi	88 MPa	105 to 145 MPa	300 MPa	> 460 MPa	427 MPa	427 MPa	> 62 ksi	160 MPa	420 MPa	> 140 MPa	124 MPa	270 to 350 MPa	300 MPa	275 to 350 MPa	190 to 230 MPa	190 to 260 MPa	410 MPa	27 ksi	> 300 MPa	32000 psi	> 483 MPa	180 to 195 MPa	no data	no data
Yield strength, table value, O, sheet 0.064 in thick	5 ksi¹⁶	276 MPa	503 MPa	324 MPa	13 ksi	193 MPa	74 ksi	29 MPa	> 85 MPa	140 MPa	> 400 MPa	276 MPa	276 MPa	> 50 ksi	70 MPa	350 MPa	> 110 MPa	55 MPa	no data	no data	> 125 MPa	> 120 MPa	> 80 MPa	350 MPa	21 ksi	> 255 MPa	28000 psi	> 414 MPa	no data	no data	no data
Yield strength, table value, H12, sheet 0.064 in thick	12 ksi¹⁷	276 MPa	503 MPa	324 MPa	13 ksi	193 MPa	74 ksi	29 MPa	> 85 MPa	140 MPa	> 400 MPa	276 MPa	276 MPa	> 50 ksi	70 MPa	350 MPa	> 110 MPa	55 MPa	no data	no data	> 125 MPa	> 120 MPa	> 80 MPa	350 MPa	21 ksi	> 255 MPa	28000 psi	> 414 MPa	no data	no data	no data
Yield strength, table value, H14, sheet 0.064 in thick	17 ksi¹⁸	276 MPa	503 MPa	324 MPa	13 ksi	193 MPa	74 ksi	29 MPa	> 85 MPa	140 MPa	> 400 MPa	276 MPa	276 MPa	> 50 ksi	70 MPa	350 MPa	> 110 MPa	55 MPa	no data	no data	> 125 MPa	> 120 MPa	> 80 MPa	350 MPa	21 ksi	> 255 MPa	28000 psi	> 414 MPa	no data	no data	no data
Yield strength, table value, H16, sheet 0.064 in thick	21 ksi¹⁹	276 MPa	503 MPa	324 MPa	13 ksi	193 MPa	74 ksi	29 MPa	> 85 MPa	140 MPa	> 400 MPa	276 MPa	276 MPa	> 50 ksi	70 MPa	350 MPa	> 110 MPa	55 MPa	no data	no data	> 125 MPa	> 120 MPa	> 80 MPa	350 MPa	21 ksi	> 255 MPa	28000 psi	> 414 MPa	no data	no data	no data
Yield strength, table value, H18, sheet 0.064 in thick	24 ksi²⁰	276 MPa	503 MPa	324 MPa	13 ksi	193 MPa	74 ksi	29 MPa	> 85 MPa	140 MPa	> 400 MPa	276 MPa	276 MPa	> 50 ksi	70 MPa	350 MPa	> 110 MPa	55 MPa	no data	no data	> 125 MPa	> 120 MPa	> 80 MPa	350 MPa	21 ksi	> 255 MPa	28000 psi	> 414 MPa	no data	no data	no data
Elongation at break, table value, O, sheet 0.064 in thick	25 %²¹	17 %	11 %	19 %	25 %	12 %	8 %	50 to 65 %	4 to 8 %	16 %	> 6 %	18 %	18 %	> 6 %	12 %	> 5 %	> 8 %	12 %	> 2 %	20 %	> 12 %	4 to 12 %	> 12 %	4 %	8 %	> 9 %	> 8 %	> 7 %	> 1 %	no data	no data
Elongation at break, table value, H12, sheet 0.064 in thick	6 %²²	17 %	11 %	19 %	25 %	12 %	8 %	50 to 65 %	4 to 8 %	16 %	> 6 %	18 %	18 %	> 6 %	12 %	> 5 %	> 8 %	12 %	> 2 %	20 %	> 12 %	4 to 12 %	> 12 %	4 %	8 %	> 9 %	> 8 %	> 7 %	> 1 %	no data	no data
Elongation at break, table value, H14, sheet 0.064 in thick	5 %²³	17 %	11 %	19 %	25 %	12 %	8 %	50 to 65 %	4 to 8 %	16 %	> 6 %	18 %	18 %	> 6 %	12 %	> 5 %	> 8 %	12 %	> 2 %	20 %	> 12 %	4 to 12 %	> 12 %	4 %	8 %	> 9 %	> 8 %	> 7 %	> 1 %	no data	no data
Elongation at break, table value, H16, sheet 0.064 in thick	4 %²⁴	17 %	11 %	19 %	25 %	12 %	8 %	50 to 65 %	4 to 8 %	16 %	> 6 %	18 %	18 %	> 6 %	12 %	> 5 %	> 8 %	12 %	> 2 %	20 %	> 12 %	4 to 12 %	> 12 %	4 %	8 %	> 9 %	> 8 %	> 7 %	> 1 %	no data	no data
Elongation at break, table value, H18, sheet 0.064 in thick	4 %²⁵	17 %	11 %	19 %	25 %	12 %	8 %	50 to 65 %	4 to 8 %	16 %	> 6 %	18 %	18 %	> 6 %	12 %	> 5 %	> 8 %	12 %	> 2 %	20 %	> 12 %	4 to 12 %	> 12 %	4 %	8 %	> 9 %	> 8 %	> 7 %	> 1 %	no data	no data

Why choose it, and why not

Good for

Sheet and formed parts that need moderate strength, good workability and weldability, and atmospheric corrosion resistance, with the temper named.
Storage tanks and chemical equipment, listed by both Smiths and the aircraftmaterials page, and heat exchangers, listed by Smiths.
Light parts where O or H12 is needed for tight bends.

Watch out for

Strength depends on temper: tensile runs from 14 to 19 ksi in O to 27 ksi minimum in H18, so always name the temper.
The Smiths O-temper values (110 MPa tensile, 50 MPa proof stress) and the aircraftmaterials ksi table are different sources on the same temper, and both are datasheet values, not design allowables.
No design allowables, such as ASTM B 209 minimum strengths, were read, so the values here are not for design.
The sources disagree on minimum manganese (Smiths 1.10, aircraftmaterials 1.0) and on corrosion wording (very good against excellent). The file keeps each printed value and names its source.
No measured seawater corrosion rate or galvanic data for 3003 was found.
No H24 values were found in any source read, so H24 is not recorded.

3003 is a general-purpose manganese alloy whose strength is set by its temper, and two datasheets rate its atmospheric corrosion resistance very good or excellent. Name the temper on every order, bend within the minimum radius for that temper, and treat the corrosion wording as a datasheet claim until a measured rate is read.

Technical details

For scientists and researchers. Everything above comes from the record below: every number with its method, its conditions and its source.

Other names and standards

The same grade under other systems, as datasheets and standards print them. Each code was checked against the page it comes from.

Other names and standards
System	Codes
UNS	A93003
EN	3.0517
ASTM	B209 (sheet)
AMS	4006 (sheet), 4008 (sheet)
ISO	6361 (standard that covers 3003 and its tempers)

Notes

The method, full conditions and any caveat for the numbered rows above.

Notes for the numbered rows
#	Measurement	Method	Conditions	Caveat
1	Density, datasheet value, O	Value printed in the Smiths 3003 technical datasheet (2023) as g/cm³	temper Oproduct form sheet (Smiths lists 3003-0 sheet)temperature not statedbasis Smiths note under the table, 'The properties above are for material in the soft O condition'	—
2	Melting point, datasheet value, O	Value printed in the Smiths 3003 technical datasheet (2023)	temper Oproduct form sheet (Smiths lists 3003-0 sheet)temperature not statedbasis Smiths note under the table, the O condition	—
3	Coefficient of thermal expansion, datasheet value, O	Printed as 23.1x10-6 /K in the Smiths datasheet and written here as ppm/K, the same unit	temper Oproduct form sheet (Smiths lists 3003-0 sheet)temperature range not statedunit in source 23.1x10-6 /K as printed, which is 10^-6 per K, the same unit as ppm/Kbasis Smiths note under the table, the O condition	—
4	Modulus of elasticity, datasheet value, O	Value printed in the Smiths 3003 technical datasheet (2023)	temper Oproduct form sheet (Smiths lists 3003-0 sheet)temperature not statedbasis Smiths note under the table, the O condition	—
5	Thermal conductivity, datasheet value, O	Value printed in the Smiths 3003 technical datasheet (2023), with the unit as printed	temper Oproduct form sheet (Smiths lists 3003-0 sheet)temperature not statedbasis Smiths note under the table, the O condition	—
6	Tensile strength, datasheet value, O	Value printed in the Smiths 3003 technical datasheet (2023)	temper Oproduct form sheet (Smiths lists 3003-0 sheet)temperature not statedbasis Smiths note under the table, the O condition	—
7	Elongation at break, datasheet value, O	Value printed in the Smiths 3003 technical datasheet (2023)	temper Oproduct form sheet (Smiths lists 3003-0 sheet)specimen A50 mm gauge, as printed (Elongation A50 mm)basis Smiths note under the table, the O condition	—
8	Proof stress, datasheet value, O (printed as Proof Stress)	Value printed as Proof Stress in the Smiths 3003 technical datasheet (2023); the 0.2 % offset is not printed, so the row is stored as a proof stress	temper Oproduct form sheet (Smiths lists 3003-0 sheet)offset not printed on the datasheetbasis Smiths note under the table, the O condition	—
9	Shear strength, datasheet value, O	Value printed in the Smiths 3003 technical datasheet (2023); shear_strength is not in property-canon.yaml (see gaps)	temper Oproduct form sheet (Smiths lists 3003-0 sheet)basis Smiths note under the table, the O condition	—
10	Hardness, Vickers, datasheet value, O	Value printed in the Smiths 3003 technical datasheet (2023); hardness_vickers is not in property-canon.yaml (see gaps)	temper Oproduct form sheet (Smiths lists 3003-0 sheet)basis Smiths note under the table, the O condition	—
11	Tensile strength, table value, O, sheet 0.064 in thick	Value printed as a range in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper O (printed as 3003-0)product form sheet, 0.064 in thick (as printed)temperature not statedbasis column headed Tensile Strength (ksi min); the printed range 14-19 is stored as value 14 and value_high 19	—
12	Tensile strength, table value, H12, sheet 0.064 in thick	Value printed as a range in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H12 (printed as 3003-H12)product form sheet, 0.064 in thick (as printed)temperature not statedbasis column headed Tensile Strength (ksi min); the printed range 17-23 is stored as value 17 and value_high 23	—
13	Tensile strength, table value, H14, sheet 0.064 in thick	Value printed as a range in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H14 (printed as 3003-H14)product form sheet, 0.064 in thick (as printed)temperature not statedbasis column headed Tensile Strength (ksi min); the printed range 20-26 is stored as value 20 and value_high 26	—
14	Tensile strength, table value, H16, sheet 0.064 in thick	Value printed as a range in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H16 (printed as 3003-H16)product form sheet, 0.064 in thick (as printed)temperature not statedbasis column headed Tensile Strength (ksi min); the printed range 24-30 is stored as value 24 and value_high 30	—
15	Tensile strength, table value, H18, sheet 0.064 in thick	Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H18 (printed as 3003-H18)product form sheet, 0.064 in thick (as printed)temperature not statedbasis column headed Tensile Strength (ksi min); the page prints 27 min for H18	—
16	Yield strength, table value, O, sheet 0.064 in thick	Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper O (printed as 3003-0)product form sheet, 0.064 in thick (as printed)temperature not statedbasis column headed Yield Strength (ksi min); the page prints 5 for O	—
17	Yield strength, table value, H12, sheet 0.064 in thick	Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H12 (printed as 3003-H12)product form sheet, 0.064 in thick (as printed)temperature not statedbasis column headed Yield Strength (ksi min); the page prints 12 for H12	—
18	Yield strength, table value, H14, sheet 0.064 in thick	Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H14 (printed as 3003-H14)product form sheet, 0.064 in thick (as printed)temperature not statedbasis column headed Yield Strength (ksi min); the page prints 17 for H14	—
19	Yield strength, table value, H16, sheet 0.064 in thick	Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H16 (printed as 3003-H16)product form sheet, 0.064 in thick (as printed)temperature not statedbasis column headed Yield Strength (ksi min); the page prints 21 for H16	—
20	Yield strength, table value, H18, sheet 0.064 in thick	Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H18 (printed as 3003-H18)product form sheet, 0.064 in thick (as printed)temperature not statedbasis column headed Yield Strength (ksi min); the page prints 24 for H18	—
21	Elongation at break, table value, O, sheet 0.064 in thick	Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper O (printed as 3003-0)product form sheet, 0.064 in thick (as printed)specimen elongation in 2 in, as printed (Elongation % in 2 in)basis column headed Elongation % in 2 in 0.064 Sheet	—
22	Elongation at break, table value, H12, sheet 0.064 in thick	Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H12 (printed as 3003-H12)product form sheet, 0.064 in thick (as printed)specimen elongation in 2 in, as printed (Elongation % in 2 in)basis column headed Elongation % in 2 in 0.064 Sheet	—
23	Elongation at break, table value, H14, sheet 0.064 in thick	Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H14 (printed as 3003-H14)product form sheet, 0.064 in thick (as printed)specimen elongation in 2 in, as printed (Elongation % in 2 in)basis column headed Elongation % in 2 in 0.064 Sheet	—
24	Elongation at break, table value, H16, sheet 0.064 in thick	Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H16 (printed as 3003-H16)product form sheet, 0.064 in thick (as printed)specimen elongation in 2 in, as printed (Elongation % in 2 in)basis column headed Elongation % in 2 in 0.064 Sheet	—
25	Elongation at break, table value, H18, sheet 0.064 in thick	Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties	temper H18 (printed as 3003-H18)product form sheet, 0.064 in thick (as printed)specimen elongation in 2 in, as printed (Elongation % in 2 in)basis column headed Elongation % in 2 in 0.064 Sheet	—

Corrosion and compatibility

What happens when it meets other materials and environments.

Corrosion and compatibility
Environment	Concern	What happens
Atmosphere, general (no exposure data)	low	Smiths rates 3003 very good for resistance to atmospheric corrosion.¹
Atmosphere, general (no exposure data)	low	The aircraftmaterials page rates 3003 excellent for corrosion resistance, as it does alloy 1100.²
Seawater (no 3003 rating printed)	not rated	No seawater rating for 3003 is printed in the sources read. The Smiths 5052 datasheet rates 5052 very good against seawater, which is a different alloy.³

Corrosion details
#	Environment	Details	Test conditions
1	Atmosphere, general (no exposure data)	The Smiths datasheet says 3003 has very good resistance to atmospheric corrosion, and its Corrosion Resistance box reads Very good. It gives no exposure time, pit depth or corrosion rate, and it is a datasheet rating rather than a test result.	temper not statedbasis manufacturer datasheet rating, not a test result
2	Atmosphere, general (no exposure data)	The page says that, as with alloy 1100, 3003 has excellent corrosion resistance and workability. It names no exposure environment, exposure time or rate. Its wording is stronger than the Smiths rating for the same alloy, and both are kept as printed.	temper not statedbasis distributor description, not a test result
3	Seawater (no 3003 rating printed)	The Smiths 3003 datasheet has no seawater line. The Smiths 5052 datasheet rates 5052 very good against seawater and marine atmospheres, but that is a rating for 5052, not for 3003, and no measured seawater rate for either alloy was read in this run.	basis no seawater rating for 3003 in the sources read

Risks and side effects

Hazards to people, what happens when a cell overheats, and how the material is handled and stored.

For people

No supplier safety data sheet for 3003 was read in this run. The element-level PubChem data for aluminium and manganese is in the hazards list, but no toxicity or dust data for the alloy was found.

What the sources cover: The datasheets describe strength, corrosion, workability and specifications, not health effects. Before cutting, grinding or welding, read the supplier safety data sheet for the exact product.
Not covered: Hazard classification of 3003 as supplied, and of dust or fume from machining or welding, was not found in a source opened in this run.

If it fails

The one failure route read in this run is loss of ductility in harder tempers. It comes from datasheet values, not from field or test failure records.

Bending harder tempers: The aircraftmaterials table gives 4 % elongation in H16 and H18 against 25 % in O, and a minimum 90-degree bend radius of 1 1/2 to 3 T for H18.

Handling and storage

Temper: Name the temper and the specification on every order, and check it on receipt. Smiths lists ASTM B 209 for sheet, and AMS 4006 and AMS 4008 for 3003-0 and H-14 sheet.
Bending: Choose the temper from the bend radius needed. O, H12 and H14 bend at 0 T, H16 needs 1/2 to 1 1/2 T and H18 needs 1 1/2 to 3 T.

Test details
The original wording and numbers from the sources, for readers who want them.

Failure risks

Failure risks
Failure	Trigger and consequence
Loss of ductility in harder tempersmoderate severity	Bending or forming H16 or H18 sheet to a tight radiusOn the aircraftmaterials page, elongation falls from 25 % in O to 4 % in H16 and H18 (0.064 in sheet), and the minimum 90-degree bend radius rises from 0 T in O to 1 1/2 to 3 T in H18.

Handling and storage

Name the temper and the specification on every order. Smiths lists ASTM B 209 for sheet, and AMS 4006 and AMS 4008 for 3003-0 and H-14 sheet.
Choose the temper from the bend radius you need. O, H12 and H14 sheet (0.064 in) form at a 0 T minimum 90-degree radius, H16 needs 1/2 to 1 1/2 T and H18 needs 1 1/2 to 3 T.
Read the supplier's safety data sheet before cutting, grinding or welding. The PubChem data are element-level only.
Smiths rates 3003 very good for weldability. No welding procedure, filler or joint data for 3003 was read in this run.

Mitigations

Form in O or H12 when the part needs tight bends. The datasheet gives a 0 T minimum bend for those tempers and for H14.
Use H16 or H18 only where the strength is needed and a wider bend radius is allowed, since the table gives 1/2 to 1 1/2 T and 1 1/2 to 3 T for them.

Supply and geography

How common the raw materials are and where they come from.

Aluminium (primary smelter production)

USGS: global resources of bauxite are estimated at 55 billion to 75 billion tons and are sufficient to meet world demand for aluminum metal well into the future.

Top producers (2025): China 60.8%, India 5.7%, Russia 5.3%, Canada 4.5%, United Arab Emirates 3.6%
Critical mineral lists: EU: listed
Recycling: USGS: aluminum recovered from purchased scrap in the United States was about 3.6 million tons in 2025, and old-scrap recovery equalled about 28% of apparent consumption. US net import reliance was 60% in 2025e.
Substitutes: USGS: copper can replace aluminum in electrical and heat-exchange applications; composites, steel, vinyl and wood can substitute for aluminum in construction.

Bauxite (aluminium ore)

USGS: bauxite resources are estimated to range from 55 billion to 75 billion tons. World bauxite reserves were 29,000,000 thousand t.

Top producers (2025): Guinea 34.1%, Australia 22%, China 19.8%, Brazil 7.5%, India 5.7%
Critical mineral lists: EU: listed
Recycling: USGS: none.
Substitutes: USGS: bauxite is the only raw material used in the production of alumina on a commercial scale in the United States. Clay is technically feasible but not currently economically competitive.

Alumina (aluminium oxide)

Top producers (2025): China 62%, Australia 11.3%, Brazil 7.3%, India 5.5%
Critical mineral lists: EU: not listed
Recycling: USGS: none.
Substitutes: USGS: alumina from clay and other materials is technically feasible but not currently economically competitive with bauxite-based alumina.

Manganese (ore, manganese content)

USGS: land-based manganese resources are large but irregularly distributed, and South Africa accounts for an estimated 70% of world resources. World reserves are 1,800,000 thousand t.

Top producers (2025): South Africa 38%, Gabon 25%, Ghana 10%, Australia 8%, Brazil 4%
Critical mineral lists: EU: listed
Recycling: USGS: manganese was recycled incidentally with ferrous and nonferrous scrap, but scrap recovery specifically for manganese was negligible. It is recovered with iron from steel slag.
Substitutes: USGS: manganese has no satisfactory substitute in its major applications.

Documents

Datasheets, safety data sheets, papers and standards you can open.

Documents
Document	Type	Year
3003 Aluminium Technical Datasheet (Smiths Metal Centres, UK)	datasheet	2023
Aluminium Alloy 3003 / 3003A Technical Data Sheet (AircraftMaterials UK)	datasheet
5052 Aluminium Technical Datasheet (Smiths Metal Centres, UK)	datasheet	2023
USGS Mineral Commodity Summaries 2026: Aluminum	report	2026
USGS Mineral Commodity Summaries 2026: Bauxite and Alumina	report	2026
USGS Mineral Commodity Summaries 2026: Manganese	report	2026
Critical raw materials (European Commission)	report
PubChem: Aluminum, CID 5359268, Safety and Hazards	database
PubChem: Manganese, CID 23930, Safety and Hazards	database

Full record

The complete spore, as stored. Free to reuse under CC-BY-4.0. Images keep the licence shown with each one.

Show the full YAML

spore: profile
id: aluminium-3003
spore_version: 0.2
family: aluminium-alloys
name: Aluminium alloy 3003
abbreviation: '3003'
role: general-purpose wrought alloy
category: metals
type: aluminium
summary: |
  3003 is a wrought aluminium-manganese alloy (UNS A93003, alternate designation 3.0517) with 1.0 to 1.5 wt% manganese and 0.05 to 0.20 wt% copper, aluminium as the balance. The Smiths datasheet says it is 20% stronger than 1100 and rates its corrosion resistance very good; the aircraftmaterials page rates it excellent. Strength depends on temper: the aircraftmaterials table gives 14 to 19 ksi tensile in O and 27 ksi minimum in H18, and Smiths gives 110 MPa tensile for the O condition.
best_for: Sheet and formed parts that need moderate strength, good workability and weldability, and resistance to atmospheric corrosion, such as storage tanks, chemical equipment and heat exchangers, with the temper named
weakest_at: Strength depends on temper, from 14 to 19 ksi tensile in O to 27 ksi minimum in H18, and no seawater rating or measured corrosion rate for 3003 was found in the sources read
identity:
  formula: 'Al-Mn-Cu wrought alloy (3003). Composition limits in wt%: Mn 1.0 to 1.5, Cu 0.05 to 0.20, Fe max 0.70, Si max 0.60, Zn max 0.10, Mg max 0.05, each other element max 0.05 and total others max 0.15, Al remainder'
  source: smith3003
  where: Chemical Composition (weight %) table, Smiths 3003 datasheet. The aircraftmaterials Chemical Composition Limits table and Wikipedia agree on Mn 1.0 to 1.5 and the other limits; Smiths alone prints a minimum of 1.10 and a maximum of 1.50 for Mn
  designations:
    - system: UNS
      code: A93003
      source: wiki3003
      where: Opening paragraph, alternate designations include 3.0517 and A93003
    - system: EN
      code: '3.0517'
      source: wiki3003
      where: Opening paragraph, alternate designations
    - system: ASTM
      code: B209
      note: sheet
      source: smith3003
      where: Related Material Specifications, 3003 - 0 Sheet and 3003 H-14 Sheet entries (printed as ASTM B 209)
    - system: AMS
      code: '4006'
      note: sheet
      source: smith3003
      where: Related Material Specifications, 3003 - 0 Sheet entry
    - system: AMS
      code: '4008'
      note: sheet
      source: smith3003
      where: Related Material Specifications, 3003 H-14 Sheet entry
    - system: ISO
      code: '6361'
      note: standard that covers 3003 and its tempers
      source: wiki3003
      where: Opening paragraph, ISO standard 6361
tags:
  environments: []
  stresses: []
  applications:
    - thermal-control
    - propulsion-and-tanks
    - structures
properties:
  - benchmark: density
    label: Density, datasheet value, O
    value: 2.73
    unit: g/cm3
    scope: material
    conditions:
      temper: O
      product_form: sheet (Smiths lists 3003-0 sheet)
      temperature: not stated
      basis: Smiths note under the table, 'The properties above are for material in the soft O condition'
    method: Value printed in the Smiths 3003 technical datasheet (2023) as g/cm³
    status: ground
    source: smith3003
    where: Physical Properties table, Density row
  - benchmark: melting_point
    label: Melting point, datasheet value, O
    value: 655
    unit: °C
    scope: material
    conditions:
      temper: O
      product_form: sheet (Smiths lists 3003-0 sheet)
      temperature: not stated
      basis: Smiths note under the table, the O condition
    method: Value printed in the Smiths 3003 technical datasheet (2023)
    status: ground
    source: smith3003
    where: Physical Properties table, Melting Point row
  - benchmark: cte
    label: Coefficient of thermal expansion, datasheet value, O
    value: 23.1
    unit: ppm/K
    scope: material
    conditions:
      temper: O
      product_form: sheet (Smiths lists 3003-0 sheet)
      temperature_range: not stated
      unit_in_source: 23.1x10-6 /K as printed, which is 10^-6 per K, the same unit as ppm/K
      basis: Smiths note under the table, the O condition
    method: Printed as 23.1x10-6 /K in the Smiths datasheet and written here as ppm/K, the same unit
    status: ground
    source: smith3003
    where: Physical Properties table, Thermal Expansion row
  - benchmark: elastic_modulus
    label: Modulus of elasticity, datasheet value, O
    value: 69.5
    unit: GPa
    scope: material
    conditions:
      temper: O
      product_form: sheet (Smiths lists 3003-0 sheet)
      temperature: not stated
      basis: Smiths note under the table, the O condition
    method: Value printed in the Smiths 3003 technical datasheet (2023)
    status: ground
    source: smith3003
    where: Physical Properties table, Modulus of Elasticity row
  - benchmark: thermal_conductivity
    label: Thermal conductivity, datasheet value, O
    value: 190
    unit: W/m.K
    scope: material
    conditions:
      temper: O
      product_form: sheet (Smiths lists 3003-0 sheet)
      temperature: not stated
      basis: Smiths note under the table, the O condition
    method: Value printed in the Smiths 3003 technical datasheet (2023), with the unit as printed
    status: ground
    source: smith3003
    where: Physical Properties table, Thermal Conductivity row
  - benchmark: ultimate_tensile_strength
    label: Tensile strength, datasheet value, O
    value: 110
    unit: MPa
    scope: material
    conditions:
      temper: O
      product_form: sheet (Smiths lists 3003-0 sheet)
      temperature: not stated
      basis: Smiths note under the table, the O condition
    method: Value printed in the Smiths 3003 technical datasheet (2023)
    status: ground
    source: smith3003
    where: Mechanical Properties table, Tensile Strength row
  - benchmark: elongation
    label: Elongation at break, datasheet value, O
    value: 25
    unit: '%'
    scope: material
    conditions:
      temper: O
      product_form: sheet (Smiths lists 3003-0 sheet)
      specimen: A50 mm gauge, as printed (Elongation A50 mm)
      basis: Smiths note under the table, the O condition
    method: Value printed in the Smiths 3003 technical datasheet (2023)
    status: ground
    source: smith3003
    where: Mechanical Properties table, Elongation A50 mm row
  - benchmark: yield_strength
    label: Proof stress, datasheet value, O (printed as Proof Stress)
    value: 50
    unit: MPa
    scope: material
    conditions:
      temper: O
      product_form: sheet (Smiths lists 3003-0 sheet)
      offset: not printed on the datasheet
      basis: Smiths note under the table, the O condition
    method: Value printed as Proof Stress in the Smiths 3003 technical datasheet (2023); the 0.2 % offset is not printed, so the row is stored as a proof stress
    status: ground
    source: smith3003
    where: Mechanical Properties table, Proof Stress row
  - benchmark: shear_strength
    label: Shear strength, datasheet value, O
    value: 75
    unit: MPa
    scope: material
    conditions:
      temper: O
      product_form: sheet (Smiths lists 3003-0 sheet)
      basis: Smiths note under the table, the O condition
    method: Value printed in the Smiths 3003 technical datasheet (2023); shear_strength is not in property-canon.yaml (see gaps)
    status: ground
    source: smith3003
    where: Mechanical Properties table, Shear Strength row
  - benchmark: hardness_vickers
    label: Hardness, Vickers, datasheet value, O
    value: 29
    unit: HV
    scope: material
    conditions:
      temper: O
      product_form: sheet (Smiths lists 3003-0 sheet)
      basis: Smiths note under the table, the O condition
    method: Value printed in the Smiths 3003 technical datasheet (2023); hardness_vickers is not in property-canon.yaml (see gaps)
    status: ground
    source: smith3003
    where: Mechanical Properties table, Hardness Vickers row
  - benchmark: ultimate_tensile_strength
    label: Tensile strength, table value, O, sheet 0.064 in thick
    value: 14
    value_high: 19
    unit: ksi
    scope: material
    conditions:
      temper: O (printed as 3003-0)
      product_form: sheet, 0.064 in thick (as printed)
      temperature: not stated
      basis: column headed Tensile Strength (ksi min); the printed range 14-19 is stored as value 14 and value_high 19
    method: Value printed as a range in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row Alloy 3003-0 Sheet 0.064 in thick
  - benchmark: ultimate_tensile_strength
    label: Tensile strength, table value, H12, sheet 0.064 in thick
    value: 17
    value_high: 23
    unit: ksi
    scope: material
    conditions:
      temper: H12 (printed as 3003-H12)
      product_form: sheet, 0.064 in thick (as printed)
      temperature: not stated
      basis: column headed Tensile Strength (ksi min); the printed range 17-23 is stored as value 17 and value_high 23
    method: Value printed as a range in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row Alloy 3003-H12 Sheet 0.064 in thick
  - benchmark: ultimate_tensile_strength
    label: Tensile strength, table value, H14, sheet 0.064 in thick
    value: 20
    value_high: 26
    unit: ksi
    scope: material
    conditions:
      temper: H14 (printed as 3003-H14)
      product_form: sheet, 0.064 in thick (as printed)
      temperature: not stated
      basis: column headed Tensile Strength (ksi min); the printed range 20-26 is stored as value 20 and value_high 26
    method: Value printed as a range in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row Alloy 3003-H14 Sheet 0.064 in thick
  - benchmark: ultimate_tensile_strength
    label: Tensile strength, table value, H16, sheet 0.064 in thick
    value: 24
    value_high: 30
    unit: ksi
    scope: material
    conditions:
      temper: H16 (printed as 3003-H16)
      product_form: sheet, 0.064 in thick (as printed)
      temperature: not stated
      basis: column headed Tensile Strength (ksi min); the printed range 24-30 is stored as value 24 and value_high 30
    method: Value printed as a range in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row 3003-H16 Sheet 0.064 in thick
  - benchmark: ultimate_tensile_strength
    label: Tensile strength, table value, H18, sheet 0.064 in thick
    value: 27
    unit: ksi
    scope: material
    conditions:
      temper: H18 (printed as 3003-H18)
      product_form: sheet, 0.064 in thick (as printed)
      temperature: not stated
      basis: column headed Tensile Strength (ksi min); the page prints 27 min for H18
    method: Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row 3003- Sheet 0.064 in thick, H18 (27 min)
  - benchmark: yield_strength
    label: Yield strength, table value, O, sheet 0.064 in thick
    value: 5
    unit: ksi
    scope: material
    conditions:
      temper: O (printed as 3003-0)
      product_form: sheet, 0.064 in thick (as printed)
      temperature: not stated
      basis: column headed Yield Strength (ksi min); the page prints 5 for O
    method: Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row Alloy 3003-0 Sheet 0.064 in thick
  - benchmark: yield_strength
    label: Yield strength, table value, H12, sheet 0.064 in thick
    value: 12
    unit: ksi
    scope: material
    conditions:
      temper: H12 (printed as 3003-H12)
      product_form: sheet, 0.064 in thick (as printed)
      temperature: not stated
      basis: column headed Yield Strength (ksi min); the page prints 12 for H12
    method: Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row Alloy 3003-H12 Sheet 0.064 in thick
  - benchmark: yield_strength
    label: Yield strength, table value, H14, sheet 0.064 in thick
    value: 17
    unit: ksi
    scope: material
    conditions:
      temper: H14 (printed as 3003-H14)
      product_form: sheet, 0.064 in thick (as printed)
      temperature: not stated
      basis: column headed Yield Strength (ksi min); the page prints 17 for H14
    method: Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row Alloy 3003-H14 Sheet 0.064 in thick
  - benchmark: yield_strength
    label: Yield strength, table value, H16, sheet 0.064 in thick
    value: 21
    unit: ksi
    scope: material
    conditions:
      temper: H16 (printed as 3003-H16)
      product_form: sheet, 0.064 in thick (as printed)
      temperature: not stated
      basis: column headed Yield Strength (ksi min); the page prints 21 for H16
    method: Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row 3003-H16 Sheet 0.064 in thick
  - benchmark: yield_strength
    label: Yield strength, table value, H18, sheet 0.064 in thick
    value: 24
    unit: ksi
    scope: material
    conditions:
      temper: H18 (printed as 3003-H18)
      product_form: sheet, 0.064 in thick (as printed)
      temperature: not stated
      basis: column headed Yield Strength (ksi min); the page prints 24 for H18
    method: Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row 3003- Sheet 0.064 in thick, H18
  - benchmark: elongation
    label: Elongation at break, table value, O, sheet 0.064 in thick
    value: 25
    unit: '%'
    scope: material
    conditions:
      temper: O (printed as 3003-0)
      product_form: sheet, 0.064 in thick (as printed)
      specimen: elongation in 2 in, as printed (Elongation % in 2 in)
      basis: column headed Elongation % in 2 in 0.064 Sheet
    method: Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row Alloy 3003-0 Sheet 0.064 in thick
  - benchmark: elongation
    label: Elongation at break, table value, H12, sheet 0.064 in thick
    value: 6
    unit: '%'
    scope: material
    conditions:
      temper: H12 (printed as 3003-H12)
      product_form: sheet, 0.064 in thick (as printed)
      specimen: elongation in 2 in, as printed (Elongation % in 2 in)
      basis: column headed Elongation % in 2 in 0.064 Sheet
    method: Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row Alloy 3003-H12 Sheet 0.064 in thick
  - benchmark: elongation
    label: Elongation at break, table value, H14, sheet 0.064 in thick
    value: 5
    unit: '%'
    scope: material
    conditions:
      temper: H14 (printed as 3003-H14)
      product_form: sheet, 0.064 in thick (as printed)
      specimen: elongation in 2 in, as printed (Elongation % in 2 in)
      basis: column headed Elongation % in 2 in 0.064 Sheet
    method: Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row Alloy 3003-H14 Sheet 0.064 in thick
  - benchmark: elongation
    label: Elongation at break, table value, H16, sheet 0.064 in thick
    value: 4
    unit: '%'
    scope: material
    conditions:
      temper: H16 (printed as 3003-H16)
      product_form: sheet, 0.064 in thick (as printed)
      specimen: elongation in 2 in, as printed (Elongation % in 2 in)
      basis: column headed Elongation % in 2 in 0.064 Sheet
    method: Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row 3003-H16 Sheet 0.064 in thick
  - benchmark: elongation
    label: Elongation at break, table value, H18, sheet 0.064 in thick
    value: 4
    unit: '%'
    scope: material
    conditions:
      temper: H18 (printed as 3003-H18)
      product_form: sheet, 0.064 in thick (as printed)
      specimen: elongation in 2 in, as printed (Elongation % in 2 in)
      basis: column headed Elongation % in 2 in 0.064 Sheet
    method: Value printed in the aircraftmaterials 3003 technical data sheet, table titled Typical Mechanical Properties
    status: ground
    source: aircraft-3003-sheet
    where: Typical Mechanical Properties table, row 3003- Sheet 0.064 in thick, H18
corrosion:
  - environment: Atmosphere, general (no exposure data)
    headline: Smiths rates 3003 very good for resistance to atmospheric corrosion.
    effect: The Smiths datasheet says 3003 has very good resistance to atmospheric corrosion, and its Corrosion Resistance box reads Very good. It gives no exposure time, pit depth or corrosion rate, and it is a datasheet rating rather than a test result.
    rating: low
    conditions:
      temper: not stated
      basis: manufacturer datasheet rating, not a test result
    source: smith3003
    where: Product Description paragraph and Corrosion Resistance box
  - environment: Atmosphere, general (no exposure data)
    headline: The aircraftmaterials page rates 3003 excellent for corrosion resistance, as it does alloy 1100.
    effect: The page says that, as with alloy 1100, 3003 has excellent corrosion resistance and workability. It names no exposure environment, exposure time or rate. Its wording is stronger than the Smiths rating for the same alloy, and both are kept as printed.
    rating: low
    conditions:
      temper: not stated
      basis: distributor description, not a test result
    source: aircraft-3003-sheet
    where: Product description paragraph
  - environment: Seawater (no 3003 rating printed)
    headline: No seawater rating for 3003 is printed in the sources read. The Smiths 5052 datasheet rates 5052 very good against seawater, which is a different alloy.
    effect: The Smiths 3003 datasheet has no seawater line. The Smiths 5052 datasheet rates 5052 very good against seawater and marine atmospheres, but that is a rating for 5052, not for 3003, and no measured seawater rate for either alloy was read in this run.
    rating: unknown
    conditions:
      basis: no seawater rating for 3003 in the sources read
    source: smith3003
    where: Key features and Corrosion Resistance box (no seawater line)
risks:
  hazards:
    - text: PubChem's aggregated GHS reports for aluminum metal (4,079 company reports) give H250 in 34.2% of reports (catches fire spontaneously if exposed to air), H261 in 90.8% (in contact with water releases flammable gas) and H228 in 60.6% (flammable solid). 8.3% of reports say it does not meet GHS criteria. These are element-level statements, not a classification of 3003 as supplied.
      ghs:
        - H250
        - H261
        - H228
      source: pubchem-al
      where: Safety and Hazards, GHS Classification (CID 5359268)
    - text: PubChem's aggregated GHS reports for manganese (3,101 company reports) give H319 in 14.8% of reports (causes serious eye irritation), H228 in 11.6% (flammable solid), H411 in 10.9% and H412 in 10.8% (aquatic hazards). 46.1% of reports say it does not meet GHS criteria. Single notifications on the same page also list H360 (may damage fertility or the unborn child), H370 and H372 (damage to organs). These are element-level statements, not a classification of 3003.
      ghs:
        - H319
        - H228
        - H411
        - H412
      source: pubchem-mn
      where: Safety and Hazards, GHS Classification (CID 23930)
  failure_risks:
    - mode: Loss of ductility in harder tempers
      trigger: Bending or forming H16 or H18 sheet to a tight radius
      consequence: On the aircraftmaterials page, elongation falls from 25 % in O to 4 % in H16 and H18 (0.064 in sheet), and the minimum 90-degree bend radius rises from 0 T in O to 1 1/2 to 3 T in H18.
      severity: moderate
      source: aircraft-3003-sheet
      where: Typical Mechanical Properties table, Elongation and Min 90 degree Cold Bend Radius columns
  side_effects: []
  handling:
    - text: Name the temper and the specification on every order. Smiths lists ASTM B 209 for sheet, and AMS 4006 and AMS 4008 for 3003-0 and H-14 sheet.
      source: smith3003
      where: Related Material Specifications
    - text: Choose the temper from the bend radius you need. O, H12 and H14 sheet (0.064 in) form at a 0 T minimum 90-degree radius, H16 needs 1/2 to 1 1/2 T and H18 needs 1 1/2 to 3 T.
      source: aircraft-3003-sheet
      where: Min 90 degree Cold Bend Radius column
    - text: Read the supplier's safety data sheet before cutting, grinding or welding. The PubChem data are element-level only.
      source: pubchem-al
      where: Safety and Hazards, GHS Classification
    - text: Smiths rates 3003 very good for weldability. No welding procedure, filler or joint data for 3003 was read in this run.
      source: smith3003
      where: Key features and Weldability box
  mitigations:
    - text: Form in O or H12 when the part needs tight bends. The datasheet gives a 0 T minimum bend for those tempers and for H14.
      source: aircraft-3003-sheet
      where: Min 90 degree Cold Bend Radius column
    - text: Use H16 or H18 only where the strength is needed and a wider bend radius is allowed, since the table gives 1/2 to 1 1/2 T and 1 1/2 to 3 T for them.
      source: aircraft-3003-sheet
      where: Min 90 degree Cold Bend Radius column
uses:
  - application: thermal-control
    device: Heat exchangers
    example: The Smiths datasheet lists heat exchangers among the typical applications of 3003.
    source: smith3003
    where: Applications list
  - application: propulsion-and-tanks
    device: Storage tanks and chemical equipment
    example: Smiths and the aircraftmaterials page both list storage tanks and chemical equipment among typical 3003 uses.
    source: smith3003
    where: Applications list
  - application: structures
    device: Decorative trim
    example: The aircraftmaterials page lists decorative trim among the uses of alloy 3003, alongside chemical equipment, cooking equipment and storage tanks.
    source: aircraft-3003-sheet
    where: Product description paragraph
supply:
  - subject: Aluminium (primary smelter production)
    producers:
      - country: China
        share_percent: 60.8
        year: 2025
      - country: India
        share_percent: 5.7
        year: 2025
      - country: Russia
        share_percent: 5.3
        year: 2025
      - country: Canada
        share_percent: 4.5
        year: 2025
      - country: United Arab Emirates
        share_percent: 3.6
        year: 2025
    critical_lists:
      - list: EU critical raw materials list, 2023 (aluminium and bauxite merged, per the Commission page)
        listed: true
    recycling: 'USGS: aluminum recovered from purchased scrap in the United States was about 3.6 million tons in 2025, and old-scrap recovery equalled about 28% of apparent consumption. US net import reliance was 60% in 2025e.'
    substitutes:
      - 'USGS: copper can replace aluminum in electrical and heat-exchange applications; composites, steel, vinyl and wood can substitute for aluminum in construction.'
    abundance: 'USGS: global resources of bauxite are estimated at 55 billion to 75 billion tons and are sufficient to meet world demand for aluminum metal well into the future.'
    source: usgs-mcs2026-aluminum
    where: World Smelter Production and Capacity table, 2025e (world total 74,000 thousand t; shares calculated from the printed tonnages of 45,000, 4,200, 3,900, 3,300 and 2,700); Recycling; Substitutes; World Resources; Salient Statistics
  - subject: Bauxite (aluminium ore)
    abundance: 'USGS: bauxite resources are estimated to range from 55 billion to 75 billion tons. World bauxite reserves were 29,000,000 thousand t.'
    producers:
      - country: Guinea
        share_percent: 34.1
        year: 2025
      - country: Australia
        share_percent: 22
        year: 2025
      - country: China
        share_percent: 19.8
        year: 2025
      - country: Brazil
        share_percent: 7.5
        year: 2025
      - country: India
        share_percent: 5.7
        year: 2025
    critical_lists:
      - list: EU critical raw materials list, 2023 (bauxite listed, merged with aluminium)
        listed: true
    recycling: 'USGS: none.'
    substitutes:
      - 'USGS: bauxite is the only raw material used in the production of alumina on a commercial scale in the United States. Clay is technically feasible but not currently economically competitive.'
    source: usgs-mcs2026-bauxite-alumina
    where: World Alumina Refinery and Bauxite Mine Production table, bauxite 2025e (world total 440,000 thousand t; shares calculated from the printed tonnages); Recycling; Substitutes; Salient Statistics (US net import reliance above 75% in 2025e)
  - subject: Alumina (aluminium oxide)
    producers:
      - country: China
        share_percent: 62
        year: 2025
      - country: Australia
        share_percent: 11.3
        year: 2025
      - country: Brazil
        share_percent: 7.3
        year: 2025
      - country: India
        share_percent: 5.5
        year: 2025
    critical_lists:
      - list: EU critical raw materials list, 2023 (alumina is not listed separately)
        listed: false
    recycling: 'USGS: none.'
    substitutes:
      - 'USGS: alumina from clay and other materials is technically feasible but not currently economically competitive with bauxite-based alumina.'
    source: usgs-mcs2026-bauxite-alumina
    where: World Alumina Refinery and Bauxite Mine Production table, alumina 2025e (world total 150,000 thousand t; shares calculated from the printed tonnages); Import Sources, 2021 to 2024 (Brazil 71%); Salient Statistics (US net import reliance 71% in 2025e)
  - subject: Manganese (ore, manganese content)
    abundance: 'USGS: land-based manganese resources are large but irregularly distributed, and South Africa accounts for an estimated 70% of world resources. World reserves are 1,800,000 thousand t.'
    producers:
      - country: South Africa
        share_percent: 38
        year: 2025
      - country: Gabon
        share_percent: 25
        year: 2025
      - country: Ghana
        share_percent: 10
        year: 2025
      - country: Australia
        share_percent: 8
        year: 2025
      - country: Brazil
        share_percent: 4
        year: 2025
    critical_lists:
      - list: EU critical raw materials list, 2023 (manganese listed)
        listed: true
    recycling: 'USGS: manganese was recycled incidentally with ferrous and nonferrous scrap, but scrap recovery specifically for manganese was negligible. It is recovered with iron from steel slag.'
    substitutes:
      - 'USGS: manganese has no satisfactory substitute in its major applications.'
    source: usgs-mcs2026-manganese
    where: World Mine Production (manganese content) and Reserves table, 2025e (world total 20,000 thousand t; shares calculated from the printed tonnages); Salient Statistics (US net import reliance 100% in 2025e); US mine production none
media: []
documents:
  - title: 3003 Aluminium Technical Datasheet (Smiths Metal Centres, UK)
    type: datasheet
    url: https://www.smithmetal.com/pdf/aluminium/3xxx/3003.pdf
    year: 2023
  - title: Aluminium Alloy 3003 / 3003A Technical Data Sheet (AircraftMaterials UK)
    type: datasheet
    url: https://www.aircraftmaterials.com/data/aluminium/3003.html
  - title: 5052 Aluminium Technical Datasheet (Smiths Metal Centres, UK)
    type: datasheet
    url: https://www.smithmetal.com/pdf/aluminium/5xxx/5052.pdf
    year: 2023
  - title: 'USGS Mineral Commodity Summaries 2026: Aluminum'
    type: report
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-aluminum.pdf
    year: 2026
  - title: 'USGS Mineral Commodity Summaries 2026: Bauxite and Alumina'
    type: report
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-bauxite-alumina.pdf
    year: 2026
  - title: 'USGS Mineral Commodity Summaries 2026: Manganese'
    type: report
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-manganese.pdf
    year: 2026
  - title: Critical raw materials (European Commission)
    type: report
    url: https://single-market-economy.ec.europa.eu/sectors/raw-materials/areas-specific-interest/critical-raw-materials_en
  - title: 'PubChem: Aluminum, CID 5359268, Safety and Hazards'
    type: database
    url: https://pubchem.ncbi.nlm.nih.gov/compound/5359268
  - title: 'PubChem: Manganese, CID 23930, Safety and Hazards'
    type: database
    url: https://pubchem.ncbi.nlm.nih.gov/compound/23930
gaps:
  - 'H24: no source read prints H24. The aircraftmaterials table covers O, H12, H14, H16 and H18, and Smiths covers O only, so H24 is not recorded.'
  - EN AW-3003 and AlMn1Cu (the EN chemical-name form) are not printed on any page read in this run, so they are not listed as designations. The Wikipedia page gives only 3.0517 and A93003.
  - UNS A93003 and the 3.0517 numeral are printed only on the Wikipedia page, which cites MakeItFrom. MakeItFrom returned a bot challenge and could not be read, and no manufacturer page read here prints either code.
  - 'Not found in any source read: specific heat, electrical resistivity or conductivity, Poisson ratio, shear modulus, fatigue strength, and any thermal or elastic value for the H tempers.'
  - 'Melting: only one value, 655 °C from Smiths. No solidus and liquidus range was read.'
  - Proof stress (Smiths, O, 50 MPa) is stored as yield_strength, and its 0.2 % offset is not printed. The aircraftmaterials yield for O (5 ksi min) is kept as a separate row.
  - 'Non-canonical names: shear_strength (Smiths, 75 MPa, O) and hardness_vickers (Smiths, 29 HV, O) are not in property-canon.yaml. Short names are used, and the import will need canon entries for them.'
  - Smiths values are for the O condition only, by its own note. No thermal, elastic or density value for H12 to H18 was found.
  - 'Composition: Smiths prints a minimum of 1.10 wt% Mn, while the aircraftmaterials page and Wikipedia give 1.0. The file uses 1.0 to 1.5 and records the Smiths minimum in the Mn share_note.'
  - 'Corrosion: no measured rate, pit depth, exposure time or salt-spray result for 3003 was read. The ratings are very good (Smiths) and excellent (aircraftmaterials), with no environment named.'
  - No seawater rating for 3003 is printed in any source read. The Smiths 5052 rating is for another alloy and is not used as a 3003 value.
  - No supplier safety data sheet for 3003 was read. Hazards are PubChem element-level data for aluminium and manganese, and dust or fume from machining or welding is not recorded.
  - 'Failure: no test or field failure record for 3003 was read. The only failure route recorded is ductility loss in harder tempers, from the aircraftmaterials table.'
  - 'Welding: only the Smiths rating (very good) is recorded. No filler, heat-affected-zone or joint-efficiency data was read.'
  - 'Standards: ASTM B 209 minimum strengths, the AMS 4006 and AMS 4008 limits, and ISO 6361 were not opened, so no design minimums are recorded. QQ-A-250/2, printed on both datasheets, is not listed because the designation list has no system for it.'
  - 'Critical lists: the EU 2023 list is read. The USGS 2025 critical minerals list was not checked in this run.'
  - Shares for aluminium, bauxite, alumina and manganese are calculated from the printed USGS tonnages, not printed as percentages.
  - 'Formability: the minimum bend radius is stored as text in story.can_do, because the page prints fractions of thickness (1/2, 1 1/2, 3 T) that a numeric value field cannot hold exactly.'
  - The aircraftmaterials table headings say ksi min, but the page prints ranges for O, H12, H14 and H16. The file stores them as printed and does not decide the basis.
  - The aircraftmaterials page title also names 3003A. That is a separate grade, and no code was taken from it.
  - Smiths 5052 values are for the H32 condition. They are used only in the comparison text, not as 3003 values.
  - 'Source type: all 3003 strength and physical values come from two distributor datasheets (Smiths and AircraftMaterials). No mill or manufacturer datasheet for 3003 was reached in this run.'
  - No images or diagrams were added.
sources:
  smith3003:
    title: 3003 Aluminium Technical Datasheet (Smiths Metal Centres, UK)
    id: Smiths Metal Centres data sheet, copyright 2023
    url: https://www.smithmetal.com/pdf/aluminium/3xxx/3003.pdf
    year: 2023
    kind: datasheet
    license: distributor datasheet (cited, not reproduced)
  aircraft-3003-sheet:
    title: Aluminium Alloy 3003 / 3003A Technical Data Sheet (AircraftMaterials UK)
    id: AircraftMaterials UK technical data sheet page for alloy 3003 (3003A is a separate grade and is not used)
    url: https://www.aircraftmaterials.com/data/aluminium/3003.html
    kind: datasheet
    license: distributor web page (cited, not reproduced)
  smith5052:
    title: 5052 Aluminium Technical Datasheet (Smiths Metal Centres, UK)
    id: Smiths Metal Centres data sheet, copyright 2023; values are for H32 and are used here for the comparison text only
    url: https://www.smithmetal.com/pdf/aluminium/5xxx/5052.pdf
    year: 2023
    kind: datasheet
    license: distributor datasheet (cited, not reproduced)
  wiki3003:
    title: 3003 aluminium alloy (Wikipedia), used for designations and composition cross-check only
    url: https://en.wikipedia.org/wiki/3003_aluminium_alloy
    kind: web
    license: CC BY-SA 4.0 (cited, not reproduced)
  usgs-mcs2026-aluminum:
    title: Mineral Commodity Summaries 2026, Aluminum
    id: USGS MCS 2026, February 2026
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-aluminum.pdf
    year: 2026
    kind: report
    license: public domain (USGS)
  usgs-mcs2026-bauxite-alumina:
    title: Mineral Commodity Summaries 2026, Bauxite and Alumina
    id: USGS MCS 2026, February 2026
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-bauxite-alumina.pdf
    year: 2026
    kind: report
    license: public domain (USGS)
  usgs-mcs2026-manganese:
    title: Mineral Commodity Summaries 2026, Manganese
    id: USGS MCS 2026, February 2026
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-manganese.pdf
    year: 2026
    kind: report
    license: public domain (USGS)
  ec-crm-list:
    title: Critical raw materials (European Commission, fifth list 2023)
    id: European Commission critical raw materials page
    url: https://single-market-economy.ec.europa.eu/sectors/raw-materials/areas-specific-interest/critical-raw-materials_en
    kind: web
    license: European Commission web page
  pubchem-al:
    title: 'Aluminum, PubChem compound CID 5359268: Safety and Hazards, GHS Classification'
    id: PubChem CID 5359268 (PUG View JSON, read 2026-10-24); aggregated from ECHA C&L notifications
    url: https://pubchem.ncbi.nlm.nih.gov/compound/5359268
    kind: database
    license: PubChem (NCBI) public data
  pubchem-mn:
    title: 'Manganese, PubChem compound CID 23930: Safety and Hazards, GHS Classification'
    id: PubChem CID 23930 (PUG View JSON, read 2026-10-24); aggregated from ECHA C&L notifications
    url: https://pubchem.ncbi.nlm.nih.gov/compound/23930
    kind: database
    license: PubChem (NCBI) public data
license: CC-BY-4.0
updated: '2026-10-24'
review:
  status: draft
  method: assistant
  checked_values: 25
  unreachable: 9
  caveats: 5
  note: 'Written 2026-10-24 by an AI assistant from pages fetched in this run. Smiths values are for the O condition, as its own note says. The aircraftmaterials table prints ksi ranges for O, H12, H14 and H16 under a min heading, and they are stored as printed. EN AW-3003 and AlMn1Cu are not printed on any page read, so they are not listed. Unreachable: MakeItFrom (bot challenge), MatWeb SpecificMaterial pages (Cloudflare challenge), MatWeb datasheet print (no text), ASM alloy data 06821G (no readable text), NIST Davis handbook and anodizing PDFs (no file returned), the Aluminium Matters page (host not resolved), eFunda and AZoM 2783 (not found).'
story:
  recipe:
    line: Wrought aluminium-manganese alloy with 1.0 to 1.5 wt% manganese and 0.05 to 0.20 wt% copper, iron and silicon held to 0.70 and 0.60 wt% maximum, and aluminium as the balance (Smiths and aircraftmaterials composition tables; Wikipedia agrees). Manganese is the main addition. The alloy is sold as sheet, plate, tube and foil (aircraftmaterials).
    parts:
      - name: Aluminium
        symbol: Al
        share_note: balance (Smiths Bal; aircraftmaterials Rem)
        role: Matrix of the alloy (the balance of the composition).
        source: smith3003
        where: Chemical Composition table, Al column
      - name: Manganese
        symbol: Mn
        share_percent: 1
        share_high: 1.5
        share_note: Smiths prints min 1.10 and max 1.50; aircraftmaterials prints 1.0 to 1.5
        role: Main alloying element. The aircraftmaterials page says manganese increases the strength, making 3003 20% stronger than alloy 1100.
        source: aircraft-3003-sheet
        where: Chemical Composition Limits table, Mn column
      - name: Copper
        symbol: Cu
        share_percent: 0.05
        share_high: 0.2
        role: Minor addition inside the composition limits.
        source: aircraft-3003-sheet
        where: Chemical Composition Limits table, Cu column
      - name: Iron
        symbol: Fe
        share_note: maximum 0.70
        role: Impurity, held to a maximum limit.
        source: smith3003
        where: Chemical Composition table, Fe max column
      - name: Silicon
        symbol: Si
        share_note: maximum 0.60
        role: Impurity, held to a maximum limit.
        source: smith3003
        where: Chemical Composition table, Si max column
      - name: Zinc
        symbol: Zn
        share_note: maximum 0.10
        role: Impurity, held to a maximum limit.
        source: smith3003
        where: Chemical Composition table, Zn max column
      - name: Magnesium
        symbol: Mg
        share_note: maximum 0.05, printed by Smiths only
        role: Impurity, held to a maximum limit.
        source: smith3003
        where: Chemical Composition table, Mg max column
  risk_groups:
    - title: For people
      lead: No supplier safety data sheet for 3003 was read in this run. The element-level PubChem data for aluminium and manganese is in the hazards list, but no toxicity or dust data for the alloy was found.
      gap: Hazard classification of 3003 as supplied, and of dust or fume from machining or welding, was not found in a source opened in this run.
      points:
        - label: What the sources cover
          line: The datasheets describe strength, corrosion, workability and specifications, not health effects. Before cutting, grinding or welding, read the supplier safety data sheet for the exact product.
    - title: If it fails
      lead: The one failure route read in this run is loss of ductility in harder tempers. It comes from datasheet values, not from field or test failure records.
      points:
        - label: Bending harder tempers
          line: The aircraftmaterials table gives 4 % elongation in H16 and H18 against 25 % in O, and a minimum 90-degree bend radius of 1 1/2 to 3 T for H18.
    - title: Handling and storage
      points:
        - label: Temper
          line: Name the temper and the specification on every order, and check it on receipt. Smiths lists ASTM B 209 for sheet, and AMS 4006 and AMS 4008 for 3003-0 and H-14 sheet.
        - label: Bending
          line: Choose the temper from the bend radius needed. O, H12 and H14 bend at 0 T, H16 needs 1/2 to 1 1/2 T and H18 needs 1 1/2 to 3 T.
  why: Aluminium alloy 3003 is a wrought alloy in the 3xxx (manganese) series. Manganese, at 1.0 to 1.5 wt%, is the main addition. The aircraftmaterials page says it makes 3003 20% stronger than alloy 1100, and that the alloy keeps the corrosion resistance and workability of commercially pure aluminium. The temper code (for example O, H14 or H18) records the cold work given, and this profile keeps each temper apart. Smiths lists storage tanks, chemical equipment, cooking and kitchen equipment and heat exchangers as its typical uses.
  uses:
    - where: Heat exchangers
      line: Smiths lists heat exchangers among typical applications.
    - where: Storage tanks and chemical equipment
      line: Smiths and the aircraftmaterials page both list these uses.
    - where: Cooking and kitchen equipment
      line: Smiths and the aircraftmaterials page both list cooking and kitchen equipment. This is a consumer use, not a space use.
  can_do:
    - label: Strength by temper
      value: 14 to 19 ksi (O) up to 27 ksi min (H18) tensile
      line: Tensile strength rises from 14 to 19 ksi in O, through 17 to 23 ksi in H12, 20 to 26 ksi in H14 and 24 to 30 ksi in H16, to 27 ksi minimum in H18 (aircraftmaterials, 0.064 in sheet, each temper kept separate).
    - label: Yield by temper
      value: 5 ksi (O) to 24 ksi (H18)
      line: The yield column gives 5 ksi in O, 12 ksi in H12, 17 ksi in H14, 21 ksi in H16 and 24 ksi in H18 (ksi min, as printed).
    - label: Elongation
      value: 25 % (O) to 4 % (H16, H18)
      line: Elongation in 2 in falls from 25 % in O to 6 % in H12, 5 % in H14 and 4 % in H16 and H18. Smiths gives 25 % in O on a 50 mm gauge.
    - label: Stiffness and weight
      value: 2.73 g/cm3 and 69.5 GPa (O)
      line: In the O condition, density is 2.73 g/cm3 and the modulus of elasticity is 69.5 GPa (Smiths).
    - label: Heat conduction
      value: 190 W/m.K (O)
      line: Thermal conductivity is 190 W/m.K in the O condition (Smiths).
    - label: Thermal expansion
      value: 23.1 ppm/K (O)
      line: Smiths prints 23.1x10-6 /K for the O condition, which is 23.1 ppm/K.
    - label: Melting point
      value: 655 °C
      line: Smiths gives a single melting point of 655 °C. A solidus and liquidus range is not printed.
    - label: Formability
      value: 0 T (O, H12, H14) to 1 1/2 to 3 T (H18) minimum 90-degree bend
      line: The minimum 90-degree cold bend radius for 0.064 in sheet is 0 T in O, H12 and H14, 1/2 to 1 1/2 T in H16 and 1 1/2 to 3 T in H18.
    - label: Corrosion resistance
      value: very good (Smiths) and excellent (aircraftmaterials)
      line: Smiths rates atmospheric corrosion resistance very good, and the aircraftmaterials page says excellent. Neither gives an environment, exposure time or rate.
    - label: Weldability
      value: very good (Smiths)
      line: The Smiths datasheet rates 3003 very good for weldability. No welding procedure or joint data was read.
  compare: Compared with 5052, the two datasheets read here point in different directions. The Smiths 5052 datasheet says that, when annealed, 5052 is stronger than 1100 and 3003, and it rates 5052 very good against seawater and marine atmospheres. The Smiths 3003 datasheet gives no seawater rating, only very good resistance to atmospheric corrosion. The two records use different tempers (O for 3003 here, H32 for 5052 in its Smiths table), so they do not give a like-for-like strength ranking, and this profile makes none. The main addition is manganese for 3003 and magnesium for 5052. On these sources 5052 has the printed seawater rating. See the aluminium-5052 profile for its own values.
  compare_rows:
    - label: Density
      benchmark: density
    - label: Thermal conductivity
      benchmark: thermal_conductivity
    - label: Thermal expansion
      benchmark: cte
  handling:
    - Name the temper and the specification on every order. Smiths lists ASTM B 209 for sheet, and AMS 4006 and AMS 4008 for 3003-0 and H-14 sheet.
    - Choose the temper from the bend radius you need. O, H12 and H14 form at 0 T, H16 needs 1/2 to 1 1/2 T and H18 needs 1 1/2 to 3 T (aircraftmaterials, 0.064 in sheet).
    - Read the supplier safety data sheet before cutting, grinding or welding. The PubChem data are element-level only.
    - Smiths rates the weldability very good. No welding procedure, filler or joint data for 3003 was read in this run.
  good_for:
    - Sheet and formed parts that need moderate strength, good workability and weldability, and atmospheric corrosion resistance, with the temper named.
    - Storage tanks and chemical equipment, listed by both Smiths and the aircraftmaterials page, and heat exchangers, listed by Smiths.
    - Light parts where O or H12 is needed for tight bends.
  watch_out:
    - 'Strength depends on temper: tensile runs from 14 to 19 ksi in O to 27 ksi minimum in H18, so always name the temper.'
    - The Smiths O-temper values (110 MPa tensile, 50 MPa proof stress) and the aircraftmaterials ksi table are different sources on the same temper, and both are datasheet values, not design allowables.
    - No design allowables, such as ASTM B 209 minimum strengths, were read, so the values here are not for design.
    - The sources disagree on minimum manganese (Smiths 1.10, aircraftmaterials 1.0) and on corrosion wording (very good against excellent). The file keeps each printed value and names its source.
    - No measured seawater corrosion rate or galvanic data for 3003 was found.
    - No H24 values were found in any source read, so H24 is not recorded.
  verdict: 3003 is a general-purpose manganese alloy whose strength is set by its temper, and two datasheets rate its atmospheric corrosion resistance very good or excellent. Name the temper on every order, bend within the minimum radius for that temper, and treat the corrosion wording as a datasheet claim until a measured rate is read.

References

Every number above carries a reference number. Click one to see the source and where in it the value comes from.

References
Source	Type	Year	Used for
3003 Aluminium Technical Datasheet (Smiths Metal Centres, UK)	datasheet	2023	17 values
Aluminium Alloy 3003 / 3003A Technical Data Sheet (AircraftMaterials UK)	datasheet		21 values
5052 Aluminium Technical Datasheet (Smiths Metal Centres, UK)	datasheet	2023	0 values
3003 aluminium alloy (Wikipedia), used for designations and composition cross-check only	web		0 values
Mineral Commodity Summaries 2026, Aluminum	report	2026	1 value
Mineral Commodity Summaries 2026, Bauxite and Alumina	report	2026	2 values
Mineral Commodity Summaries 2026, Manganese	report	2026	1 value
Critical raw materials (European Commission, fifth list 2023)	web		0 values
Aluminum, PubChem compound CID 5359268: Safety and Hazards, GHS Classification	database		2 values
Manganese, PubChem compound CID 23930: Safety and Hazards, GHS Classification	database		1 value

References
Identity
Formula	Al-Mn-Cu wrought alloy (3003). Composition limits in wt%: Mn 1.0 to 1.5, Cu 0.05 to 0.20, Fe max 0.70, Si max 0.60, Zn max 0.10, Mg max 0.05, each other element max 0.05 and total others max 0.15, Al remainder
Role	general-purpose wrought alloy
Benchmarks	25

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