Aluminium alloy 7475-T7351 7475-T7351

Wrought Al-Zn-Mg-Cu-Cr alloy, composition by weight per the mfgrobots AA 7475 (T₇₃₅₁) table: Al balance, Zn 5.2 to 6.2%, Mg 1.9 to 2.6%, Cu 1.2 to 1.9%, Cr 0.18 to 0.25%

Also known as UNS A97475, EN 3.4384, AMS 4202, AA 7475

AA 7475 in the T7351 temper is a wrought aluminium-zinc-magnesium-copper alloy sold as plate and sheet.

8 sources · Updated 2026-11-01 · CC BY 4.0

Evidence level

2 of 5

Lab-measured

Density

2.81 g/cm³

Yield strength by thickness

425 MPa

Tensile strength

510 MPa

Fracture toughness

> 41 ksi√in

Thermal conductivity

138 to 163 W/(m·K)

Recipe, share of the weight

Al balanceAluminium
Zn 5.2 to 6.2%Zinc
Mg 1.9 to 2.6%Magnesium
Cu 1.2 to 1.9%Copper
Cr 0.18 to 0.25%Chromium

Best for

Plate and sheet for aerospace structures where high strength and fracture toughness matter

Weakest at

Weldability (the supplier rates it poor) and stress-corrosion cracking where tensile stress runs across the grain

Risk at a glance

People No data. No hazard data recorded
If it fails No data. No failure risks recorded
Corrosion No data. No corrosion data recorded

Quick facts: 7475-T7351

Key properties of 7475-T7351
Property	Value	Basis
Density	2.81 g/cm³	1 sourced value
Yield strength	365 to 425 MPa	4 sourced values across conditions
Tensile strength	448 to 510 MPa	5 sourced values across conditions
Young's modulus	70 GPa	1 sourced value
Thermal conductivity	138 to 163 W/(m·K)	2 sourced values across conditions
Thermal expansion (CTE)	23 ppm/K	1 sourced value
Melting point	475 to 635 °C	2 sourced values across conditions

What is the density of Aluminium alloy 7475-T7351?

Aluminium alloy 7475-T7351 has a density of 2.81 g/cm³. The source and test conditions are listed in the properties table on this page.

What is the thermal conductivity of Aluminium alloy 7475-T7351?

Aluminium alloy 7475-T7351 has a thermal conductivity of 138 to 163 W/(m·K). The range covers 2 sourced values across the tempers, forms and test conditions the sources report; room-temperature values are used where a source states a temperature.

What is the coefficient of thermal expansion of Aluminium alloy 7475-T7351?

Aluminium alloy 7475-T7351 has a coefficient of thermal expansion of 23 ppm/K. The source and test conditions are listed in the properties table on this page.

What is the melting point of Aluminium alloy 7475-T7351?

Aluminium alloy 7475-T7351 has a melting point of 475 to 635 °C. The range covers 2 sourced values across the tempers, forms and test conditions the sources report; room-temperature values are used where a source states a temperature.

What is the yield strength of Aluminium alloy 7475-T7351?

Aluminium alloy 7475-T7351 has a yield strength of 365 to 425 MPa. The range covers 4 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 7475-T7351?

Aluminium alloy 7475-T7351 is also written as UNS A97475, EN 3.4384, AMS 4202, AA 7475. Each code is printed in the source listed beside it in the designations table.

What is Aluminium alloy 7475-T7351 used for?

Uses recorded in the sources include Aircraft and other aerospace assemblies; Aircraft fuselage panels, wing skins and high-strength fasteners.

Why it exists

AA 7475 in the T7351 temper is a high-toughness wrought aluminium alloy sold as plate and sheet. Its alloying elements are zinc, magnesium and copper, with a small addition of chromium. The supplier table gives a minimum yield strength that falls with thickness, and minimum fracture toughness for thick plate. The mfgrobots article names aircraft and other aerospace assemblies as the main application. Where the two sources give different values, both are shown.

Where it's used

Aircraft and aerospace assemblies

The mfgrobots article says the alloy is widely used where high strength is needed, including aircraft and other aerospace assemblies.

Aircraft fuselage panels, wing skins and fasteners

The Referans Metal page says aircraft fuselage panels, wing skins, high-strength fasteners and certain military system components are typical uses of this alloy.

Recipe

Wrought Al-Zn-Mg-Cu-Cr alloy, composition by weight per the mfgrobots AA 7475 (T₇₃₅₁) table: Al balance, Zn 5.2 to 6.2%, Mg 1.9 to 2.6%, Cu 1.2 to 1.9%, Cr 0.18 to 0.25%; Fe 0.12%, Si 0.1%, Mn 0.06% and Ti 0.06% are printed as single values. The article describes the alloy as derived from 7075.

AA 7475 (T7351) is a wrought aluminium alloy whose main additions are zinc, magnesium and copper, with chromium as a minor addition. Its composition by weight is aluminium balance, zinc 5.2 to 6.2%, magnesium 1.9 to 2.6%, copper 1.2 to 1.9% and chromium 0.18 to 0.25%. Iron, silicon, manganese and titanium are printed as single values of 0.12%, 0.1%, 0.06% and 0.06%.

What 7475-T7351 is made of
Ingredient	Share of the weight	What it does
Aluminium Al	balance	The matrix metal of the wrought alloy.
Zinc Zn	5.2 to 6.2%	The main hardening addition.
Magnesium Mg	1.9 to 2.6%	Works with zinc and copper to harden the alloy.
Copper Cu	1.2 to 1.9%	Alloying addition that contributes to strength.
Chromium Cr	0.18 to 0.25%	Minor addition that controls grain structure.

Weight shares are as printed in the sources.

What it can do

Density

2.81 g/cm³

measured

The density is 2.81 g/cm³ for the T7351 condition, per the mfgrobots article.

Yield strength by thickness

425 MPa

measured

The supplier's minimum yield strength is 414 MPa for product over 25.43 mm up to 38.10 mm thick, 393 MPa over 50.83 mm up to 63.50 mm and 365 MPa over 76.25 mm up to 88.90 mm.

Tensile strength

510 MPa

measured

The supplier gives 510 MPa and the article gives 495 MPa for the same temper. Both are recorded, and neither is treated as the only value.

Fracture toughness

> 41 ksi√in

measured

The supplier's minimum L-T fracture toughness is 41.0 ksi√in for plate of 1.250-4.000 in. (31.75-101.60 mm) thickness, and 34.0 ksi√in in the T-L orientation.

Thermal conductivity

138 to 163 W/(m·K)

measured

The article gives a thermal conductivity range of 138 to 163 W/(m·K), and the supplier gives 163 W/m.K as a single value.

How it compares

The supplier rates corrosion resistance as high and strength as good, but it gives its strength values as minimums that depend on thickness, so values from different thickness bands should not be compared directly. The supplier's single yield value of 425 MPa has no thickness stated. This profile does not rank AA 7475 against other aluminium alloys because no other alloy's values were recorded here.

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	7475-T7351	6061	7075-T6	2024	5052	5XXX	2195 (Al-Cu-Li)	Al	1050	2011	2014	2017	2017A	2219	2319	2618A	3003	3103	4047	5019	5056	5083	AlMg2	AlMg3	6013	6063	6082	6101	AA7050	AA8011	Au-Al IMCs	Al master alloys
Thermal behavior and safety
Melting range	475 to 635 °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	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
Melting point, supplier table	477 °C³	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	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 range	138 to 163 W/(m·K)⁴	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	190 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)	218 W/(m·K)	154 W/(m·K)	210 to 220 W/(m·K)	no data	no data
Thermal conductivity, supplier table	163 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	190 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)	218 W/(m·K)	154 W/(m·K)	210 to 220 W/(m·K)	no data	no data
Physical and electrical
Density, T7351	2.81 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	2.73 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, supplier table	135 HB¹²	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	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data	no data
Other measurements
Modulus of elasticity	70 GPa⁶	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	69.5 GPa	no data	70 GPa	71 GPa	72 GPa	70 GPa	70 GPa	71 GPa	69.5 GPa	70 GPa	69 GPa	71.5 GPa	70 GPa	no data	no data
Coefficient of thermal expansion	23 µm/m.°C⁷	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 ppm/K	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
Yield strength, supplier table	425 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	50 MPa	> 110 MPa	55 MPa	no data	118 MPa	> 125 MPa	> 120 MPa	> 80 MPa	350 MPa	21 ksi	> 255 MPa	28000 psi	> 414 MPa	no data	no data	no data
Ultimate strength, supplier table	510 MPa⁹	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	110 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, article	495 MPa¹⁰	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	110 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 A50 mm, supplier table	12 %¹¹	17 %	11 %	19 %	25 %	12 %	8 %	50 to 65 %	4 to 8 %	16 %	> 6 %	18 %	18 %	> 6 %	12 %	> 5 %	25 %	> 8 %	12 %	> 2 %	20 %	> 12 %	4 to 12 %	> 12 %	4 %	8 %	> 9 %	> 8 %	> 7 %	> 1 %	no data	no data
Minimum yield strength, thickness over 25.43 to 38.10 mm	> 414 MPa¹³	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	50 MPa	> 110 MPa	55 MPa	no data	118 MPa	> 125 MPa	> 120 MPa	> 80 MPa	350 MPa	21 ksi	> 255 MPa	28000 psi	> 414 MPa	no data	no data	no data
Minimum yield strength, thickness over 50.83 to 63.50 mm	> 393 MPa¹⁴	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	50 MPa	> 110 MPa	55 MPa	no data	118 MPa	> 125 MPa	> 120 MPa	> 80 MPa	350 MPa	21 ksi	> 255 MPa	28000 psi	> 414 MPa	no data	no data	no data
Minimum yield strength, thickness over 76.25 to 88.90 mm	> 365 MPa¹⁵	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	50 MPa	> 110 MPa	55 MPa	no data	118 MPa	> 125 MPa	> 120 MPa	> 80 MPa	350 MPa	21 ksi	> 255 MPa	28000 psi	> 414 MPa	no data	no data	no data
Minimum ultimate strength, thickness over 25.43 to 38.10 mm	> 490 MPa¹⁶	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	110 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
Minimum ultimate strength, thickness over 50.83 to 63.50 mm	> 476 MPa¹⁷	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	110 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
Minimum ultimate strength, thickness over 76.25 to 88.90 mm	> 448 MPa¹⁸	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	110 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
Minimum elongation A50 mm, thickness over 25.43 to 38.10 mm	> 9 %¹⁹	17 %	11 %	19 %	25 %	12 %	8 %	50 to 65 %	4 to 8 %	16 %	> 6 %	18 %	18 %	> 6 %	12 %	> 5 %	25 %	> 8 %	12 %	> 2 %	20 %	> 12 %	4 to 12 %	> 12 %	4 %	8 %	> 9 %	> 8 %	> 7 %	> 1 %	no data	no data
Minimum elongation A50 mm, thickness over 50.83 to 63.50 mm	> 8 %²⁰	17 %	11 %	19 %	25 %	12 %	8 %	50 to 65 %	4 to 8 %	16 %	> 6 %	18 %	18 %	> 6 %	12 %	> 5 %	25 %	> 8 %	12 %	> 2 %	20 %	> 12 %	4 to 12 %	> 12 %	4 %	8 %	> 9 %	> 8 %	> 7 %	> 1 %	no data	no data
Minimum elongation A50 mm, thickness over 76.25 to 88.90 mm	> 8 %²¹	17 %	11 %	19 %	25 %	12 %	8 %	50 to 65 %	4 to 8 %	16 %	> 6 %	18 %	18 %	> 6 %	12 %	> 5 %	25 %	> 8 %	12 %	> 2 %	20 %	> 12 %	4 to 12 %	> 12 %	4 %	8 %	> 9 %	> 8 %	> 7 %	> 1 %	no data	no data
Minimum fracture toughness, L-T orientation	> 41 ksi√in²²	no data	no data	32 MPa-m½	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	no data	no data	no data	no data	no data	no data	no data	no data	no data
Minimum fracture toughness, T-L orientation	> 34 ksi√in²³	no data	no data	32 MPa-m½	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	no data	no data	no data	no data	no data	no data	no data	no data	no data

Why choose it, and why not

Good for

Plate and sheet where high strength matters in the 25.43 mm to 38.10 mm thickness band (minimum yield 414 MPa).
Aircraft and aerospace assemblies, as the mfgrobots article describes.

Watch out for

Weldability is listed as poor by the supplier.
Stress-corrosion cracking is reported where tensile stress runs transverse to the grain structure.
The tensile values disagree between the supplier (510 MPa) and the article (495 MPa).

AA 7475-T7351 is a high-strength plate and sheet alloy with stated aerospace uses, including aircraft fuselage panels and wing skins. The hazard entry rests on the PubChem component record for aluminium, not on an SDS for the alloy, and the gaps list says so.

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	A97475
EN	3.4384
AMS	4202 (sheet and plate)
AA	7475

Notes

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

Notes for the numbered rows
#	Measurement	Method	Conditions	Caveat
1	Density, T7351	Value printed in the General section of the mfgrobots article	temper T7351temperature not stated	—
2	Melting range	Range printed in the Thermal section of the mfgrobots article	temper T7351basis range as printed	—
3	Melting point, supplier table	Value printed in the Physical Properties table of the supplier page	basis single value as printed; no temper or product form stated	The supplier gives one value and the article gives a range; both are recorded and neither overrides the other.
4	Thermal conductivity range	Range printed in the Thermal section of the mfgrobots article	temper T7351basis range as printed; temperature not stated	—
5	Thermal conductivity, supplier table	Value printed in the Physical Properties table of the supplier page	basis single value as printed; temperature and temper not stated	—
6	Modulus of elasticity	Value printed in the Mechanical section of the mfgrobots article	temper T7351	—
7	Coefficient of thermal expansion	Value printed in the Physical Properties table of the supplier page	basis single value as printed; temperature range not stated	—
8	Yield strength, supplier table	Value printed in the Mechanical Properties table of the supplier page	temper T7351basis single value as printed; no thickness or product form stated	—
9	Ultimate strength, supplier table	Value printed in the Mechanical Properties table of the supplier page	temper T7351basis single value as printed; no thickness or product form stated	The mfgrobots article gives a different tensile value for the same temper; both are recorded.
10	Tensile strength, article	Value printed in the Mechanical section of the mfgrobots article	temper T7351basis value printed alongside T7351; no thickness stated	The supplier table gives 510 MPa for the same temper; both are recorded and neither is preferred here.
11	Elongation A50 mm, supplier table	Value printed in the Mechanical Properties table of the supplier page	temper T7351gauge A50 mmbasis single value as printed	—
12	Hardness, supplier table	Value printed in the Mechanical Properties table of the supplier page	temper T7351basis single value as printed	—
13	Minimum yield strength, thickness over 25.43 to 38.10 mm	Minimum value printed in the Delivery table by thickness on the supplier page	temper T7351thickness over 25.43 mm up to and including 38.10 mmbasis minimum delivery value	—
14	Minimum yield strength, thickness over 50.83 to 63.50 mm	Minimum value printed in the Delivery table by thickness on the supplier page	temper T7351thickness over 50.83 mm up to and including 63.50 mmbasis minimum delivery value	—
15	Minimum yield strength, thickness over 76.25 to 88.90 mm	Minimum value printed in the Delivery table by thickness on the supplier page	temper T7351thickness over 76.25 mm up to and including 88.90 mmbasis minimum delivery value	—
16	Minimum ultimate strength, thickness over 25.43 to 38.10 mm	Minimum value printed in the Delivery table by thickness on the supplier page	temper T7351thickness over 25.43 mm up to and including 38.10 mmbasis minimum delivery value	—
17	Minimum ultimate strength, thickness over 50.83 to 63.50 mm	Minimum value printed in the Delivery table by thickness on the supplier page	temper T7351thickness over 50.83 mm up to and including 63.50 mmbasis minimum delivery value	—
18	Minimum ultimate strength, thickness over 76.25 to 88.90 mm	Minimum value printed in the Delivery table by thickness on the supplier page	temper T7351thickness over 76.25 mm up to and including 88.90 mmbasis minimum delivery value	—
19	Minimum elongation A50 mm, thickness over 25.43 to 38.10 mm	Minimum value printed in the Delivery table by thickness on the supplier page	temper T7351thickness over 25.43 mm up to and including 38.10 mmbasis minimum delivery value	—
20	Minimum elongation A50 mm, thickness over 50.83 to 63.50 mm	Minimum value printed in the Delivery table by thickness on the supplier page	temper T7351thickness over 50.83 mm up to and including 63.50 mmbasis minimum delivery value	—
21	Minimum elongation A50 mm, thickness over 76.25 to 88.90 mm	Minimum value printed in the Delivery table by thickness on the supplier page	temper T7351thickness over 76.25 mm up to and including 88.90 mmbasis minimum delivery value	—
22	Minimum fracture toughness, L-T orientation	Minimum value printed in the Minimum Fracture Toughness table on the supplier page	temper T7351thickness 1.250-4.000 in. (31.75-101.60 mm)orientation L-Tbasis minimum value; the page prints 41.0 (45.0), so the MPa√m equivalent is 45.0	The page prints the ksi√in value first and the MPa√m value in brackets.
23	Minimum fracture toughness, T-L orientation	Minimum value printed in the Minimum Fracture Toughness table on the supplier page	temper T7351thickness 1.250-4.000 in. (31.75-101.60 mm)orientation T-Lbasis minimum value; the page prints 34.0 (37.3), so the MPa√m equivalent is 37.3	The page prints the ksi√in value first and the MPa√m value in brackets.

Corrosion and compatibility

What happens when it meets other materials and environments.

Corrosion and compatibility
Environment	Concern	What happens
Tensile stress transverse to the grain structure	not rated	The mfgrobots article says operational damage occurs in areas with tensile stress transverse to the grain.¹
Industrial or seawater atmosphere, without protection	not rated	The article's general-corrosion wording is qualitative and carries no rate.²
Supplier characteristic rating	not rated	The supplier lists corrosion resistance as high, a word rating only.³

Corrosion details
#	Environment	Details	Test conditions
1	Tensile stress transverse to the grain structure	The article's stress-corrosion entry reads 'Operational damage in areas with tensile stresses transverse to the grain structure'. The article gives no crack-growth rate or test method.	basis qualitative statement; no rating printedtemper T7351
2	Industrial or seawater atmosphere, without protection	The article's wording is 'general: good, without protection in industrial or seawater atmosphere'. It is read here as a word rating only, with no test basis printed.	basis qualitative word rating; no test method or exposure time printedtemper T7351
3	Supplier characteristic rating	The Characteristic Properties list on the supplier page reads 'Corrosion Resistance: High'. No test basis is printed next to it.	basis word rating on a stockist page; no test method printed

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 the finished 7475 alloy was read. PubChem's aluminium record carries hazard statements, but they are component-level and do not classify this alloy.

Component records: PubChem lists 'H228: Flammable solid', 'H250: Catches fire spontaneously if exposed to air' and 'H261: In contact with water releases flammable gas' for the aluminium record. These do not classify the finished alloy.
Not covered: No alloy SDS, and no data on machining dust or welding fume, was read.

If it fails

The article's documented failure concern is stress-corrosion cracking where tensile stress runs across the grain.

Stress-corrosion cracking: The article reports operational damage in areas with tensile stress transverse to the grain structure. It prints no rate.
Surface corrosion: The article's general-corrosion wording is qualitative and carries no rate. The supplier lists corrosion resistance as high, with no test basis.

Handling and storage

Machining: The article says that for machining the alloy works best in the annealed condition.
Product SDS: Obtain the supplier SDS for the exact stock form before machining, grinding or welding.

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

Failure risks

Failure risks
Failure	Trigger and consequence
Stress-corrosion cracking	Tensile stress in the direction transverse to the grain structure, in a corrosive environmentThe mfgrobots article reports operational damage in these areas; no rate or crack-growth data are printed.
Surface corrosion in industrial or seawater atmospheres	Exposure without protectionThe article's wording is qualitative and quantifies no consequence.

Handling and storage

The article says that for machining the alloy works best in the annealed condition.
No 7475 supplier safety data sheet was read. Obtain the SDS for the exact stock form before machining, grinding or welding.

Supply and geography

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

Aluminium (primary smelter production; supply context for the base metal)

Top producers (2025): China 60.8%, India 5.7%, Russia 5.3%, Canada 4.5%, United Arab Emirates 3.6%
Recycling: USGS: about 3.6 million tons of aluminum were recovered from purchased scrap in the United States in 2025.
Substitutes: USGS: composites can substitute for aluminum in aircraft fuselages and wings.

Zinc (alloying element)

Top producers (2025): China 31.5%, Peru 11.5%, Australia 8.5%, India 6.7%

Chromium (alloying element)

Top producers (2025): South Africa 45.1%, Turkey 17.6%, Kazakhstan 13.7%, India 5.9%

Copper (alloying element)

Critical mineral lists: US: listed

Documents

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

Documents
Document	Type	Year
Referans Metal product page, AlZn5.5MgCu 7475 T7351 (AMS 4202), English	datasheet
MFG Robots article, AA 7475 (T7351) High-Toughness Aluminum Alloy	datasheet
Mineral Commodity Summaries 2026, Aluminum	report	2026
Mineral Commodity Summaries 2026, Zinc	report	2026
Mineral Commodity Summaries 2026, Copper	report	2026
Mineral Commodity Summaries 2026, Chromium	report	2026
PubChem Aluminum, CID 5359268, GHS classification summary	database	2026

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-7475
spore_version: 0.2
family: aluminium-alloys
name: Aluminium alloy 7475-T7351
abbreviation: 7475-T7351
role: high-toughness wrought structural alloy (plate and sheet)
category: metals
type: aluminium
summary: AA 7475 in the T7351 temper is a wrought aluminium-zinc-magnesium-copper alloy sold as plate and sheet. The supplier table gives a minimum yield strength of 414 MPa for product over 25.43 mm up to 38.10 mm thick, falling to 365 MPa in the thickest band it lists. The mfgrobots article calls the alloy high-toughness and names aerospace assemblies as its use.
best_for: Plate and sheet for aerospace structures where high strength and fracture toughness matter
weakest_at: Weldability (the supplier rates it poor) and stress-corrosion cracking where tensile stress runs across the grain
identity:
  formula: 'Wrought Al-Zn-Mg-Cu-Cr alloy, composition by weight per the mfgrobots AA 7475 (T7351) table: Al balance, Zn 5.2 to 6.2%, Mg 1.9 to 2.6%, Cu 1.2 to 1.9%, Cr 0.18 to 0.25%; Fe 0.12%, Si 0.1%, Mn 0.06% and Ti 0.06% are printed as single values. The article describes the alloy as derived from 7075.'
  source: mfg-7475
  where: Chemical Properties table, T7351; Title and body text
  designations:
    - system: AMS
      code: '4202'
      note: sheet and plate
      source: ref-7475
      where: Designations line, AMS 4202 / AlZn5.5MgCu / 7475 / T7351
    - system: UNS
      code: A97475
      source: ref-7475
      where: Sheet / Plate line, UNS A97475
    - system: EN
      code: '3.4384'
      source: ref-7475
      where: Sheet / Plate line, material number 3.4384
    - system: AA
      code: '7475'
      source: mfg-7475
      where: Title line, AA 7475 (T7351)
tags:
  environments: []
  stresses:
    - stress-corrosion-cracking
  applications:
    - structures
properties:
  - benchmark: density
    label: Density, T7351
    value: 2.81
    unit: g/cm³
    scope: material
    conditions:
      temper: T7351
      temperature: not stated
    method: Value printed in the General section of the mfgrobots article
    status: ground
    source: mfg-7475
    where: General section, Density (condition T7351)
  - benchmark: melting_point
    label: Melting range
    value: 475
    value_high: 635
    bound: range
    unit: °C
    scope: material
    conditions:
      temper: T7351
      basis: range as printed
    method: Range printed in the Thermal section of the mfgrobots article
    status: ground
    source: mfg-7475
    where: Thermal section, melting point
  - benchmark: melting_point
    label: Melting point, supplier table
    value: 477
    unit: °C
    scope: material
    conditions:
      basis: single value as printed; no temper or product form stated
    method: Value printed in the Physical Properties table of the supplier page
    status: ground
    note: The supplier gives one value and the article gives a range; both are recorded and neither overrides the other.
    source: ref-7475
    where: Physical Properties table, Melting Point
  - benchmark: thermal_conductivity
    label: Thermal conductivity range
    value: 138
    value_high: 163
    bound: range
    unit: W/(m·K)
    scope: material
    conditions:
      temper: T7351
      basis: range as printed; temperature not stated
    method: Range printed in the Thermal section of the mfgrobots article
    status: ground
    source: mfg-7475
    where: Thermal section, thermal conductivity
  - benchmark: thermal_conductivity
    label: Thermal conductivity, supplier table
    value: 163
    unit: W/m.K
    scope: material
    conditions:
      basis: single value as printed; temperature and temper not stated
    method: Value printed in the Physical Properties table of the supplier page
    status: ground
    source: ref-7475
    where: Physical Properties table, Thermal Conductivity
  - benchmark: elastic_modulus
    label: Modulus of elasticity
    value: 70
    unit: GPa
    scope: material
    conditions:
      temper: T7351
    method: Value printed in the Mechanical section of the mfgrobots article
    status: ground
    source: mfg-7475
    where: Mechanical section, elastic modulus
  - benchmark: cte
    label: Coefficient of thermal expansion
    value: 23
    unit: µm/m.°C
    scope: material
    conditions:
      basis: single value as printed; temperature range not stated
    method: Value printed in the Physical Properties table of the supplier page
    status: ground
    source: ref-7475
    where: Physical Properties table, Thermal Expansion
  - benchmark: yield_strength
    label: Yield strength, supplier table
    value: 425
    unit: MPa
    scope: material
    conditions:
      temper: T7351
      basis: single value as printed; no thickness or product form stated
    method: Value printed in the Mechanical Properties table of the supplier page
    status: ground
    source: ref-7475
    where: Mechanical Properties table, Yield Strength
  - benchmark: ultimate_tensile_strength
    label: Ultimate strength, supplier table
    value: 510
    unit: MPa
    scope: material
    conditions:
      temper: T7351
      basis: single value as printed; no thickness or product form stated
    method: Value printed in the Mechanical Properties table of the supplier page
    status: ground
    note: The mfgrobots article gives a different tensile value for the same temper; both are recorded.
    source: ref-7475
    where: Mechanical Properties table, Ultimate Strength
  - benchmark: ultimate_tensile_strength
    label: Tensile strength, article
    value: 495
    unit: MPa
    scope: material
    conditions:
      temper: T7351
      basis: value printed alongside T7351; no thickness stated
    method: Value printed in the Mechanical section of the mfgrobots article
    status: ground
    note: The supplier table gives 510 MPa for the same temper; both are recorded and neither is preferred here.
    source: mfg-7475
    where: Mechanical section, tensile strength
  - benchmark: elongation
    label: Elongation A50 mm, supplier table
    value: 12
    unit: '%'
    scope: material
    conditions:
      temper: T7351
      gauge: A50 mm
      basis: single value as printed
    method: Value printed in the Mechanical Properties table of the supplier page
    status: ground
    source: ref-7475
    where: Mechanical Properties table, Elongation A50 mm
  - benchmark: hardness
    label: Hardness, supplier table
    value: 135
    unit: HB
    scope: material
    conditions:
      temper: T7351
      basis: single value as printed
    method: Value printed in the Mechanical Properties table of the supplier page
    status: ground
    source: ref-7475
    where: Mechanical Properties table, Hardness
  - benchmark: yield_strength
    label: Minimum yield strength, thickness over 25.43 to 38.10 mm
    value: 414
    unit: MPa
    scope: material
    bound: lower
    conditions:
      temper: T7351
      thickness: over 25.43 mm up to and including 38.10 mm
      basis: minimum delivery value
    method: Minimum value printed in the Delivery table by thickness on the supplier page
    status: ground
    source: ref-7475
    where: Delivery table by thickness, Yield Strength (Min.), first row
  - benchmark: yield_strength
    label: Minimum yield strength, thickness over 50.83 to 63.50 mm
    value: 393
    unit: MPa
    scope: material
    bound: lower
    conditions:
      temper: T7351
      thickness: over 50.83 mm up to and including 63.50 mm
      basis: minimum delivery value
    method: Minimum value printed in the Delivery table by thickness on the supplier page
    status: ground
    source: ref-7475
    where: Delivery table by thickness, Yield Strength (Min.), second row
  - benchmark: yield_strength
    label: Minimum yield strength, thickness over 76.25 to 88.90 mm
    value: 365
    unit: MPa
    scope: material
    bound: lower
    conditions:
      temper: T7351
      thickness: over 76.25 mm up to and including 88.90 mm
      basis: minimum delivery value
    method: Minimum value printed in the Delivery table by thickness on the supplier page
    status: ground
    source: ref-7475
    where: Delivery table by thickness, Yield Strength (Min.), third row
  - benchmark: ultimate_tensile_strength
    label: Minimum ultimate strength, thickness over 25.43 to 38.10 mm
    value: 490
    unit: MPa
    scope: material
    bound: lower
    conditions:
      temper: T7351
      thickness: over 25.43 mm up to and including 38.10 mm
      basis: minimum delivery value
    method: Minimum value printed in the Delivery table by thickness on the supplier page
    status: ground
    source: ref-7475
    where: Delivery table by thickness, Ultimate Strength (Min.), first row
  - benchmark: ultimate_tensile_strength
    label: Minimum ultimate strength, thickness over 50.83 to 63.50 mm
    value: 476
    unit: MPa
    scope: material
    bound: lower
    conditions:
      temper: T7351
      thickness: over 50.83 mm up to and including 63.50 mm
      basis: minimum delivery value
    method: Minimum value printed in the Delivery table by thickness on the supplier page
    status: ground
    source: ref-7475
    where: Delivery table by thickness, Ultimate Strength (Min.), second row
  - benchmark: ultimate_tensile_strength
    label: Minimum ultimate strength, thickness over 76.25 to 88.90 mm
    value: 448
    unit: MPa
    scope: material
    bound: lower
    conditions:
      temper: T7351
      thickness: over 76.25 mm up to and including 88.90 mm
      basis: minimum delivery value
    method: Minimum value printed in the Delivery table by thickness on the supplier page
    status: ground
    source: ref-7475
    where: Delivery table by thickness, Ultimate Strength (Min.), third row
  - benchmark: elongation
    label: Minimum elongation A50 mm, thickness over 25.43 to 38.10 mm
    value: 9
    unit: '%'
    scope: material
    bound: lower
    conditions:
      temper: T7351
      thickness: over 25.43 mm up to and including 38.10 mm
      basis: minimum delivery value
    method: Minimum value printed in the Delivery table by thickness on the supplier page
    status: ground
    source: ref-7475
    where: Delivery table by thickness, Elongation A50 mm % (Min.), first row
  - benchmark: elongation
    label: Minimum elongation A50 mm, thickness over 50.83 to 63.50 mm
    value: 8
    unit: '%'
    scope: material
    bound: lower
    conditions:
      temper: T7351
      thickness: over 50.83 mm up to and including 63.50 mm
      basis: minimum delivery value
    method: Minimum value printed in the Delivery table by thickness on the supplier page
    status: ground
    source: ref-7475
    where: Delivery table by thickness, Elongation A50 mm % (Min.), second row
  - benchmark: elongation
    label: Minimum elongation A50 mm, thickness over 76.25 to 88.90 mm
    value: 8
    unit: '%'
    scope: material
    bound: lower
    conditions:
      temper: T7351
      thickness: over 76.25 mm up to and including 88.90 mm
      basis: minimum delivery value
    method: Minimum value printed in the Delivery table by thickness on the supplier page
    status: ground
    source: ref-7475
    where: Delivery table by thickness, Elongation A50 mm % (Min.), third row
  - benchmark: fracture_toughness
    label: Minimum fracture toughness, L-T orientation
    value: 41
    unit: ksi√in
    scope: material
    bound: lower
    conditions:
      temper: T7351
      thickness: 1.250-4.000 in. (31.75-101.60 mm)
      orientation: L-T
      basis: minimum value; the page prints 41.0 (45.0), so the MPa√m equivalent is 45.0
    method: Minimum value printed in the Minimum Fracture Toughness table on the supplier page
    status: ground
    note: The page prints the ksi√in value first and the MPa√m value in brackets.
    source: ref-7475
    where: Minimum Fracture Toughness table, L-T column
  - benchmark: fracture_toughness
    label: Minimum fracture toughness, T-L orientation
    value: 34
    unit: ksi√in
    scope: material
    bound: lower
    conditions:
      temper: T7351
      thickness: 1.250-4.000 in. (31.75-101.60 mm)
      orientation: T-L
      basis: minimum value; the page prints 34.0 (37.3), so the MPa√m equivalent is 37.3
    method: Minimum value printed in the Minimum Fracture Toughness table on the supplier page
    status: ground
    note: The page prints the ksi√in value first and the MPa√m value in brackets.
    source: ref-7475
    where: Minimum Fracture Toughness table, T-L column
corrosion:
  - environment: Tensile stress transverse to the grain structure
    headline: The mfgrobots article says operational damage occurs in areas with tensile stress transverse to the grain.
    effect: The article's stress-corrosion entry reads 'Operational damage in areas with tensile stresses transverse to the grain structure'. The article gives no crack-growth rate or test method.
    rating: unknown
    conditions:
      basis: qualitative statement; no rating printed
      temper: T7351
    source: mfg-7475
    where: Corrosion Properties section, stress-corrosion entry
  - environment: Industrial or seawater atmosphere, without protection
    headline: The article's general-corrosion wording is qualitative and carries no rate.
    effect: 'The article''s wording is ''general: good, without protection in industrial or seawater atmosphere''. It is read here as a word rating only, with no test basis printed.'
    rating: unknown
    conditions:
      basis: qualitative word rating; no test method or exposure time printed
      temper: T7351
    source: mfg-7475
    where: Corrosion Properties section, general corrosion entry
  - environment: Supplier characteristic rating
    headline: The supplier lists corrosion resistance as high, a word rating only.
    effect: 'The Characteristic Properties list on the supplier page reads ''Corrosion Resistance: High''. No test basis is printed next to it.'
    rating: unknown
    conditions:
      basis: word rating on a stockist page; no test method printed
    source: ref-7475
    where: Characteristic Properties list, Corrosion Resistance
risks:
  hazards:
    - text: 'PubChem''s aluminium record includes ''H228: Flammable solid'', ''H250: Catches fire spontaneously if exposed to air'' and ''H261: In contact with water releases flammable gas''. These are component-level data and do not classify the 7475 alloy as supplied.'
      ghs:
        - H228
        - H250
        - H261
      source: pubchem-al
      where: Safety and Hazards, GHS Classification (CID 5359268)
  failure_risks:
    - mode: Stress-corrosion cracking
      trigger: Tensile stress in the direction transverse to the grain structure, in a corrosive environment
      consequence: The mfgrobots article reports operational damage in these areas; no rate or crack-growth data are printed.
      source: mfg-7475
      where: Corrosion Properties section, stress-corrosion entry
    - mode: Surface corrosion in industrial or seawater atmospheres
      trigger: Exposure without protection
      consequence: The article's wording is qualitative and quantifies no consequence.
      source: mfg-7475
      where: Corrosion Properties section, general corrosion entry
  side_effects: []
  handling:
    - text: The article says that for machining the alloy works best in the annealed condition.
      source: mfg-7475
      where: Machining statement in the article body
    - text: No 7475 supplier safety data sheet was read. Obtain the SDS for the exact stock form before machining, grinding or welding.
      source: pubchem-al
      where: 'Gap: not an alloy SDS; PubChem component record only'
  mitigations: []
uses:
  - application: structures
    device: Aircraft and other aerospace assemblies
    example: The mfgrobots article says the alloy is widely used where high strength is needed, including aircraft and other aerospace assemblies.
    source: mfg-7475
    where: Applications statement in the article body
  - application: structures
    device: Aircraft fuselage panels, wing skins and high-strength fasteners
    example: The Referans Metal page says "Aircraft fuselage panels, wing skins, high-strength fasteners, and certain military system components are typical uses of this alloy."
    source: ref-7475
    where: '"From an application perspective" paragraph, English product page'
supply:
  - subject: Aluminium (primary smelter production; supply context for the base metal)
    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: []
    recycling: 'USGS: about 3.6 million tons of aluminum were recovered from purchased scrap in the United States in 2025.'
    substitutes:
      - 'USGS: composites can substitute for aluminum in aircraft fuselages and wings.'
    source: usgs-al
    where: World Smelter Production and Capacity table, 2025e; shares calculated by Space Mushroom from printed tonnages against the 74,000 thousand t world total (rounded); Recycling; Substitutes
  - subject: Zinc (alloying element)
    producers:
      - country: China
        share_percent: 31.5
        year: 2025
      - country: Peru
        share_percent: 11.5
        year: 2025
      - country: Australia
        share_percent: 8.5
        year: 2025
      - country: India
        share_percent: 6.7
        year: 2025
    critical_lists: []
    source: usgs-zn
    where: World Mine Production and Reserves table, 2025e; shares calculated by Space Mushroom against the 13,000 thousand t world total (rounded)
  - subject: Chromium (alloying element)
    producers:
      - country: South Africa
        share_percent: 45.1
        year: 2025
      - country: Turkey
        share_percent: 17.6
        year: 2025
      - country: Kazakhstan
        share_percent: 13.7
        year: 2025
      - country: India
        share_percent: 5.9
        year: 2025
    critical_lists: []
    source: usgs-cr
    where: World Mine Production and Reserves table, 2025e; shares calculated by Space Mushroom against the 51,000 thousand t world total (rounded)
  - subject: Copper (alloying element)
    producers: []
    critical_lists:
      - list: USGS Final 2025 List of Critical Minerals
        listed: true
    source: usgs-cu
    where: 'Summary text, critical minerals paragraph: the 2025 list published November 7, 2025 added copper'
documents:
  - title: Referans Metal product page, AlZn5.5MgCu 7475 T7351 (AMS 4202), English
    type: datasheet
    url: https://www.referansmetal.com/alasimli-aluminyum/product/74/levha-plaka/ams-4202-alzn5-5mgcu-7475-t7351?lang=en
  - title: MFG Robots article, AA 7475 (T7351) High-Toughness Aluminum Alloy
    type: datasheet
    url: https://www.mfgrobots.com/Article/material/metal/40535.html
  - title: Mineral Commodity Summaries 2026, Aluminum
    type: report
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-aluminum.pdf
    year: 2026
  - title: Mineral Commodity Summaries 2026, Zinc
    type: report
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-zinc.pdf
    year: 2026
  - title: Mineral Commodity Summaries 2026, Copper
    type: report
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-copper.pdf
    year: 2026
  - title: Mineral Commodity Summaries 2026, Chromium
    type: report
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-chromium.pdf
    year: 2026
  - title: PubChem Aluminum, CID 5359268, GHS classification summary
    type: database
    url: https://pubchem.ncbi.nlm.nih.gov/compound/5359268
    year: 2026
gaps:
  - No 7475 supplier safety data sheet was read. Hazards rest on PubChem component records for aluminium, which do not classify the finished alloy.
  - Supplier and article values disagree for tensile strength and melting point. Both are recorded side by side; no single value for the grade was chosen.
  - A second supplier page prints density and elastic modulus with decimal commas. Those values were not recorded, because the printed form could not be matched to the value.
  - 'Electrical conductivity, shear strength and Poisson''s ratio were not recorded as this grade''s own values: the sources give them as typical 7000-series values or in a form that could not be checked.'
  - Electrical resistivity and the mfgrobots coefficient of thermal expansion are printed with exponents and were left out.
  - Hardness, fracture toughness and the yield and ultimate values by thickness are recorded under short names (hardness, fracture_toughness) because no canonical name exists for them in the property file.
  - The supplier's minimum fracture-toughness values apply to the 1.250-4.000 in. (31.75-101.60 mm) thickness band only.
  - Critical-mineral status for aluminium and zinc, and for chromium, was not found in the USGS summaries read. Copper is listed on the 2025 list.
  - The USGS magnesium summary could not be read (the URL returned a web page, not the PDF), so magnesium supply is not included.
  - Wikipedia's 7000-series table gives a composition for 7475 that differs from the supplier and article ranges. It is not used for any value in this profile.
  - Corrosion and stress-corrosion statements carry no rating or rate from the source; ratings are recorded as unknown.
  - No flight, vacuum, radiation or thermal-cycling data for 7475 were found.
  - Titanium.com, Aerocom Metals, Dinco, Quickparts and MatWeb pages were not readable in this run (not found, refused or unreachable).
sources:
  ref-7475:
    title: Referans Metal, AlZn5.5MgCu 7475 T7351 (AMS 4202) product page, English
    url: https://www.referansmetal.com/alasimli-aluminyum/product/74/levha-plaka/ams-4202-alzn5-5mgcu-7475-t7351?lang=en
    kind: datasheet
    license: Supplier web page (cited, not reproduced)
  mfg-7475:
    title: MFG Robots article, AA 7475 (T7351) High-Toughness Aluminum Alloy
    url: https://www.mfgrobots.com/Article/material/metal/40535.html
    kind: web
    license: Web article (cited, not reproduced)
  usgs-al:
    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-zn:
    title: Mineral Commodity Summaries 2026, Zinc
    id: USGS MCS 2026, February 2026
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-zinc.pdf
    year: 2026
    kind: report
    license: Public domain (USGS)
  usgs-cu:
    title: Mineral Commodity Summaries 2026, Copper
    id: USGS MCS 2026, February 2026
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-copper.pdf
    year: 2026
    kind: report
    license: Public domain (USGS)
  usgs-cr:
    title: Mineral Commodity Summaries 2026, Chromium
    id: USGS MCS 2026, February 2026
    url: https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-chromium.pdf
    year: 2026
    kind: report
    license: Public domain (USGS)
  pubchem-al:
    title: Aluminum, PubChem CID 5359268, GHS classification
    id: CID 5359268
    url: https://pubchem.ncbi.nlm.nih.gov/compound/5359268
    kind: database
    license: PubChem public data
  wiki-al:
    title: Aluminium alloy, Wikipedia (7000-series table, composition and history only)
    url: https://en.wikipedia.org/wiki/Aluminium_alloy
    kind: web
    license: CC BY-SA (cited)
license: CC-BY-4.0
updated: '2026-11-01'
review:
  status: draft
  method: assistant
  checked_values: 23
  unreachable: 5
  caveats: 5
  note: Values read in this run from the Referans Metal 7475 T7351 page, the MFG Robots article, USGS Mineral Commodity Summaries 2026 (aluminum, zinc, copper, chromium) and PubChem. Supplier and article values are recorded side by side where they differ. Shares are calculated from printed tonnages.
story:
  recipe:
    line: AA 7475 (T7351) is a wrought aluminium alloy whose main additions are zinc, magnesium and copper, with chromium as a minor addition. Its composition by weight is aluminium balance, zinc 5.2 to 6.2%, magnesium 1.9 to 2.6%, copper 1.2 to 1.9% and chromium 0.18 to 0.25%. Iron, silicon, manganese and titanium are printed as single values of 0.12%, 0.1%, 0.06% and 0.06%.
    parts:
      - name: Aluminium
        symbol: Al
        share_note: balance
        role: The matrix metal of the wrought alloy.
      - name: Zinc
        symbol: Zn
        share_percent: 5.2
        share_high: 6.2
        source: mfg-7475
        where: Chemical Properties table
        role: The main hardening addition.
      - name: Magnesium
        symbol: Mg
        share_percent: 1.9
        share_high: 2.6
        source: mfg-7475
        where: Chemical Properties table
        role: Works with zinc and copper to harden the alloy.
      - name: Copper
        symbol: Cu
        share_percent: 1.2
        share_high: 1.9
        source: mfg-7475
        where: Chemical Properties table
        role: Alloying addition that contributes to strength.
      - name: Chromium
        symbol: Cr
        share_percent: 0.18
        share_high: 0.25
        source: mfg-7475
        where: Chemical Properties table
        role: Minor addition that controls grain structure.
  risk_groups:
    - title: For people
      verdict: No alloy-specific hazard classification found
      lead: No supplier safety data sheet for the finished 7475 alloy was read. PubChem's aluminium record carries hazard statements, but they are component-level and do not classify this alloy.
      gap: No alloy SDS, and no data on machining dust or welding fume, was read.
      points:
        - label: Component records
          line: 'PubChem lists ''H228: Flammable solid'', ''H250: Catches fire spontaneously if exposed to air'' and ''H261: In contact with water releases flammable gas'' for the aluminium record. These do not classify the finished alloy.'
    - title: If it fails
      lead: The article's documented failure concern is stress-corrosion cracking where tensile stress runs across the grain.
      points:
        - label: Stress-corrosion cracking
          line: The article reports operational damage in areas with tensile stress transverse to the grain structure. It prints no rate.
        - label: Surface corrosion
          line: The article's general-corrosion wording is qualitative and carries no rate. The supplier lists corrosion resistance as high, with no test basis.
    - title: Handling and storage
      points:
        - label: Machining
          line: The article says that for machining the alloy works best in the annealed condition.
        - label: Product SDS
          line: Obtain the supplier SDS for the exact stock form before machining, grinding or welding.
  why: AA 7475 in the T7351 temper is a high-toughness wrought aluminium alloy sold as plate and sheet. Its alloying elements are zinc, magnesium and copper, with a small addition of chromium. The supplier table gives a minimum yield strength that falls with thickness, and minimum fracture toughness for thick plate. The mfgrobots article names aircraft and other aerospace assemblies as the main application. Where the two sources give different values, both are shown.
  uses:
    - where: Aircraft and aerospace assemblies
      line: The mfgrobots article says the alloy is widely used where high strength is needed, including aircraft and other aerospace assemblies.
    - where: Aircraft fuselage panels, wing skins and fasteners
      line: The Referans Metal page says aircraft fuselage panels, wing skins, high-strength fasteners and certain military system components are typical uses of this alloy.
  can_do:
    - label: Density
      benchmark: density
      line: The density is 2.81 g/cm³ for the T7351 condition, per the mfgrobots article.
    - label: Yield strength by thickness
      benchmark: yield_strength
      line: The supplier's minimum yield strength is 414 MPa for product over 25.43 mm up to 38.10 mm thick, 393 MPa over 50.83 mm up to 63.50 mm and 365 MPa over 76.25 mm up to 88.90 mm.
    - label: Tensile strength
      benchmark: ultimate_tensile_strength
      line: The supplier gives 510 MPa and the article gives 495 MPa for the same temper. Both are recorded, and neither is treated as the only value.
    - label: Fracture toughness
      benchmark: fracture_toughness
      line: The supplier's minimum L-T fracture toughness is 41.0 ksi√in for plate of 1.250-4.000 in. (31.75-101.60 mm) thickness, and 34.0 ksi√in in the T-L orientation.
    - label: Thermal conductivity
      benchmark: thermal_conductivity
      line: The article gives a thermal conductivity range of 138 to 163 W/(m·K), and the supplier gives 163 W/m.K as a single value.
  compare: The supplier rates corrosion resistance as high and strength as good, but it gives its strength values as minimums that depend on thickness, so values from different thickness bands should not be compared directly. The supplier's single yield value of 425 MPa has no thickness stated. This profile does not rank AA 7475 against other aluminium alloys because no other alloy's values were recorded here.
  compare_rows:
    - label: Density
      benchmark: density
    - label: Yield strength
      benchmark: yield_strength
    - label: Thermal conductivity
      benchmark: thermal_conductivity
  handling:
    - Machine in the annealed condition, which the mfgrobots article says works best for machining.
    - Get the supplier SDS for the exact stock form before machining, grinding or welding.
    - Stock forms printed on the supplier page are plate and sheet.
  good_for:
    - Plate and sheet where high strength matters in the 25.43 mm to 38.10 mm thickness band (minimum yield 414 MPa).
    - Aircraft and aerospace assemblies, as the mfgrobots article describes.
  watch_out:
    - Weldability is listed as poor by the supplier.
    - Stress-corrosion cracking is reported where tensile stress runs transverse to the grain structure.
    - The tensile values disagree between the supplier (510 MPa) and the article (495 MPa).
  verdict: AA 7475-T7351 is a high-strength plate and sheet alloy with stated aerospace uses, including aircraft fuselage panels and wing skins. The hazard entry rests on the PubChem component record for aluminium, not on an SDS for the alloy, and the gaps list says so.

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
Referans Metal, AlZn5.5MgCu 7475 T7351 (AMS 4202) product page, English	datasheet		20 values
MFG Robots article, AA 7475 (T7351) High-Toughness Aluminum Alloy	web		12 values
Mineral Commodity Summaries 2026, Aluminum	report	2026	1 value
Mineral Commodity Summaries 2026, Zinc	report	2026	1 value
Mineral Commodity Summaries 2026, Copper	report	2026	1 value
Mineral Commodity Summaries 2026, Chromium	report	2026	1 value
Aluminum, PubChem CID 5359268, GHS classification	database		2 values
Aluminium alloy, Wikipedia (7000-series table, composition and history only)	web		0 values

References
Identity
Formula	Wrought Al-Zn-Mg-Cu-Cr alloy, composition by weight per the mfgrobots AA 7475 (T7351) table: Al balance, Zn 5.2 to 6.2%, Mg 1.9 to 2.6%, Cu 1.2 to 1.9%, Cr 0.18 to 0.25%; Fe 0.12%, Si 0.1%, Mn 0.06% and Ti 0.06% are printed as single values. The article describes the alloy as derived from 7075.
Role	high-toughness wrought structural alloy (plate and sheet)
Benchmarks	23

References
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Updated 5 November 2026