{
  "spore": "profile",
  "id": "aluminium-a206",
  "spore_version": "0.2",
  "family": "aluminium-alloys",
  "name": "Aluminium casting alloy A206.0",
  "abbreviation": "A206.0",
  "role": "structural casting alloy",
  "category": "metals",
  "type": "aluminium",
  "summary": "Aluminium casting alloy A206.0 is an aluminium-copper casting alloy with 4.2 to 5.0 % copper, per the SAE chemical composition table. An aggregator page reads a tensile strength of 440.0 MPa and a yield strength of 350.0 MPa for the T7 condition, and 275.0 to 345.0 MPa tensile for the T4 condition. The SAE physical properties table gives a density of 2.6 to 2.9 kg/dm3 and an elastic modulus of 69 to 79 GPa. No flight, vacuum or radiation result for this alloy was found.\n",
  "best_for": "Structural castings in the heat-treated temper, cast in sand or permanent molds (ASM and eFunda describe these uses)",
  "weakest_at": "Ductility: the SAE table prints a minimum elongation of 1.5 % (at least 1.5 %), and no alloy-specific corrosion or weldability test was found",
  "identity": {
    "formula": "Al-Cu-Mg-Mn-Ti casting alloy. SAE composition (Total Materia): copper 4.2 to 5.0 %, iron 0.10 % maximum, aluminium the remainder. Nominal composition per the eFunda 206.0 page (weight %): aluminium 94.33 %, copper 4.60 %, magnesium 0.25 %, manganese 0.35 %, silicon 0.10 %, titanium 0.22 %, iron 0.15 %. The two iron figures disagree and both are kept.",
    "designations": [
      {
        "system": "UNS",
        "code": "A02060",
        "source": "totalmateria-a206",
        "where": "International Equivalent Materials table, UNS row, marked Official"
      },
      {
        "system": "UNS",
        "code": "A12060",
        "note": "second UNS number printed by the same source for this alloy; sources disagree on the UNS number",
        "source": "totalmateria-a206",
        "where": "International Equivalent Materials table, UNS row"
      },
      {
        "system": "AA",
        "code": "A206.0",
        "source": "totalmateria-a206",
        "where": "International Equivalent Materials table, AA row"
      },
      {
        "system": "AMS",
        "code": "AMS4235",
        "note": "specification AMS4235A, title names the A206.0-T71 temper",
        "source": "saemobilus-ams4235a",
        "where": "Page title, AMS4235A Aluminum Alloy Castings, 4.6Cu - 0.35Mn - 0.25Mg - 0.22Ti (A206.0-T71)"
      }
    ],
    "source": "totalmateria-a206",
    "where": "SAE A206.0 Chemical Composition table (Cu 4.2 to 5.0 %, Fe 0.10 % maximum); nominal composition from the eFunda 206.0 page (efunda-206)"
  },
  "tags": {
    "environments": [],
    "stresses": [],
    "applications": [
      "structures"
    ]
  },
  "properties": [
    {
      "benchmark": "density",
      "label": "Density, A206.0 (SAE physical properties)",
      "value": 2.6,
      "value_high": 2.9,
      "bound": "exact",
      "unit": "kg/dm3",
      "scope": "material",
      "conditions": {
        "temperature": "0 to 30 °C (table header)",
        "temper": "not shown in the free view of the page"
      },
      "method": "Range printed in the Total Materia physical properties table as 2.6 — 2.9 kg/dm³",
      "status": "ground",
      "source": "totalmateria-a206",
      "where": "SAE A206.0 Physical Properties table, Density row",
      "source_detail": {
        "title": "SAE A206.0 Aluminium Alloys (Total Materia material page)",
        "id": "Total Materia material 3017082; latest update 2023-05",
        "url": "https://www.totalmateria.com/en-us/material/3017082",
        "year": 2023,
        "kind": "database",
        "license": "Total Materia free view (cited, not reproduced)"
      }
    },
    {
      "benchmark": "elastic_modulus",
      "label": "Modulus of elasticity, A206.0 (SAE physical properties)",
      "value": 69,
      "value_high": 79,
      "bound": "exact",
      "unit": "GPa",
      "scope": "material",
      "conditions": {
        "temperature": "0 to 30 °C (table header)",
        "temper": "not shown in the free view of the page"
      },
      "method": "Range printed in the Total Materia physical properties table as 69 — 79 GPa",
      "status": "ground",
      "source": "totalmateria-a206",
      "where": "SAE A206.0 Physical Properties table, Modulus of Elasticity row",
      "source_detail": {
        "title": "SAE A206.0 Aluminium Alloys (Total Materia material page)",
        "id": "Total Materia material 3017082; latest update 2023-05",
        "url": "https://www.totalmateria.com/en-us/material/3017082",
        "year": 2023,
        "kind": "database",
        "license": "Total Materia free view (cited, not reproduced)"
      }
    },
    {
      "benchmark": "ultimate_tensile_strength",
      "label": "Tensile strength, A206.0 (SAE mechanical properties, minimum)",
      "value": 310,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "minimum": "printed as ≥ 310 MPa",
        "temperature": "0 to 30 °C (table header)",
        "temper": "not shown in the free view of the page"
      },
      "method": "Minimum printed in the Total Materia mechanical properties table; the temper is not shown in the free view",
      "status": "ground",
      "source": "totalmateria-a206",
      "where": "SAE A206.0 Mechanical Properties table, Tensile Strength row",
      "source_detail": {
        "title": "SAE A206.0 Aluminium Alloys (Total Materia material page)",
        "id": "Total Materia material 3017082; latest update 2023-05",
        "url": "https://www.totalmateria.com/en-us/material/3017082",
        "year": 2023,
        "kind": "database",
        "license": "Total Materia free view (cited, not reproduced)"
      }
    },
    {
      "benchmark": "brinell_hardness",
      "label": "Brinell hardness, A206.0 (SAE mechanical properties)",
      "value": 85,
      "value_high": 135,
      "bound": "exact",
      "unit": "HB",
      "scope": "material",
      "conditions": {
        "temperature": "0 to 30 °C (table header)",
        "temper": "not shown in the free view of the page"
      },
      "method": "Range printed in the Total Materia mechanical properties table as 85 — 135 for Brinell Hardness (HB); brinell_hardness is not yet in the property canon",
      "status": "ground",
      "source": "totalmateria-a206",
      "where": "SAE A206.0 Mechanical Properties table, Brinell Hardness (HB) row",
      "source_detail": {
        "title": "SAE A206.0 Aluminium Alloys (Total Materia material page)",
        "id": "Total Materia material 3017082; latest update 2023-05",
        "url": "https://www.totalmateria.com/en-us/material/3017082",
        "year": 2023,
        "kind": "database",
        "license": "Total Materia free view (cited, not reproduced)"
      }
    },
    {
      "benchmark": "elongation",
      "label": "Elongation, A206.0 (SAE mechanical properties, minimum)",
      "value": 1.5,
      "bound": "exact",
      "unit": "%",
      "scope": "material",
      "conditions": {
        "minimum": "printed as ≥ 1.5 %",
        "temperature": "0 to 30 °C (table header)",
        "temper": "not shown in the free view of the page"
      },
      "method": "Minimum printed in the Total Materia mechanical properties table as Elongation, A",
      "status": "ground",
      "source": "totalmateria-a206",
      "where": "SAE A206.0 Mechanical Properties table, Elongation, A row",
      "source_detail": {
        "title": "SAE A206.0 Aluminium Alloys (Total Materia material page)",
        "id": "Total Materia material 3017082; latest update 2023-05",
        "url": "https://www.totalmateria.com/en-us/material/3017082",
        "year": 2023,
        "kind": "database",
        "license": "Total Materia free view (cited, not reproduced)"
      }
    },
    {
      "benchmark": "ultimate_tensile_strength",
      "label": "Tensile strength, A206.0 T7 (aggregator page)",
      "value": 440,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "temper": "T7, as labelled on the page",
        "note": "the page does not say whether the value is typical or a minimum"
      },
      "method": "Value on an aggregator page labelled T7; not a manufacturer datasheet",
      "status": "ground",
      "source": "mfgrobots-t7",
      "where": "Mechanical table, Tensile strength row, T7",
      "source_detail": {
        "title": "AA 206.0 T7 Aluminum Alloy: Comprehensive Mechanical & Thermal Properties (MfgRobots)",
        "id": "MfgRobots material article 34105",
        "url": "https://www.mfgrobots.com/Article/material/metal/34105.html",
        "kind": "web",
        "license": "web page, cited not reproduced"
      }
    },
    {
      "benchmark": "yield_strength",
      "label": "Yield strength, A206.0 T7 (aggregator page)",
      "value": 350,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "temper": "T7, as labelled on the page",
        "note": "the page does not say whether the value is typical or a minimum"
      },
      "method": "Value on an aggregator page labelled T7; not a manufacturer datasheet",
      "status": "ground",
      "source": "mfgrobots-t7",
      "where": "Mechanical table, Yield strength row, T7",
      "source_detail": {
        "title": "AA 206.0 T7 Aluminum Alloy: Comprehensive Mechanical & Thermal Properties (MfgRobots)",
        "id": "MfgRobots material article 34105",
        "url": "https://www.mfgrobots.com/Article/material/metal/34105.html",
        "kind": "web",
        "license": "web page, cited not reproduced"
      }
    },
    {
      "benchmark": "elongation",
      "label": "Elongation, A206.0 T7 (aggregator page, printed as 12.0 %)",
      "value": 12,
      "bound": "exact",
      "unit": "%",
      "scope": "material",
      "conditions": {
        "temper": "T7, as labelled on the page",
        "note": "the page does not say whether the value is typical or a minimum"
      },
      "method": "Value on an aggregator page labelled T7; not a manufacturer datasheet",
      "status": "ground",
      "source": "mfgrobots-t7",
      "where": "Mechanical table, Elongation row, T7",
      "source_detail": {
        "title": "AA 206.0 T7 Aluminum Alloy: Comprehensive Mechanical & Thermal Properties (MfgRobots)",
        "id": "MfgRobots material article 34105",
        "url": "https://www.mfgrobots.com/Article/material/metal/34105.html",
        "kind": "web",
        "license": "web page, cited not reproduced"
      }
    },
    {
      "benchmark": "melting_point",
      "label": "Melting point, A206.0 (aggregator page)",
      "value": 570,
      "bound": "exact",
      "unit": "°C",
      "scope": "material",
      "conditions": {
        "temper": "T7, as labelled on the page",
        "note": "a single value is printed; an alloy normally melts over a range"
      },
      "method": "Value on an aggregator page labelled T7; not a manufacturer datasheet",
      "status": "ground",
      "source": "mfgrobots-t7",
      "where": "Thermal table, Melting point row, T7",
      "source_detail": {
        "title": "AA 206.0 T7 Aluminum Alloy: Comprehensive Mechanical & Thermal Properties (MfgRobots)",
        "id": "MfgRobots material article 34105",
        "url": "https://www.mfgrobots.com/Article/material/metal/34105.html",
        "kind": "web",
        "license": "web page, cited not reproduced"
      }
    },
    {
      "benchmark": "thermal_conductivity",
      "label": "Thermal conductivity, A206.0 T7 (aggregator page)",
      "value": 120,
      "bound": "exact",
      "unit": "W/(m·K)",
      "scope": "material",
      "conditions": {
        "temper": "T7, as labelled on the page",
        "temperature": "not stated on the page"
      },
      "method": "Value on an aggregator page labelled T7; not a manufacturer datasheet",
      "status": "ground",
      "source": "mfgrobots-t7",
      "where": "Thermal table, Thermal conductivity row, T7",
      "source_detail": {
        "title": "AA 206.0 T7 Aluminum Alloy: Comprehensive Mechanical & Thermal Properties (MfgRobots)",
        "id": "MfgRobots material article 34105",
        "url": "https://www.mfgrobots.com/Article/material/metal/34105.html",
        "kind": "web",
        "license": "web page, cited not reproduced"
      }
    },
    {
      "benchmark": "specific_heat",
      "label": "Specific heat capacity, A206.0 T7 (aggregator page)",
      "value": 920,
      "bound": "exact",
      "unit": "J/(kg·K)",
      "scope": "material",
      "conditions": {
        "temper": "T7, as labelled on the page",
        "temperature": "not stated on the page"
      },
      "method": "Value on an aggregator page labelled T7; not a manufacturer datasheet",
      "status": "ground",
      "source": "mfgrobots-t7",
      "where": "Thermal table, Specific heat capacity row, T7",
      "source_detail": {
        "title": "AA 206.0 T7 Aluminum Alloy: Comprehensive Mechanical & Thermal Properties (MfgRobots)",
        "id": "MfgRobots material article 34105",
        "url": "https://www.mfgrobots.com/Article/material/metal/34105.html",
        "kind": "web",
        "license": "web page, cited not reproduced"
      }
    },
    {
      "benchmark": "ultimate_tensile_strength",
      "label": "Tensile strength, A206.0 T4 (aggregator page, range)",
      "value": 275,
      "value_high": 345,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "temper": "T4, as labelled on the page",
        "note": "the page prints a range and does not say whether it is typical or a minimum"
      },
      "method": "Range on an aggregator page labelled T4; not a manufacturer datasheet",
      "status": "ground",
      "source": "mfgrobots-t4",
      "where": "Mechanical table, Tensile strength row, T4",
      "source_detail": {
        "title": "AA 206.0 T4 Aluminum Alloy: Key Mechanical Properties & Performance (MfgRobots)",
        "id": "MfgRobots material article 36730",
        "url": "https://www.mfgrobots.com/Article/material/metal/36730.html",
        "kind": "web",
        "license": "web page, cited not reproduced"
      }
    },
    {
      "benchmark": "yield_strength",
      "label": "Yield strength, A206.0 T4 (aggregator page, range)",
      "value": 165,
      "value_high": 193,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "temper": "T4, as labelled on the page",
        "note": "the page prints a range and does not say whether it is typical or a minimum"
      },
      "method": "Range on an aggregator page labelled T4; not a manufacturer datasheet",
      "status": "ground",
      "source": "mfgrobots-t4",
      "where": "Mechanical table, Yield strength row, T4",
      "source_detail": {
        "title": "AA 206.0 T4 Aluminum Alloy: Key Mechanical Properties & Performance (MfgRobots)",
        "id": "MfgRobots material article 36730",
        "url": "https://www.mfgrobots.com/Article/material/metal/36730.html",
        "kind": "web",
        "license": "web page, cited not reproduced"
      }
    },
    {
      "benchmark": "elongation",
      "label": "Elongation, A206.0 T4 (aggregator page, range printed as 6.0 to 10.0 %)",
      "value": 6,
      "value_high": 10,
      "bound": "exact",
      "unit": "%",
      "scope": "material",
      "conditions": {
        "temper": "T4, as labelled on the page",
        "note": "the page prints a range and does not say whether it is typical or a minimum"
      },
      "method": "Range on an aggregator page labelled T4; not a manufacturer datasheet",
      "status": "ground",
      "source": "mfgrobots-t4",
      "where": "Mechanical table, Elongation row, T4",
      "source_detail": {
        "title": "AA 206.0 T4 Aluminum Alloy: Key Mechanical Properties & Performance (MfgRobots)",
        "id": "MfgRobots material article 36730",
        "url": "https://www.mfgrobots.com/Article/material/metal/36730.html",
        "kind": "web",
        "license": "web page, cited not reproduced"
      }
    }
  ],
  "corrosion": [
    {
      "environment": "Waters containing chloride or other halogen ions",
      "headline": "No A206.0 corrosion test was found. The 1972 NASA handbook says chloride waters pit aluminium, but it does not test this alloy.",
      "effect": "The handbook says pitting attack occurs in waters containing chloride or other halogen ions, particularly at crevices or stagnant areas, and that aluminium purity significantly affects corrosion resistance. It also says traces of copper, iron and mercury ions promote localized attack by galvanic cells. Those are copper ions in solution, not the copper in this alloy, and the handbook gives no result for A206.0.",
      "rating": "unknown",
      "conditions": {
        "basis": "general statements about aluminium in a 1972 NASA handbook; no A206.0 test",
        "alloy": "A206.0 is not discussed in the passage read"
      },
      "source": "nasa-cr123772",
      "where": "Chapter 10 (aluminium), aqueous corrosion passage"
    },
    {
      "environment": "Contact with more noble metals in a conductive liquid (galvanic coupling), especially sea water",
      "headline": "The NASA handbook calls galvanic attack on aluminium severe. It is a general statement, not a test of A206.0.",
      "effect": "The handbook says aluminum is strongly anodic to most other common metals, so galvanic coupling with them generally produces severe attack on the aluminum, especially in sea water.",
      "rating": "severe",
      "conditions": {
        "basis": "general statement about aluminium in a 1972 NASA handbook; not alloy-specific",
        "alloy": "A206.0 is not tested"
      },
      "source": "nasa-cr123772",
      "where": "Chapter 10 (aluminium), aqueous corrosion passage"
    }
  ],
  "risks": {
    "hazards": [
      {
        "text": "PubChem's aluminium record carries the GHS statement H261, 'In contact with water releases flammable gas', under a Danger signal word. The record does not say which aluminium form it applies to, and no safety data sheet for the A206.0 casting alloy was read.",
        "ghs": [
          "H261"
        ],
        "source": "pubchem-al",
        "where": "GHS Classification section of PubChem CID 5359268"
      }
    ],
    "failure_risks": [
      {
        "mode": "Galvanic attack when the casting touches more noble metals in a conductive liquid",
        "trigger": "Contact with more noble metals, especially in sea water",
        "consequence": "The NASA handbook says galvanic coupling generally produces severe attack on the aluminum, especially in sea water.",
        "severity": "high",
        "source": "nasa-cr123772",
        "where": "Chapter 10 (aluminium), aqueous corrosion passage"
      },
      {
        "mode": "Pitting in chloride-containing water",
        "trigger": "Waters containing chloride or other halogen ions, particularly at crevices or stagnant areas",
        "consequence": "The NASA handbook says pitting attack occurs in such waters, where passivity breakdown is accelerated by differential aeration.",
        "severity": "moderate",
        "source": "nasa-cr123772",
        "where": "Chapter 10 (aluminium), aqueous corrosion passage"
      }
    ],
    "side_effects": [],
    "handling": [
      {
        "text": "Keep the casting insulated from more noble metals where it may be wet or in sea water, because the NASA handbook calls aluminum strongly anodic to most other common metals.",
        "source": "nasa-cr123772",
        "where": "Chapter 10 (aluminium), aqueous corrosion passage"
      }
    ],
    "mitigations": []
  },
  "uses": [
    {
      "application": "structures",
      "device": "Heat-treated structural castings",
      "example": "ASM's alloy digest abstract says 206.0 and A206.0 are structural castings in the heat treated temper for applications requiring high; the public abstract stops at that point.",
      "source": "asm-al335",
      "where": "Abstract, first sentence (the full datasheet is behind a subscription)"
    },
    {
      "application": "structures",
      "device": "Aerospace casting specification (SAE AMS4235A)",
      "example": "SAE AMS4235A covers an aluminum alloy in the form of sand, permanent mold, and composite mold castings, and its title names the A206.0-T71 temper.",
      "source": "saemobilus-ams4235a",
      "where": "Abstract scope statement and page title"
    },
    {
      "application": "structures",
      "device": "Sand and permanent-mold castings",
      "example": "eFunda says the alloy is usually used in sand casting and permanent mold casting.",
      "source": "efunda-206",
      "where": "Description paragraph of the 206.0 glossary page"
    }
  ],
  "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 (European Commission page, which says 'Aluminium and bauxite have been merged for consistency reasons')",
          "listed": true
        }
      ],
      "recycling": "USGS: aluminum recovered from purchased scrap in the United States was about 3.6 million tons in 2025.",
      "substitutes": [],
      "source": "usgs-mcs2026-aluminum",
      "where": "World Smelter Production table, 2025e (world total 74,000 thousand t; shares calculated by Space Mushroom); Recycling. The critical list line is from the EC page (ec-crm)."
    }
  ],
  "media": [],
  "documents": [
    {
      "title": "Total Materia: SAE A206.0 aluminium alloy properties (chemical composition, physical, mechanical, equivalents)",
      "type": "database",
      "url": "https://www.totalmateria.com/en-us/material/3017082",
      "year": 2023
    },
    {
      "title": "NASA CR-123772 (1972), aluminium corrosion chapter",
      "type": "report",
      "url": "https://ntrs.nasa.gov/citations/19720022808",
      "year": 1972
    },
    {
      "title": "PubChem: aluminium (CID 5359268), GHS classification",
      "type": "database",
      "url": "https://pubchem.ncbi.nlm.nih.gov/compound/5359268",
      "year": 2026
    },
    {
      "title": "USGS Mineral Commodity Summaries 2026: Aluminum",
      "type": "report",
      "url": "https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-aluminum.pdf",
      "year": 2026
    }
  ],
  "gaps": [
    "No EN or DIN number for A206.0 was printed in a source read in this run. ICAST's EN AC-21100 sheet describes a different Al-Cu grade with its own composition, so it is not treated as the same alloy.",
    "The Total Materia values for density, modulus, tensile strength, Brinell hardness and elongation do not show the temper in the free view. The page header gives only 0 to 30 °C.",
    "The T7 and T4 values come from aggregator pages, not a manufacturer datasheet. Their figures are kept with their labels and not confirmed against a second source.",
    "A second aggregator density figure disagrees with the SAE range and is not recorded.",
    "Coefficient of thermal expansion and electrical resistivity are printed with exponents on the aggregator page, so they are left out.",
    "The full ASM Alloy Digest datasheet (composition, physical and mechanical tables) is behind a subscription and was not readable; only its abstract was read.",
    "The AMS4235A page is an abstract only: no minimum mechanical values were printed, so none are recorded from that source.",
    "Iron content disagrees between the SAE table (0.10 % maximum) and the eFunda nominal (0.15 %). Both are kept in the identity.",
    "No corrosion, stress-corrosion or weldability test for A206.0 was found. The corrosion rating is unknown, and the galvanic rating comes from a general statement about aluminium.",
    "No flight, vacuum, thermal-cycling or radiation result for A206.0 was found.",
    "The USGS critical-minerals page could not be read in this run, so no USGS list status is recorded for aluminium.",
    "No safety data sheet for the A206.0 casting alloy was read. Dust and fume hazards are not recorded.",
    "The shear, fatigue and high-temperature properties of A206.0 were not found in a source read in this run."
  ],
  "story": {
    "why": "A206.0 is an aluminium-copper casting alloy used for structural castings in the heat-treated temper. Copper is its main alloying element, and the SAE table prints 4.2 to 5.0 % copper. The same table gives a tensile minimum of 310 MPa, and an aggregator page gives 440.0 MPa for the T7 temper. The density and modulus in the SAE table let the stiffness-to-weight case be checked against printed numbers.",
    "uses": [
      {
        "where": "Structural castings",
        "line": "The ASM alloy digest abstract says 206.0 and A206.0 are structural castings in the heat treated temper for applications requiring high. The public abstract stops at that point, so the full application list was not read."
      },
      {
        "where": "Aerospace casting specification",
        "line": "SAE AMS4235A covers this aluminium alloy in sand, permanent mold and composite mold castings. Its title names the A206.0-T71 temper."
      },
      {
        "where": "Sand and permanent-mold foundry",
        "line": "eFunda says the alloy is usually used in sand casting and permanent mold casting."
      }
    ],
    "can_do": [
      {
        "label": "Strength",
        "line": "Reach a tensile strength of 440.0 MPa in the T7 temper, per an aggregator page (not a minimum).",
        "scope": "material"
      },
      {
        "label": "Strength",
        "line": "Stay stiff, with an elastic modulus of 69 to 79 GPa at 0 to 30 °C, per the SAE table.",
        "scope": "material"
      },
      {
        "label": "Strength",
        "line": "Give a Brinell hardness of 85 to 135 HB at 0 to 30 °C, per the SAE table.",
        "scope": "material"
      }
    ],
    "compare": "A206.0 is a casting alloy, so its strength depends on copper content and heat treatment. The SAE table prints a tensile minimum of 310 MPa and an elongation minimum of 1.5 %, while the aggregator T7 values are 440.0 MPa and 12.0 %. The T4 range on the aggregator page, 275.0 to 345.0 MPa tensile, is lower than the T7 value, which shows the effect of the temper. No other profile is used here for the comparison, so each figure is read from its own source.",
    "compare_rows": [
      {
        "label": "Density",
        "benchmark": "density",
        "scope": "material"
      },
      {
        "label": "Elastic modulus",
        "benchmark": "elastic_modulus",
        "scope": "material"
      },
      {
        "label": "Tensile strength (T7 aggregator value)",
        "benchmark": "ultimate_tensile_strength",
        "scope": "material"
      }
    ],
    "handling": [
      "Keep the casting insulated from more noble metals where it may be wet or in sea water, because the NASA handbook calls aluminum strongly anodic to most other common metals.",
      "The alloy's safety data sheet was not read, so no dust or fume limits are given here."
    ],
    "good_for": [
      "Heat-treated structural castings where tensile strength matters: 440.0 MPa in T7, per an aggregator page.",
      "Sand and permanent-mold castings, which eFunda gives as the usual route."
    ],
    "watch_out": [
      "Ductility: the SAE table prints a minimum elongation of 1.5 %, and the T4 aggregator range is 6.0 to 10.0 %.",
      "Corrosion in chloride or sea water: no A206.0 test was found, and the NASA handbook calls galvanic attack severe.",
      "Thermal conductivity and specific heat come from a single aggregator page, so check them before design."
    ],
    "verdict": "A206.0 is a strength-first casting alloy whose tensile figures are documented in the SAE and aggregator tables. No source read here shows its corrosion or ductility in service.",
    "recipe": {
      "line": "Aluminium casting alloy of the Al-Cu type. Aluminium is the matrix, with copper (4.2 to 5.0 %, SAE) as the main alloying element and small manganese, magnesium, titanium and silicon additions. The SAE data sheet prints a solution and precipitation heat treatment for the alloy.",
      "parts": [
        {
          "name": "Aluminium",
          "symbol": "Al",
          "role": "The matrix of the alloy.",
          "share_note": "balance (the rest)"
        },
        {
          "name": "Copper",
          "symbol": "Cu",
          "role": "Main alloying element; this makes it an Al-Cu casting alloy.",
          "share_percent": 4.2,
          "share_high": 5
        },
        {
          "name": "Manganese",
          "symbol": "Mn",
          "role": "Minor addition.",
          "share_percent": 0.35,
          "share_note": "nominal, per eFunda"
        },
        {
          "name": "Magnesium",
          "symbol": "Mg",
          "role": "Minor addition.",
          "share_percent": 0.25,
          "share_note": "nominal, per eFunda"
        },
        {
          "name": "Titanium",
          "symbol": "Ti",
          "role": "Minor addition.",
          "share_percent": 0.22,
          "share_note": "nominal, per eFunda"
        },
        {
          "name": "Silicon",
          "symbol": "Si",
          "role": "Minor addition.",
          "share_percent": 0.1,
          "share_note": "nominal, per eFunda"
        },
        {
          "name": "Iron",
          "symbol": "Fe",
          "role": "Impurity kept within a maximum.",
          "share_note": "maximum 0.10 % (SAE); nominal 0.15 % (eFunda)"
        }
      ]
    },
    "risk_groups": [
      {
        "title": "For people",
        "lead": "No safety data sheet for the A206.0 casting alloy was read. The only hazard entry is a PubChem record for aluminium, which carries a water-reactivity statement that does not clearly apply to solid castings.",
        "points": [
          {
            "label": "Hazard statement",
            "line": "PubChem's aluminium record lists H261, 'In contact with water releases flammable gas', under a Danger signal word."
          },
          {
            "label": "Dust and fume",
            "line": "No source read in this run covers dust or fume for this alloy."
          }
        ],
        "level": 0,
        "verdict": "No hazard class found for the alloy"
      },
      {
        "title": "Galvanic contact in water",
        "lead": "The NASA handbook says aluminium corrodes first when coupled to more noble metals in a conductive liquid.",
        "points": [
          {
            "label": "Sea water",
            "line": "The handbook says galvanic coupling generally produces severe attack on the aluminum, especially in sea water."
          },
          {
            "label": "Chloride water",
            "line": "The same handbook says pitting occurs in waters containing chloride or other halogen ions."
          }
        ],
        "verdict": "Severe attack when coupled to noble metals"
      }
    ]
  },
  "updated": "2026-11-01",
  "review": {
    "status": "draft",
    "method": "assistant",
    "checked_values": 14,
    "unreachable": 3,
    "caveats": 4,
    "note": "Written by an AI assistant on 2026-11-01 from pages read in this run. Aggregator values are labelled as such; the full ASM and SAE texts were not readable."
  },
  "sources": {
    "totalmateria-a206": {
      "title": "SAE A206.0 Aluminium Alloys (Total Materia material page)",
      "id": "Total Materia material 3017082; latest update 2023-05",
      "url": "https://www.totalmateria.com/en-us/material/3017082",
      "year": 2023,
      "kind": "database",
      "license": "Total Materia free view (cited, not reproduced)"
    },
    "mfgrobots-t7": {
      "title": "AA 206.0 T7 Aluminum Alloy: Comprehensive Mechanical & Thermal Properties (MfgRobots)",
      "id": "MfgRobots material article 34105",
      "url": "https://www.mfgrobots.com/Article/material/metal/34105.html",
      "kind": "web",
      "license": "web page, cited not reproduced"
    },
    "mfgrobots-t4": {
      "title": "AA 206.0 T4 Aluminum Alloy: Key Mechanical Properties & Performance (MfgRobots)",
      "id": "MfgRobots material article 36730",
      "url": "https://www.mfgrobots.com/Article/material/metal/36730.html",
      "kind": "web",
      "license": "web page, cited not reproduced"
    },
    "efunda-206": {
      "title": "eFunda Glossary: Aluminum Alloy 206.0",
      "id": "eFunda glossary, cast aluminium 206.0",
      "url": "https://www.efunda.com/glossary/materials/alloys/materials--alloys--aluminum_alloy--cast--206.0.cfm",
      "kind": "web",
      "license": "web page, cited not reproduced"
    },
    "asm-al335": {
      "title": "Aluminum Alloy 206.0, A206.0 Premium Casting Alloy (ASM Alloy Digest AL-335)",
      "id": "ASM Alloy Digest AL-335",
      "url": "https://dl.asminternational.org/alloy-digest/article/44/6/Al-335/5844/ALUMINUM-ALLOY-206-0-A206-0Premium-Casting-Alloy",
      "kind": "datasheet",
      "license": "ASM subscription, abstract cited"
    },
    "saemobilus-ams4235a": {
      "title": "AMS4235A Aluminum Alloy Castings, 4.6Cu - 0.35Mn - 0.25Mg - 0.22Ti (A206.0-T71) Solution and Precipitation Heat Treated",
      "id": "SAE AMS4235A",
      "url": "https://saemobilus.sae.org/content/AMS4235A/",
      "kind": "standard",
      "license": "SAE subscription, abstract cited"
    },
    "nasa-cr123772": {
      "title": "NASA CR-123772 (1972), aluminium handbook including Chapter 10 on corrosion",
      "id": "NTRS 19720022808",
      "url": "https://ntrs.nasa.gov/citations/19720022808",
      "year": 1972,
      "kind": "report",
      "license": "public domain (NASA)"
    },
    "pubchem-al": {
      "title": "PubChem compound record, aluminium (CID 5359268)",
      "id": "CID 5359268",
      "url": "https://pubchem.ncbi.nlm.nih.gov/compound/5359268",
      "year": 2026,
      "kind": "database",
      "license": "public domain (NCBI)"
    },
    "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)"
    },
    "ec-crm": {
      "title": "Critical raw materials (European Commission, list under Regulation (EU) 2024/1252)",
      "id": "Regulation (EU) 2024/1252",
      "url": "https://single-market-economy.ec.europa.eu/sectors/raw-materials/areas-specific-interest/critical-raw-materials_en",
      "year": 2024,
      "kind": "web",
      "license": "European Commission web page"
    }
  },
  "license": "CC-BY-4.0",
  "url": "https://spacemushroom.com/profiles/aluminium-a206/"
}