{
  "spore": "profile",
  "id": "aluminium-alsi10mg",
  "spore_version": "0.2",
  "family": "aluminium-alloys",
  "name": "AlSi10Mg (additive manufacturing aluminium)",
  "abbreviation": "AlSi10Mg",
  "role": "structural alloy for laser powder bed fusion",
  "category": "metals",
  "type": "aluminium",
  "summary": "AlSi10Mg is an aluminium alloy with about 9 to 11 wt% silicon and 0.20 to 0.45 wt% magnesium, sold as powder for laser powder bed fusion printing; AddUp's sheet lists \"Si 9.0-11.0\" and \"Mg 0.20-0.45\" in its composition table. Printed parts from an AddUp FormUp 350 build reach a horizontal (XY) yield strength of 275 MPa as built and 232 MPa after stress relief, but only 5 % elongation as built. An EOS M 290 build of 30 µm layers, heat treated to T6, reaches a horizontal tensile strength of 320 MPa with 11 % elongation at break.\n",
  "best_for": "Printed load-bearing aluminium parts where light weight and strength matter and a T6 heat treatment is acceptable (EOS T6 gives 320 MPa tensile and 11 % elongation horizontal)",
  "weakest_at": "Ductility as built (5 % elongation in the AddUp XY direction), and strength that varies with build direction (239 MPa vertical against 275 MPa horizontal yield as built)",
  "identity": {
    "formula": "Aluminium alloy, Al balance with 9.0-11.0 wt% Si and 0.20-0.45 wt% Mg (AddUp composition table)",
    "designations": [
      {
        "system": "ASTM",
        "code": "F3318",
        "note": "specification for AlSi10Mg for additive manufacturing",
        "source": "addup-alsi10mg",
        "where": "First page, line stating the alloy chemical composition complies with ASTM F3318 and EN AC-43000"
      },
      {
        "system": "EN name",
        "code": "AC-43000",
        "source": "addup-alsi10mg",
        "where": "First page, same line as ASTM F3318"
      },
      {
        "system": "Trade name",
        "code": "EOS Aluminium AlSi10Mg",
        "source": "eos-alsi10mg",
        "where": "Title of the process data sheet, EOS Aluminium AlSi10Mg for EOS M 290 | 30 µm"
      }
    ],
    "source": "addup-alsi10mg",
    "where": "Chemical Composition table, rows Element and Weight (%); alloy name and EN AC-43000 / ASTM F3318 wording on the first page"
  },
  "tags": {
    "environments": [],
    "stresses": [],
    "applications": [
      "structures",
      "thermal-control"
    ]
  },
  "properties": [
    {
      "benchmark": "density",
      "label": "Density, EOS M 290 process (30 µm layers)",
      "value": 2.67,
      "bound": "lower",
      "unit": "g/cm3",
      "scope": "material",
      "conditions": {
        "process": "EOS M 290, 30 µm layer, EOS AlSi10Mg powder",
        "temperature": "not stated",
        "measure": "EN ISO 3369, average density",
        "printed": "≥ 2.67 g/cm³"
      },
      "method": "Lower bound printed in a process data sheet; the sheet gives no sample count for this row",
      "status": "ground",
      "source": "eos-alsi10mg",
      "where": "Density EN ISO 3369 table, row 30 µm, column Average Density",
      "source_detail": {
        "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
        "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
        "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
        "year": 2026,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "thermal_conductivity",
      "label": "Thermal conductivity, as manufactured, horizontal direction",
      "value": 110,
      "bound": "exact",
      "unit": "W/m*K",
      "scope": "material",
      "conditions": {
        "process": "EOS M 290, 30 µm, as manufactured (no heat treatment)",
        "orientation": "horizontal",
        "temperature": "not stated",
        "unit_in_source": "W/m*K"
      },
      "method": "Value printed in a process data sheet; test standard EN ISO 22007-2",
      "status": "ground",
      "source": "eos-alsi10mg",
      "where": "Thermal Conductivity table, row As Manufactured, Horizontal",
      "source_detail": {
        "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
        "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
        "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
        "year": 2026,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "thermal_conductivity",
      "label": "Thermal conductivity, T6 heat treated, horizontal direction",
      "value": 155,
      "bound": "exact",
      "unit": "W/m*K",
      "scope": "material",
      "conditions": {
        "process": "EOS M 290, 30 µm, EOS T6 heat treatment",
        "orientation": "horizontal",
        "temperature": "not stated",
        "unit_in_source": "W/m*K"
      },
      "method": "Value printed in a process data sheet; test standard EN ISO 22007-2",
      "status": "ground",
      "note": "The same table prints further orientation and condition rows for thermal conductivity; only the horizontal rows are recorded here.",
      "source": "eos-alsi10mg",
      "where": "Thermal Conductivity table, row Heat Treated, Horizontal, and EOS T6 heat treatment block",
      "source_detail": {
        "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
        "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
        "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
        "year": 2026,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "electrical_conductivity",
      "label": "Typical electrical conductivity, as manufactured, horizontal",
      "value": 25,
      "bound": "exact",
      "unit": "%IACS",
      "scope": "material",
      "conditions": {
        "process": "EOS M 290, 30 µm, as manufactured",
        "orientation": "horizontal",
        "unit_in_source": "%IACS"
      },
      "method": "Typical value printed in a process data sheet; test standard ASTM E1004-17",
      "status": "ground",
      "source": "eos-alsi10mg",
      "where": "Electrical Conductivity table, row As Manufactured, Horizontal",
      "source_detail": {
        "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
        "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
        "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
        "year": 2026,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "electrical_conductivity",
      "label": "Typical electrical conductivity, T6 heat treated, horizontal",
      "value": 44,
      "bound": "exact",
      "unit": "%IACS",
      "scope": "material",
      "conditions": {
        "process": "EOS M 290, 30 µm, EOS T6 heat treatment",
        "orientation": "horizontal",
        "unit_in_source": "%IACS"
      },
      "method": "Typical value printed in a process data sheet; test standard ASTM E1004-17",
      "status": "ground",
      "source": "eos-alsi10mg",
      "where": "Electrical Conductivity table, row Heat Treated, Horizontal, and EOS T6 heat treatment block",
      "source_detail": {
        "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
        "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
        "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
        "year": 2026,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "elastic_modulus",
      "label": "Modulus of elasticity, as built, horizontal (XY)",
      "value": 72,
      "bound": "exact",
      "unit": "GPa",
      "scope": "material",
      "conditions": {
        "process": "AddUp FormUp 350, 50 µm layers, 20-63 µm powder",
        "condition": "as built",
        "direction": "horizontal (XY)",
        "printed": "72±3",
        "machined": "yes, before testing"
      },
      "method": "Mean printed with ± spread in a manufacturer data sheet (ASTM E8, minimum 27 samples across the build plate)",
      "status": "ground",
      "source": "addup-alsi10mg",
      "where": "Mechanical Properties (cont.), row Modulus of Elasticity, Horizontal direction (XY), As-built column",
      "source_detail": {
        "title": "AddUp Material Data Sheet, AlSi10Mg (FormUp 350, version US-10252023-0129)",
        "url": "https://addupsolutions.com/wp-content/uploads/2023/10/AlSi10Mg-Material-Data-Sheet.pdf",
        "year": 2023,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "elastic_modulus",
      "label": "Modulus of elasticity, stress relieved, horizontal (XY)",
      "value": 77,
      "bound": "exact",
      "unit": "GPa",
      "scope": "material",
      "conditions": {
        "process": "AddUp FormUp 350, 50 µm layers",
        "condition": "stress relieved",
        "direction": "horizontal (XY)",
        "printed": "77±4",
        "heat_treatment": "stress relieved at 210°C for 2 hours in air (AddUp footnote 7)"
      },
      "method": "Mean printed with ± spread in a manufacturer data sheet (ASTM E8)",
      "status": "ground",
      "source": "addup-alsi10mg",
      "where": "Mechanical Properties (cont.), row Modulus of Elasticity, Horizontal direction (XY), Stress relieved column",
      "source_detail": {
        "title": "AddUp Material Data Sheet, AlSi10Mg (FormUp 350, version US-10252023-0129)",
        "url": "https://addupsolutions.com/wp-content/uploads/2023/10/AlSi10Mg-Material-Data-Sheet.pdf",
        "year": 2023,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "yield_strength",
      "label": "Yield strength, as built, horizontal (XY)",
      "value": 275,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "process": "AddUp FormUp 350, 50 µm layers",
        "condition": "as built",
        "direction": "horizontal (XY)",
        "printed": "275±8",
        "measure": "ASTM E8"
      },
      "method": "Mean printed with ± spread in a manufacturer data sheet",
      "status": "ground",
      "source": "addup-alsi10mg",
      "where": "Mechanical Properties, row Yield strength (MPa), Horizontal direction (XY), As-built column",
      "source_detail": {
        "title": "AddUp Material Data Sheet, AlSi10Mg (FormUp 350, version US-10252023-0129)",
        "url": "https://addupsolutions.com/wp-content/uploads/2023/10/AlSi10Mg-Material-Data-Sheet.pdf",
        "year": 2023,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "yield_strength",
      "label": "Yield strength, as built, vertical (Z)",
      "value": 239,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "process": "AddUp FormUp 350, 50 µm layers",
        "condition": "as built",
        "direction": "vertical (Z)",
        "printed": "239±3",
        "measure": "ASTM E8"
      },
      "method": "Mean printed with ± spread in a manufacturer data sheet",
      "status": "ground",
      "note": "The vertical value is 36 MPa below the horizontal value (275 MPa), which shows the build direction effect in the same sheet.",
      "source": "addup-alsi10mg",
      "where": "Mechanical Properties, row Yield strength (MPa), Vertical direction (Z), As-built column",
      "source_detail": {
        "title": "AddUp Material Data Sheet, AlSi10Mg (FormUp 350, version US-10252023-0129)",
        "url": "https://addupsolutions.com/wp-content/uploads/2023/10/AlSi10Mg-Material-Data-Sheet.pdf",
        "year": 2023,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "yield_strength",
      "label": "Yield strength, stress relieved, horizontal (XY)",
      "value": 232,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "process": "AddUp FormUp 350, 50 µm layers",
        "condition": "stress relieved at 210°C for 2 hours in air",
        "direction": "horizontal (XY)",
        "printed": "232±2"
      },
      "method": "Mean printed with ± spread in a manufacturer data sheet",
      "status": "ground",
      "source": "addup-alsi10mg",
      "where": "Mechanical Properties, row Yield strength (MPa), Horizontal direction (XY), Stress relieved column",
      "source_detail": {
        "title": "AddUp Material Data Sheet, AlSi10Mg (FormUp 350, version US-10252023-0129)",
        "url": "https://addupsolutions.com/wp-content/uploads/2023/10/AlSi10Mg-Material-Data-Sheet.pdf",
        "year": 2023,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "yield_strength",
      "label": "Yield strength, T6 heat treated, horizontal",
      "value": 260,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "process": "EOS M 290, 30 µm, EOS T6 (solution 530 °C for 30 minutes, water quench, ageing 165 °C for 6 hours)",
        "condition": "T6 heat treated",
        "direction": "horizontal",
        "test": "EN ISO 6892-1, room temperature, machined turned samples"
      },
      "method": "Value printed in a process data sheet; the same sheet defines T99 as a lower-bound tolerance interval, and the table does not say which rows carry that label",
      "status": "ground",
      "source": "eos-alsi10mg",
      "where": "Mechanical Properties Heat Treated table, row Horizontal, column Yield Strength [MPa]",
      "source_detail": {
        "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
        "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
        "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
        "year": 2026,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "ultimate_tensile_strength",
      "label": "Tensile strength, as built, horizontal (XY)",
      "value": 412,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "process": "AddUp FormUp 350, 50 µm layers",
        "condition": "as built",
        "direction": "horizontal (XY)",
        "printed": "412±38",
        "measure": "ASTM E8"
      },
      "method": "Mean printed with ± spread in a manufacturer data sheet",
      "status": "ground",
      "source": "addup-alsi10mg",
      "where": "Mechanical Properties, row Tensile strength (MPa), Horizontal direction (XY), As-built column",
      "source_detail": {
        "title": "AddUp Material Data Sheet, AlSi10Mg (FormUp 350, version US-10252023-0129)",
        "url": "https://addupsolutions.com/wp-content/uploads/2023/10/AlSi10Mg-Material-Data-Sheet.pdf",
        "year": 2023,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "ultimate_tensile_strength",
      "label": "Tensile strength, stress relieved, horizontal (XY)",
      "value": 363,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "process": "AddUp FormUp 350, 50 µm layers",
        "condition": "stress relieved at 210°C for 2 hours in air",
        "direction": "horizontal (XY)",
        "printed": "363±7"
      },
      "method": "Mean printed with ± spread in a manufacturer data sheet",
      "status": "ground",
      "source": "addup-alsi10mg",
      "where": "Mechanical Properties, row Tensile strength (MPa), Horizontal direction (XY), Stress relieved column",
      "source_detail": {
        "title": "AddUp Material Data Sheet, AlSi10Mg (FormUp 350, version US-10252023-0129)",
        "url": "https://addupsolutions.com/wp-content/uploads/2023/10/AlSi10Mg-Material-Data-Sheet.pdf",
        "year": 2023,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "ultimate_tensile_strength",
      "label": "Tensile strength, T6 heat treated, horizontal",
      "value": 320,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "process": "EOS M 290, 30 µm, EOS T6 heat treatment",
        "condition": "T6 heat treated",
        "direction": "horizontal",
        "test": "EN ISO 6892-1, room temperature"
      },
      "method": "Value printed in a process data sheet; same T99 labelling caveat as the T6 yield row",
      "status": "ground",
      "source": "eos-alsi10mg",
      "where": "Mechanical Properties Heat Treated table, row Horizontal, column Tensile Strength [MPa]",
      "source_detail": {
        "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
        "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
        "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
        "year": 2026,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "elongation",
      "label": "Elongation at failure, as built, horizontal (XY)",
      "value": 5,
      "bound": "exact",
      "unit": "%",
      "scope": "material",
      "conditions": {
        "process": "AddUp FormUp 350, 50 µm layers",
        "condition": "as built",
        "direction": "horizontal (XY)",
        "printed": "5±2"
      },
      "method": "Mean printed with ± spread in a manufacturer data sheet (ASTM E8)",
      "status": "ground",
      "source": "addup-alsi10mg",
      "where": "Mechanical Properties, row Elongation at failure (%), Horizontal direction (XY), As-built column",
      "source_detail": {
        "title": "AddUp Material Data Sheet, AlSi10Mg (FormUp 350, version US-10252023-0129)",
        "url": "https://addupsolutions.com/wp-content/uploads/2023/10/AlSi10Mg-Material-Data-Sheet.pdf",
        "year": 2023,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "elongation",
      "label": "Elongation at failure, stress relieved, horizontal (XY)",
      "value": 7,
      "bound": "exact",
      "unit": "%",
      "scope": "material",
      "conditions": {
        "process": "AddUp FormUp 350, 50 µm layers",
        "condition": "stress relieved at 210°C for 2 hours in air",
        "direction": "horizontal (XY)",
        "printed": "7±2"
      },
      "method": "Mean printed with ± spread in a manufacturer data sheet (ASTM E8)",
      "status": "ground",
      "source": "addup-alsi10mg",
      "where": "Mechanical Properties, row Elongation at failure (%), Horizontal direction (XY), Stress relieved column",
      "source_detail": {
        "title": "AddUp Material Data Sheet, AlSi10Mg (FormUp 350, version US-10252023-0129)",
        "url": "https://addupsolutions.com/wp-content/uploads/2023/10/AlSi10Mg-Material-Data-Sheet.pdf",
        "year": 2023,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "elongation",
      "label": "Elongation at break A, T6 heat treated, horizontal",
      "value": 11,
      "bound": "exact",
      "unit": "%",
      "scope": "material",
      "conditions": {
        "process": "EOS M 290, 30 µm, EOS T6 heat treatment",
        "condition": "T6 heat treated",
        "direction": "horizontal",
        "test": "EN ISO 6892-1, room temperature"
      },
      "method": "Value printed in a process data sheet; same T99 labelling caveat as the T6 yield row",
      "status": "ground",
      "source": "eos-alsi10mg",
      "where": "Mechanical Properties Heat Treated table, row Horizontal, column Elongation at Break A [%]",
      "source_detail": {
        "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
        "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
        "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
        "year": 2026,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "hardness_brinell",
      "label": "Brinell hardness HBW 2.5/62.5, as manufactured",
      "value": 114,
      "bound": "exact",
      "unit": "HBW",
      "scope": "material",
      "conditions": {
        "process": "EOS M 290, 30 µm, as manufactured",
        "test": "EN ISO 6506, HBW 2.5/62.5"
      },
      "method": "Value printed in a process data sheet; hardness_brinell is not in the canonical property list",
      "status": "ground",
      "source": "eos-alsi10mg",
      "where": "Hardness table, EN ISO 6506 As Manufactured, Value",
      "source_detail": {
        "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
        "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
        "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
        "year": 2026,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "hardness_brinell",
      "label": "Brinell hardness HBW 2.5/62.5, T6 heat treated",
      "value": 105,
      "bound": "exact",
      "unit": "HBW",
      "scope": "material",
      "conditions": {
        "process": "EOS M 290, 30 µm, EOS T6 heat treatment",
        "test": "EN ISO 6506, HBW 2.5/62.5"
      },
      "method": "Value printed in a process data sheet; hardness_brinell is not in the canonical property list",
      "status": "ground",
      "source": "eos-alsi10mg",
      "where": "Hardness table, EN ISO 6506 Heat Treated, Value",
      "source_detail": {
        "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
        "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
        "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
        "year": 2026,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    },
    {
      "benchmark": "fatigue_strength",
      "label": "Fatigue strength, as manufactured, 20 million cycles",
      "value": 110,
      "bound": "exact",
      "unit": "MPa",
      "scope": "material",
      "conditions": {
        "process": "EOS M 290, 30 µm, as manufactured (no heat treatment)",
        "cycles": "20 million",
        "test": "ASTM E466-15, turned, fully reversed",
        "sample": "machined vertical and horizontal samples"
      },
      "method": "Value printed in a process data sheet; the sheet notes aluminium alloys have no fatigue limit, so the figure depends on geometry and surface finish",
      "status": "ground",
      "source": "eos-alsi10mg",
      "where": "Fatigue table, As Manufactured, footnote HCF ASTM E466-15, 20 million cycles",
      "source_detail": {
        "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
        "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
        "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
        "year": 2026,
        "kind": "datasheet",
        "license": "Manufacturer data sheet (cited, not reproduced)"
      }
    }
  ],
  "corrosion": [
    {
      "environment": "Chloride solution, 0.1 M NaCl (laboratory electrochemistry)",
      "headline": "A 2021 study of SLM AlSi10Mg tests as-built and polished surfaces in 0.1 M NaCl, but its printed text gives no corrosion potential or current density.",
      "effect": "Frontiers in Chemical Engineering (2021) tested as-built and polished SLM AlSi10Mg in 0.1 M NaCl, and applied a stress-relieved heat treatment of 573 K for 2 h. The numerical polarisation results are in supplementary material that was not read, so no corrosion rate is recorded for this profile.",
      "rating": "unknown",
      "conditions": {
        "electrolyte": "0.1 M NaCl",
        "specimen": "SLM AlSi10Mg, as-built, stress-relieved and polished",
        "exposure": "electrochemical tests and 10 days immersion in 0.1 M NaCl at room temperature"
      },
      "source": "frontiers-slm",
      "where": "Methods, electrochemical measurements and Table 1 surface conditions"
    },
    {
      "environment": "Manufacturer general statement on corrosion",
      "headline": "AddUp describes AlSi10Mg as offering high corrosion resistance, but gives no test data for that claim.",
      "effect": "The AddUp sheet says the alloy 'offers high corrosion resistance and thermal conductivity'. The sheet gives no salt-spray, immersion or atmospheric test result, so the claim is recorded as a manufacturer statement only.",
      "rating": "unknown",
      "conditions": {
        "basis": "manufacturer statement, no test conditions printed"
      },
      "source": "addup-alsi10mg",
      "where": "General Material and Process Specification paragraph, first paragraph"
    }
  ],
  "risks": {
    "hazards": [
      {
        "text": "Aluminium (the element, as the metal powder basis of AlSi10Mg) is flammable in powder form and reacts with water to release flammable gas. PubChem prints H228 (flammable solid), H250 (catches fire spontaneously if exposed to air) and H261 (in contact with water releases flammable gas) for aluminium, with signal word Danger. The AlSi10Mg powder sheet itself was not read for its own hazard statements.",
        "ghs": [
          "H228",
          "H250",
          "H261"
        ],
        "source": "pubchem-al",
        "where": "GHS Classification section, GHS Hazard Statements and Signal"
      }
    ],
    "failure_risks": [
      {
        "mode": "Low ductility as built",
        "trigger": "Part used in the as-built condition under tensile load in the horizontal direction",
        "consequence": "The AddUp sheet gives 5±2 % elongation at failure as built, against 7±2 % after stress relief, so the as-built part has little stretch before fracture.",
        "severity": "moderate",
        "source": "addup-alsi10mg",
        "where": "Mechanical Properties, row Elongation at failure, Horizontal direction (XY)"
      },
      {
        "mode": "Build direction strength loss",
        "trigger": "Load carried in the vertical (Z) direction of the build",
        "consequence": "Yield strength as built is 239±3 MPa vertical against 275±8 MPa horizontal in the AddUp sheet. The sheet does not give a fatigue or fracture result by direction.",
        "severity": "low",
        "source": "addup-alsi10mg",
        "where": "Mechanical Properties, row Yield strength, Vertical and Horizontal rows"
      }
    ],
    "side_effects": [],
    "handling": [
      {
        "text": "Specify the heat treatment with the part. The EOS sheet describes T6 as solution annealing and artificial ageing, and gives different tensile and yield values as built and after T6.",
        "source": "eos-alsi10mg",
        "where": "EOS T6 Heat Treatment block and the As Manufactured and Heat Treated mechanical tables"
      },
      {
        "text": "The AddUp sheet states that the stress relief specimens were held at 210°C for 2 hours in air before testing.",
        "source": "addup-alsi10mg",
        "where": "Footnote 7 under the Mechanical Properties table"
      }
    ],
    "mitigations": []
  },
  "uses": [
    {
      "application": "structures",
      "device": "Laser powder bed fusion load-bearing parts",
      "example": "AddUp says AlSi10Mg offers good strength and dynamic properties with high weldability, and is suitable for load-bearing components; the sheet states it is widely used in the aerospace and automotive industries.",
      "source": "addup-alsi10mg",
      "where": "General Material and Process Specification paragraph"
    },
    {
      "application": "thermal-control",
      "device": "Printed heat-spreading or heat-exchanger parts",
      "example": "EOS prints a thermal conductivity of 110 W/m*K horizontal as built and 155 W/m*K horizontal after T6 for its AlSi10Mg process.",
      "source": "eos-alsi10mg",
      "where": "Thermal Conductivity table"
    }
  ],
  "supply": [
    {
      "subject": "Aluminium smelter production (for the metal used in AlSi10Mg)",
      "producers": [
        {
          "country": "China",
          "year": 2025
        },
        {
          "country": "Russia",
          "year": 2025
        },
        {
          "country": "Canada",
          "year": 2025
        },
        {
          "country": "India",
          "year": 2025
        },
        {
          "country": "United States",
          "year": 2025
        }
      ],
      "critical_lists": [],
      "recycling": "USGS: aluminum recovered from purchased scrap in the United States was about 3.6 million tons in 2025, of which about 56% came from new scrap and 44% from old scrap.",
      "substitutes": [
        "USGS: Copper can replace aluminum in electrical and heat-exchange applications. Composites, magnesium, steel and titanium can substitute for aluminum in ground transportation uses."
      ],
      "source": "usgs-mcs2026-aluminum",
      "where": "World Smelter Production table, column 2025e (thousand tons, world total rounded 74,000); Recycling; Substitutes"
    }
  ],
  "media": [],
  "documents": [
    {
      "title": "AddUp Material Data Sheet, AlSi10Mg (FormUp 350, version US-10252023-0129)",
      "type": "datasheet",
      "url": "https://addupsolutions.com/wp-content/uploads/2023/10/AlSi10Mg-Material-Data-Sheet.pdf",
      "year": 2023
    },
    {
      "title": "EOS Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
      "type": "datasheet",
      "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
      "year": 2026
    },
    {
      "title": "USGS Mineral Commodity Summaries 2026: Aluminum",
      "type": "report",
      "url": "https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-aluminum.pdf",
      "year": 2026
    },
    {
      "title": "PubChem compound record: Aluminum (CID 5359268), GHS classification and molecular weight",
      "type": "database",
      "url": "https://pubchem.ncbi.nlm.nih.gov/compound/Aluminum"
    },
    {
      "title": "Frontiers in Chemical Engineering, 2021, SLM AlSi10Mg corrosion study (DOI 10.3389/fceng.2021.734644)",
      "type": "paper",
      "url": "https://www.frontiersin.org/journals/chemical-engineering/articles/10.3389/fceng.2021.734644/full",
      "year": 2021
    },
    {
      "title": "VDI 3405 Blatt 2.1, Material data sheet aluminium alloy AlSi10Mg (PBF-LB/M), 2020-08",
      "type": "standard",
      "url": "https://vdi.de/en/home/vdi-standards/details/vdi-3405-blatt-21-additive-manufacturing-processes-powder-bed-fusion-of-metal-with-laser-beam-pbf-lbm-material-data-sheet-aluminium-alloy-alsi10mg",
      "year": 2020
    }
  ],
  "gaps": [
    "The coefficient of thermal expansion is not recorded: the EOS sheet prints the values as '20*10 -6 /K', an exponent form that the verification cannot match, so the three temperature rows were left out.",
    "AddUp's 'Generic Data' rows (thermal conductivity 120-160 W/m.k, melting range 550-600 °C, electrical resistivity, and coefficient of thermal expansion 21) are labelled as literature data and not as this grade's own results, so they are not recorded as properties.",
    "AddUp's theoretical density of 2.67 g/cm3 is marked as based on literature values, so it is not recorded; the EOS lower bound of 2.67 g/cm3 is used instead.",
    "The numerical corrosion results (potentials, current densities, polarisation resistance) of the 2021 SLM AlSi10Mg study are in supplementary material that was not read, and the text prints no rates.",
    "No NASA, ESA or flight data for AlSi10Mg was found in the sources read; no space flight environment is tagged.",
    "The USGS 2026 aluminum summary text extracted here does not show a critical minerals list entry for aluminium, so no critical-minerals row is recorded.",
    "The EOS gas tightness value (printed as '10*6 mbar l/s') uses an exponent-style print and is left out.",
    "The EOS T6 table does not say which rows carry the T99 tolerance label; the values are recorded as printed with that caveat in the method.",
    "UNS and AA numbers for AlSi10Mg were not printed in the sources read, so they are not listed as designations.",
    "The EOS and AddUp sheets use different machines and layer thicknesses (M 290 at 30 µm, FormUp 350 at 50 µm); the values are not directly comparable.",
    "Hardness is recorded under hardness_brinell, which is not in the canonical property list.",
    "Radiation, outgassing and atomic-oxygen data for AlSi10Mg were not looked up.",
    "VDI 3405 Blatt 2.1 (2020-08), the material data sheet standard for AlSi10Mg, was read for its title, coverage and date only; its page prints no property values, so no values are recorded from it. Its test values were not reachable on the page."
  ],
  "story": {
    "why": "AlSi10Mg is an aluminium alloy with silicon and magnesium added, chosen because it prints well in laser powder bed fusion. AddUp's sheet lists \"Si 9.0-11.0\" and \"Mg 0.20-0.45\" in its composition table, and it describes the alloy as suitable for load-bearing parts. In a horizontal direction as built it has a yield strength of 275±8 MPa and a tensile strength of 412±38 MPa, but elongation of only 5±2 %. EOS's T6 heat treatment raises the horizontal elongation to 11 % and gives a tensile strength of 320 MPa.",
    "uses": [
      {
        "where": "Load-bearing printed parts",
        "line": "AddUp describes the alloy as suitable for load-bearing components requiring low weight and high strength, and says it is widely used in the aerospace and automotive industries."
      },
      {
        "where": "Heat-conducting parts",
        "line": "EOS prints a thermal conductivity of 110 W/m*K horizontal as manufactured, and 155 W/m*K horizontal after T6 heat treatment."
      }
    ],
    "can_do": [
      {
        "label": "Carry load as a printed part",
        "line": "horizontal yield strength 275±8 MPa and tensile strength 412±38 MPa as built (AddUp, ASTM E8).",
        "scope": "material"
      },
      {
        "label": "Conduct heat",
        "line": "155 W/m*K horizontal after EOS T6 heat treatment, against 110 W/m*K as manufactured.",
        "scope": "material"
      },
      {
        "label": "Stay light",
        "line": "density at least 2.67 g/cm3 in the EOS 30 µm process (EN ISO 3369).",
        "scope": "material"
      },
      {
        "label": "Carry electricity poorly",
        "line": "25 %IACS typical as manufactured and 44 %IACS after T6, horizontal, per EOS.",
        "scope": "material"
      }
    ],
    "compare": "In the AddUp sheet the as-built horizontal yield strength is 275±8 MPa and the vertical value is 239±3 MPa, so build direction changes strength by more than the stated spreads. EOS's T6 heat treatment gives 260 MPa yield and 320 MPa tensile horizontal, with elongation of 11 %, which is a different heat-treated state from the AddUp stress-relieved values. The two sheets use different builds (FormUp 350 at 50 µm and EOS M 290 at 30 µm), so compare them as examples of the process and heat treatment, not as one grade on one machine.",
    "compare_rows": [
      {
        "label": "Density",
        "benchmark": "density",
        "scope": "material"
      },
      {
        "label": "Yield strength",
        "benchmark": "yield_strength",
        "scope": "material"
      },
      {
        "label": "Elongation",
        "benchmark": "elongation",
        "scope": "material"
      }
    ],
    "handling": [
      "Specify the heat treatment with the part, since as-built, stress-relieved and T6 values differ.",
      "Name the build direction: the vertical yield strength is lower than the horizontal one in the AddUp data."
    ],
    "good_for": [
      "Light printed structures that need high yield strength as built: 275±8 MPa horizontal (AddUp).",
      "Heat-conducting parts that can be T6 heat treated: 155 W/m*K horizontal (EOS)."
    ],
    "watch_out": [
      "As built, the horizontal elongation is only 5±2 % (AddUp), so brittle failure is a risk for unheated parts.",
      "Strength depends on build direction and heat treatment; quote the condition with every number.",
      "No corrosion rate was recorded: the 0.1 M NaCl study prints no numerical result in its text."
    ],
    "verdict": "AlSi10Mg is a printable, lightweight aluminium alloy whose strength depends on build direction and heat treatment. As built it is strong but brittle, and T6 gives the best elongation. This profile has no printed corrosion rate and no space flight data.",
    "recipe": {
      "line": "AlSi10Mg is an aluminium-silicon-magnesium alloy made as spherical powder (20-63 µm in the AddUp sheet) that is melted layer by layer in a laser powder bed fusion machine. The composition is the AddUp table: aluminium balance, silicon 9.0-11.0 wt%, magnesium 0.20-0.45 wt%, and small amounts of iron, manganese, titanium and others.",
      "parts": [
        {
          "name": "Aluminium",
          "symbol": "Al",
          "role": "Matrix metal, the balance of the alloy per the AddUp composition table."
        },
        {
          "name": "Silicon",
          "symbol": "Si",
          "role": "Alloying element named in the alloy designation (AlSi10Mg), 9.0-11.0 wt% per the AddUp composition table."
        },
        {
          "name": "Magnesium",
          "symbol": "Mg",
          "role": "Alloying element named in the alloy designation (AlSi10Mg), 0.20-0.45 wt% per the AddUp composition table."
        }
      ]
    },
    "risk_groups": [
      {
        "title": "For people",
        "lead": "The hazard codes in the sources belong to aluminium metal and powder, not to the printed AlSi10Mg part.",
        "points": [
          {
            "label": "Powder form",
            "line": "PubChem's record for aluminium lists H228, H250 and H261 with signal word Danger, including catching fire spontaneously in air and releasing flammable gas in contact with water."
          }
        ],
        "level": 1,
        "verdict": "Powder is flammable"
      },
      {
        "title": "If it fails",
        "lead": "These are the failure routes the sources support, and none of them is a measured fatigue or fracture result for this alloy.",
        "points": [
          {
            "label": "Brittle as built",
            "line": "In the AddUp sheet the as-built part elongates 5±2 % in the horizontal direction, against 7±2 % after stress relief."
          },
          {
            "label": "Build direction",
            "line": "Yield strength as built is 239±3 MPa vertical and 275±8 MPa horizontal, so the vertical direction is the weaker one."
          }
        ]
      },
      {
        "title": "Handling and storage",
        "points": [
          {
            "label": "Specify the condition",
            "line": "The strength of the same alloy changes with heat treatment: 275±8 MPa yield as built, 232±2 MPa after stress relief, and 260 MPa yield after EOS T6."
          }
        ]
      }
    ]
  },
  "updated": "2026-11-01",
  "review": {
    "status": "draft",
    "method": "assistant",
    "checked_values": 20,
    "unreachable": 0,
    "caveats": 4,
    "note": "Values read by an AI assistant on 2026-11-01 from the AddUp and EOS PDFs and pages, and the USGS 2026 aluminum summary. Corrosion data are qualitative only. The EOS T99 tolerance caveat applies to its heat-treated rows."
  },
  "sources": {
    "addup-alsi10mg": {
      "title": "AddUp Material Data Sheet, AlSi10Mg (FormUp 350, version US-10252023-0129)",
      "url": "https://addupsolutions.com/wp-content/uploads/2023/10/AlSi10Mg-Material-Data-Sheet.pdf",
      "year": 2023,
      "kind": "datasheet",
      "license": "Manufacturer data sheet (cited, not reproduced)"
    },
    "eos-alsi10mg": {
      "title": "Process Data Sheet, EOS Aluminium AlSi10Mg for EOS M 290, 30 µm (status 01.11.2026)",
      "id": "EOS powder product no. 9011-0024; ASTM F3318-18 and DIN EN 1706 (EN AC-43000) compliance",
      "url": "https://www.eos.info/metal-solutions/data-sheets/aluminium/pds-eos-aluminium-alsi10mg-eos-m-290-30um",
      "year": 2026,
      "kind": "datasheet",
      "license": "Manufacturer data sheet (cited, not reproduced)"
    },
    "usgs-mcs2026-aluminum": {
      "title": "Mineral Commodity Summaries 2026, Aluminum",
      "url": "https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-aluminum.pdf",
      "year": 2026,
      "kind": "report",
      "license": "public domain (USGS)"
    },
    "pubchem-al": {
      "title": "PubChem compound record: Aluminum (CID 5359268)",
      "id": "CID 5359268",
      "url": "https://pubchem.ncbi.nlm.nih.gov/compound/Aluminum",
      "kind": "database",
      "license": "PubChem (NCBI), public domain; GHS data attributed to ECHA and others"
    },
    "pubchem-si": {
      "title": "PubChem compound record: Silicon (CID 5461123), molecular weight",
      "id": "CID 5461123",
      "url": "https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/silicon/property/MolecularWeight,Title/JSON",
      "kind": "database",
      "license": "PubChem (NCBI), public domain"
    },
    "pubchem-mg": {
      "title": "PubChem compound record: Magnesium (CID 5462224), molecular weight",
      "id": "CID 5462224",
      "url": "https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/magnesium/property/MolecularWeight,Title/JSON",
      "kind": "database",
      "license": "PubChem (NCBI), public domain"
    },
    "frontiers-slm": {
      "title": "Frontiers in Chemical Engineering, 2021: SLM AlSi10Mg corrosion and PEO coating study (DOI 10.3389/fceng.2021.734644)",
      "id": "DOI 10.3389/fceng.2021.734644",
      "url": "https://www.frontiersin.org/journals/chemical-engineering/articles/10.3389/fceng.2021.734644/full",
      "year": 2021,
      "kind": "paper",
      "license": "Open access (cited, not reproduced)"
    },
    "vdi-3405-2-1": {
      "title": "VDI 3405 Blatt 2.1, Material data sheet aluminium alloy AlSi10Mg (PBF-LB/M), 2020-08",
      "url": "https://vdi.de/en/home/vdi-standards/details/vdi-3405-blatt-21-additive-manufacturing-processes-powder-bed-fusion-of-metal-with-laser-beam-pbf-lbm-material-data-sheet-aluminium-alloy-alsi10mg",
      "year": 2020,
      "kind": "standard",
      "license": "VDI standard page (cited, not reproduced)"
    }
  },
  "license": "CC-BY-4.0",
  "url": "https://spacemushroom.com/profiles/aluminium-alsi10mg/"
}