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Aluminum 7050-T7451 vs. DMLS AlSi10Mg Aluminum

Compare Aluminum 7050-T7451 vs. DMLS AlSi10Mg Aluminum strength, stiffness, weight and thermal properties.

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Aluminum 7050-T7451Wrought
DMLS AlSi10Mg Aluminum3D printed metal (DMLS)
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Mechanical
Yield strength469MPasourcetypical, longitudinal, 0.2% offset270MPasourcetypical, as manufactured, horizontal
Ultimate tensile strength524MPasourcetypical, longitudinal450MPasourcetypical, as manufactured, horizontal
Elongation at break11%sourcetypical, longitudinal10.2%sourcetypical at break, as manufactured, horizontal
Young's modulus (stiffness)70.3GPasourcetypical72GPasourcesame material and process, different machine maker: Renishaw RenAM 500, 30 µm, as built, horizontal (XY)
Density2,830kg/m³sourcenominal2,670kg/m³sourcetypical part density (ISO 3369), EOS M 290, AlSi10Mg_030_FlexM291 (30 µm)
Strength to weight166kN·m/kg1.64x higher101kN·m/kg
Stiffness to weight24.8MN·m/kg27MN·m/kg9% higher
Poisson's ratio0.33sourcetypical (handbook physical constant)0.33sourcebase material: cast Al-Si-Mg alloy 359.0 (Al-9Si-0.6Mg, closest MIL-HDBK-5J alloy to AlSi10Mg / EN AC-43000)
Shear modulus26.4GPa27.1GPa2% stiffer in shear
Bulk modulus68.9GPa70.6GPa
Speed of sound4,984m/s5,193m/s
Thermal
Thermal conductivity157W/m·Ksourcetypical, 20 °C110W/m·Ksourcetypical, as manufactured, horizontal (ISO 22007-2)
Thermal expansion23.5µm/m·Ksourcetypical, mean 20-100 °C20µm/m·Ksourcemean 25-100 °C, ASTM E228
100 mm part over a 50 °C swing118µm growth100µm growth18% less
Specific heat860J/kg·Ksourcetypical, at 100 °C963J/kg·Ksourcebase material: cast Al-Si-Mg alloy 359.0 (MIL-HDBK-5J), at 100 °C
Heats up and cools (diffusivity)64.5mm²/s1.51x faster42.8mm²/s
Thermal shock resistance29,862W/m2.16x more resistant13,819W/m
Melting point524–635°Csourcemelting rangenot sourced
Values for7050-T7451 plate, Kaiser Aluminum sheet, coil & plate typical datasheet (longitudinal); Poisson from MIL-HDBK-5JEOS Aluminium AlSi10Mg (powder 9011-0024), EOS M 290 | 30 µm process (AlSi10Mg_FlexM291 2.01), as manufactured, horizontal; machined (turned) specimens, ISO 6892-1 B10

Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.

DMLS AlSi10Mg Aluminum is 3D printed: its properties depend on build direction and print settings; these are typical values.

Questions

Is Aluminum 7050-T7451 stronger than DMLS AlSi10Mg Aluminum?

Aluminum 7050-T7451 is stronger: its yield strength is 469 MPa against 270 MPa for DMLS AlSi10Mg Aluminum (1.74x).

Which is lighter, Aluminum 7050-T7451 or DMLS AlSi10Mg Aluminum?

DMLS AlSi10Mg Aluminum is lighter: 2,670 kg/m³ against 2,830 kg/m³ for Aluminum 7050-T7451.

Which is stiffer, Aluminum 7050-T7451 or DMLS AlSi10Mg Aluminum?

DMLS AlSi10Mg Aluminum is stiffer: Young's modulus 72 GPa against 70.3 GPa for Aluminum 7050-T7451, so the same part in DMLS AlSi10Mg Aluminum deflects less under the same load.

Which is lighter for the same job, Aluminum 7050-T7451 or DMLS AlSi10Mg Aluminum?

For the same stiffness or strength: Aluminum 7050-T7451 is lighter for a strong rod or tie, strong beam, strong panel or plate; DMLS AlSi10Mg Aluminum is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate.

Part that must beAluminum 7050-T7451DMLS AlSi10Mg Aluminum
Stiff rod or tie (tension)9% heavierlighter
Stiff beam (bending)7% heavierlighter
Stiff panel or plate7% heavierlighter
Strong rod or tielighter1.64x heavier
Strong beamlighter36% heavier
Strong panel or platelighter24% heavier

For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).

Which conducts heat better, Aluminum 7050-T7451 or DMLS AlSi10Mg Aluminum?

Aluminum 7050-T7451 conducts heat better: 157 W/m·K against 110 W/m·K for DMLS AlSi10Mg Aluminum.

Which expands less with temperature?

DMLS AlSi10Mg Aluminum expands less: 20 µm/m·K against 23.5 µm/m·K for Aluminum 7050-T7451.

Among 59 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless 304Stainless 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless 303Stainless 17-4PHAluminum 2024-T351Aluminum 5052-H32Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLS PA12 NylonDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelAluminum 7050-T7451DMLS AlSi10Mg Aluminum
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberAluminumSteelIronTitaniumSteel AISI 1018Stainless 304Stainless 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless 303Stainless 17-4PHAluminum 2024-T351Aluminum 5052-H32Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickAluminum 7050-T7451DMLS AlSi10Mg Aluminum
Strength against density

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