Materials / Compare

Aluminum 6063-T6 vs. Aluminum 7050-T7451

Compare Aluminum 6063-T6 vs. Aluminum 7050-T7451 strength, stiffness, weight and thermal properties.

Aluminum 6063-T6Wrought
Aluminum 7050-T7451Wrought
MechanicalAluminum 6063-T6Aluminum 7050-T7451
Yield strength215MPa1469MPa22.18x stronger
Ultimate tensile strength240MPa1524MPa22.18x stronger
Elongation at break12%111%2
Young's modulus (stiffness)69GPa170.3GPa2
Density2,700kg/m³12,830kg/m³2
Strength to weight79.6kN·m/kg166kN·m/kg2.08x higher
Stiffness to weight25.6MN·m/kg3% higher24.8MN·m/kg
Poisson's rationot sourced0.333
Shear modulusnot sourced26.4GPa
Bulk modulusnot sourced68.9GPa
Speed of sound5,055m/s1% faster4,984m/s
1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 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 StandardSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcretePCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum 6063-T6Aluminum 7050-T7451
Stiffness against densityHigher and further left: stiffer for its weight
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 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 StandardSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Aluminum A380Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum 6063-T6Aluminum 7050-T7451
Strength against densityHigher and further left: stronger for its weight
ThermalAluminum 6063-T6Aluminum 7050-T7451
Thermal conductivity201W/m·K128% more heat through a fin157W/m·K2
Thermal expansion23.4µm/m·K123.5µm/m·K2
100 mm part over a 50 °C swing117µm growth118µm growth
Specific heat901J/kg·K4860J/kg·K2
Heats up and cools (diffusivity)82.6mm²/s28% faster64.5mm²/s
Thermal shock resistancenot sourced29,862W/m
Melting pointmelting range615–655°C1melting range524–635°C2
1k10k0.1110100Density (kg/m³)Thermal conductivity (W/m·K)Plastic PLAPlastic PETGPlastic ABSPlastic NylonRubberWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 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 HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcreteBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum 6063-T6Aluminum 7050-T7451
Thermal conductivity against densityHigher and further left: spreads more heat for its weight
0.111010010100Thermal conductivity (W/m·K)Thermal expansion (µm/m·K)Plastic PETGPlastic ABSPlastic NylonWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 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 HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcreteBrickPlywoodPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum 6063-T6Aluminum 7050-T7451
Thermal expansion against thermal conductivityLower and further right: warps less when heated
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Sources4 documents: Kaiser Aluminum, U.S. Department of Defense, Hydro
Aluminum 6063-T6
6063-T6 extruded tube, Kaiser Aluminum Tube & Pipe Alloy 6063 Technical Data (Rev. 05/06), typical properties; specific heat from Hydro EN AW-6063 extruded-products datasheet (Rev.4, 03/2023).
Aluminum 7050-T7451
7050-T7451 plate, Kaiser Aluminum sheet, coil & plate typical datasheet (longitudinal); Poisson from MIL-HDBK-5J
  1. 1
    Alloy 6063 Tube & Pipe Technical Data, Rev. 05/06Kaiser Aluminumarchived copyAluminum 6063-T6 · Yield strength: typical, T6, 0.0625 in specimenAluminum 6063-T6 · Ultimate tensile strength: typical, T6Aluminum 6063-T6 · Elongation at break: typical, T6, in 4DAluminum 6063-T6 · Young's modulus (stiffness): typicalAluminum 6063-T6 · Density: nominal, 20 °CAluminum 6063-T6 · Thermal conductivity: typical, T6, 20 °CAluminum 6063-T6 · Thermal expansion: typical, mean 20-100 °CAluminum 6063-T6 · Melting point: melting range
  2. 2
    Alloy 7050 Sheet, Coil & Plate Technical DataKaiser Aluminumarchived copyAluminum 7050-T7451 · Yield strength: typical, longitudinal, 0.2% offsetAluminum 7050-T7451 · Ultimate tensile strength: typical, longitudinalAluminum 7050-T7451 · Elongation at break: typical, longitudinalAluminum 7050-T7451 · Young's modulus (stiffness): typicalAluminum 7050-T7451 · Density: nominalAluminum 7050-T7451 · Thermal conductivity: typical, 20 °CAluminum 7050-T7451 · Thermal expansion: typical, mean 20-100 °CAluminum 7050-T7451 · Specific heat: typical, at 100 °CAluminum 7050-T7451 · Melting point: melting range
  3. 3
    MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures (2003)U.S. Department of DefenseAluminum 7050-T7451 · Poisson's ratio: typical (handbook physical constant)
  4. 4
    Technical Datasheet, Extruded Products: Alloy EN AW-6063 (Rev. 4, 2023)Hydroarchived copyAluminum 6063-T6 · Specific heat: typical, 20 °C (Hydro EN AW-6063)

Each number points to the document that states it, with the exact basis. Values without a number are computed from the sourced ones. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.

Questions

Mechanical

Is Aluminum 6063-T6 stronger than Aluminum 7050-T7451?

Aluminum 7050-T7451 is stronger: its yield strength is 469 MPa against 215 MPa for Aluminum 6063-T6 (2.18x).

Which is lighter, Aluminum 6063-T6 or Aluminum 7050-T7451?

Aluminum 6063-T6 is lighter: 2,700 kg/m³ against 2,830 kg/m³ for Aluminum 7050-T7451.

Which is stiffer, Aluminum 6063-T6 or Aluminum 7050-T7451?

Aluminum 7050-T7451 is stiffer: Young's modulus 70.3 GPa against 69 GPa for Aluminum 6063-T6, so the same part in Aluminum 7050-T7451 deflects less under the same load.

Which is lighter for the same job, Aluminum 6063-T6 or Aluminum 7050-T7451?

For the same stiffness or strength: Aluminum 6063-T6 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate; Aluminum 7050-T7451 is lighter for a strong rod or tie, strong beam, strong panel or plate.

Part that must beAluminum 6063-T6Aluminum 7050-T7451
Stiff rod or tie (tension)lighter3% heavier
Stiff beam (bending)lighter4% heavier
Stiff panel or platelighter4% heavier
Strong rod or tie2.08x heavierlighter
Strong beam1.6x heavierlighter
Strong panel or plate41% heavierlighter

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).

Thermal

Which conducts heat better, Aluminum 6063-T6 or Aluminum 7050-T7451?

Aluminum 6063-T6 conducts heat better: 201 W/m·K against 157 W/m·K for Aluminum 7050-T7451.

Which expands less with temperature?

Aluminum 6063-T6 expands less: 23.4 µm/m·K against 23.5 µm/m·K for Aluminum 7050-T7451.

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