Materials / Compare

Aluminum 2024-T351 vs. Aluminum 7075-T6

Compare Aluminum 2024-T351 vs. Aluminum 7075-T6 strength, stiffness, weight and thermal properties.

Aluminum 2024-T351Wrought
Aluminum 7075-T6Wrought
MechanicalAluminum 2024-T351Aluminum 7075-T6
Yield strength324MPa1503MPa21.55x stronger
Ultimate tensile strength469MPa1572MPa222% stronger
Elongation at break19%11.73x more ductile11%2
Young's modulus (stiffness)73.1GPa171GPa2
Density2,770kg/m³12,800kg/m³3
Strength to weight117kN·m/kg180kN·m/kg1.54x higher
Stiffness to weight26.4MN·m/kg4% higher25.4MN·m/kg
Poisson's ratio0.3340.334
Shear modulus27.5GPa3% stiffer in shear26.7GPa
Bulk modulus71.7GPa3% higher69.6GPa
Speed of sound5,137m/s2% faster5,036m/s
1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 5052-H32Aluminum 7050-T7451Titanium 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 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum 2024-T351Aluminum 7075-T6
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-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 5052-H32Aluminum 7050-T7451Titanium 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 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum 2024-T351Aluminum 7075-T6
Strength against densityHigher and further left: stronger for its weight
ThermalAluminum 2024-T351Aluminum 7075-T6
Thermal conductivity120W/m·K1130W/m·K3
Thermal expansion22.9µm/m·K123.4µm/m·K3
100 mm part over a 50 °C swing115µm growth2% less117µm growth
Specific heat875J/kg·K1960J/kg·K3
Heats up and cools (diffusivity)49.5mm²/s2% faster48.4mm²/s
Thermal shock resistance15,561W/m26,370W/m1.69x more resistant
Melting pointmelting range502–638°C1melting range532–635°C3
1k10k0.1110100Density (kg/m³)Thermal conductivity (W/m·K)Plastic PLAPlastic PETGPlastic ABSPlastic NylonRubberWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 5052-H32Aluminum 7050-T7451Titanium 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 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum 2024-T351Aluminum 7075-T6
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-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 5052-H32Aluminum 7050-T7451Titanium 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 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum 2024-T351Aluminum 7075-T6
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
Aluminum 2024-T351
2024-T4/T351, Kaiser Aluminum sheet, coil & plate typical datasheet; Poisson from MIL-HDBK-5J
Aluminum 7075-T6
7075-T6/T651, Kaiser Aluminum rod & bar (mechanical) and sheet/coil/plate (physical) typical datasheets; Poisson from MIL-HDBK-5J
  1. 1
    Alloy 2024 Sheet, Coil & Plate Technical DataKaiser Aluminumarchived copyAluminum 2024-T351 · Yield strength: typical, 0.2% offset, .500 in dia specimenAluminum 2024-T351 · Ultimate tensile strength: typicalAluminum 2024-T351 · Elongation at break: typical, in 4DAluminum 2024-T351 · Young's modulus (stiffness): typicalAluminum 2024-T351 · Density: nominalAluminum 2024-T351 · Thermal conductivity: typical, 20 °CAluminum 2024-T351 · Thermal expansion: typical, mean 20-100 °CAluminum 2024-T351 · Specific heat: typical, at 100 °CAluminum 2024-T351 · Melting point: melting range
  2. 2
    Alloy 7075 Rod & Bar Technical DataKaiser Aluminumarchived copyAluminum 7075-T6 · Yield strength: typical, 0.2% offset, .500 in dia specimenAluminum 7075-T6 · Ultimate tensile strength: typicalAluminum 7075-T6 · Elongation at break: typical, in 4DAluminum 7075-T6 · Young's modulus (stiffness): typical
  3. 3
    Alloy 7075 Sheet, Coil & Plate Technical DataKaiser Aluminumarchived copyAluminum 7075-T6 · Density: nominalAluminum 7075-T6 · Thermal conductivity: typical, 20 °C, T651Aluminum 7075-T6 · Thermal expansion: typical, mean 20-100 °CAluminum 7075-T6 · Specific heat: typical, at 100 °CAluminum 7075-T6 · Melting point: melting range
  4. 4
    MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures (2003)U.S. Department of DefenseAluminum 2024-T351 · Poisson's ratio: typical (handbook physical constant), all tempersAluminum 7075-T6 · Poisson's ratio: typical (handbook physical constant)

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 2024-T351 stronger than Aluminum 7075-T6?

Aluminum 7075-T6 is stronger: its yield strength is 503 MPa against 324 MPa for Aluminum 2024-T351 (1.55x).

Which is lighter, Aluminum 2024-T351 or Aluminum 7075-T6?

Aluminum 2024-T351 is lighter: 2,770 kg/m³ against 2,800 kg/m³ for Aluminum 7075-T6.

Which is stiffer, Aluminum 2024-T351 or Aluminum 7075-T6?

Aluminum 2024-T351 is stiffer: Young's modulus 73.1 GPa against 71 GPa for Aluminum 7075-T6, so the same part in Aluminum 2024-T351 deflects less under the same load.

Which is lighter for the same job, Aluminum 2024-T351 or Aluminum 7075-T6?

For the same stiffness or strength: Aluminum 2024-T351 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate; Aluminum 7075-T6 is lighter for a strong rod or tie, strong beam, strong panel or plate.

Part that must beAluminum 2024-T351Aluminum 7075-T6
Stiff rod or tie (tension)lighter4% heavier
Stiff beam (bending)lighter3% heavier
Stiff panel or platelighter2% heavier
Strong rod or tie1.54x heavierlighter
Strong beam33% heavierlighter
Strong panel or plate23% 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).

Which is more ductile, Aluminum 2024-T351 or Aluminum 7075-T6?

Aluminum 2024-T351 stretches further before it breaks: 19% elongation at break against 11% for Aluminum 7075-T6.

Thermal

Which conducts heat better, Aluminum 2024-T351 or Aluminum 7075-T6?

Aluminum 7075-T6 conducts heat better: 130 W/m·K against 120 W/m·K for Aluminum 2024-T351.

Which expands less with temperature?

Aluminum 2024-T351 expands less: 22.9 µm/m·K against 23.4 µm/m·K for Aluminum 7075-T6.

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