Materials / Compare

Aluminum 7050-T7451 vs. Zinc Zamak 3

Compare Aluminum 7050-T7451 vs. Zinc Zamak 3 strength, stiffness, weight and thermal properties.

Aluminum 7050-T7451Wrought
Zinc Zamak 3Cast
MechanicalAluminum 7050-T7451Zinc Zamak 3
Yield strength469MPa12.12x stronger221MPa2
Ultimate tensile strength524MPa11.85x stronger283MPa2
Elongation at break11%110%2
Young's modulus (stiffness)70.3GPa185.5GPa222% stiffer
Density2,830kg/m³12.33x lighter6,600kg/m³2
Strength to weight166kN·m/kg4.95x higher33.5kN·m/kg
Stiffness to weight24.8MN·m/kg1.92x higher13MN·m/kg
Poisson's ratio0.3330.274
Shear modulus26.4GPa33.7GPa27% stiffer in shear
Bulk modulus68.9GPa11% higher62GPa
Speed of sound4,984m/s38% faster3,599m/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-H24Plastic 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 7050-T7451Zinc Zamak 3
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-H24Plastic 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 7050-T7451Zinc Zamak 3
Strength against densityHigher and further left: stronger for its weight
ThermalAluminum 7050-T7451Zinc Zamak 3
Thermal conductivity157W/m·K139% more heat through a fin113W/m·K2
Thermal expansion23.5µm/m·K117% less27.4µm/m·K2
100 mm part over a 50 °C swing118µm growth17% less137µm growth
Specific heat860J/kg·K12.05x higher419J/kg·K2
Heats up and cools (diffusivity)64.5mm²/s1.58x faster40.9mm²/s
Thermal shock resistance29,862W/m3.84x more resistant7,782W/m
Melting pointmelting range524–635°C1melting range381–387°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-H24Plastic 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 7050-T7451Zinc Zamak 3
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-H24Plastic 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 7050-T7451Zinc Zamak 3
Thermal expansion against thermal conductivityLower and further right: warps less when heated
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Sources4 documents: Kaiser Aluminum, Nathan Trotter, U.S. Department of Defense, Eastern Alloys
Aluminum 7050-T7451
7050-T7451 plate, Kaiser Aluminum sheet, coil & plate typical datasheet (longitudinal); Poisson from MIL-HDBK-5J
Zinc Zamak 3
Zamak 3 (ASTM B86 die cast), Nathan Trotter (zinc alloy producer) technical data sheet, typical values
  1. 1
    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
  2. 2
    Zamak 3 Technical Data SheetNathan Trotterarchived copyZinc Zamak 3 · Yield strength: typicalZinc Zamak 3 · Ultimate tensile strength: typicalZinc Zamak 3 · Elongation at break: typical, in 2 in.Zinc Zamak 3 · Young's modulus (stiffness): typicalZinc Zamak 3 · Density: typicalZinc Zamak 3 · Thermal conductivity: typicalZinc Zamak 3 · Thermal expansion: typicalZinc Zamak 3 · Specific heat: typicalZinc Zamak 3 · 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
    Zinc Die Casting Properties Guide (2012)Eastern AlloysZinc Zamak 3 · Poisson's ratio: typical, Zamak 3 hot-chamber die cast

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 7050-T7451 stronger than Zinc Zamak 3?

Aluminum 7050-T7451 is stronger: its yield strength is 469 MPa against 221 MPa for Zinc Zamak 3 (2.12x).

Which is lighter, Aluminum 7050-T7451 or Zinc Zamak 3?

Aluminum 7050-T7451 is lighter: 2,830 kg/m³ against 6,600 kg/m³ for Zinc Zamak 3.

Which is stiffer, Aluminum 7050-T7451 or Zinc Zamak 3?

Zinc Zamak 3 is stiffer: Young's modulus 85.5 GPa against 70.3 GPa for Aluminum 7050-T7451, so the same part in Zinc Zamak 3 deflects less under the same load.

Which is lighter for the same job, Aluminum 7050-T7451 or Zinc Zamak 3?

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

Part that must beAluminum 7050-T7451Zinc Zamak 3
Stiff rod or tie (tension)lighter1.92x heavier
Stiff beam (bending)lighter2.11x heavier
Stiff panel or platelighter2.18x heavier
Strong rod or tielighter4.95x heavier
Strong beamlighter3.85x heavier
Strong panel or platelighter3.4x 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).

Thermal

Which conducts heat better, Aluminum 7050-T7451 or Zinc Zamak 3?

Aluminum 7050-T7451 conducts heat better: 157 W/m·K against 113 W/m·K for Zinc Zamak 3.

Which expands less with temperature?

Aluminum 7050-T7451 expands less: 23.5 µm/m·K against 27.4 µm/m·K for Zinc Zamak 3.

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