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Aluminum 7050-T7451 vs. Rubber

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

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Aluminum 7050-T7451Wrought
RubberBulk polymer (molded or machined)
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Mechanical
Yield strength469MPasourcetypical, longitudinal, 0.2% offsetnot given (tensile used)
Ultimate tensile strength524MPasourcetypical, longitudinal23MPasourcetypical
Elongation at break11%sourcetypical, longitudinal830%sourcetypical
Young's modulus (stiffness)70.3GPasourcetypicalnot sourced
Density2,830kg/m³sourcenominal960kg/m³sourcetypical (specific gravity)
Strength to weight166kN·m/kg6.92x higher24kN·m/kg
Stiffness to weight24.8MN·m/kgnot sourced
Poisson's ratio0.33sourcetypical (handbook physical constant)0.5sourcegovernment (NBS J. Res. 68A, 1964): computed by NBS for peroxide-cured gum NR vulcanizate, 25 °C, infinitesimal deformation0.49 in the solver: the linear element locks as the ratio nears 0.5 (nearly incompressible).
Shear modulus26.4GPanot sourced
Bulk modulus68.9GPanot sourced
Speed of sound4,984m/snot sourced
Thermal
Thermal conductivity157W/m·Ksourcetypical, 20 °C0.151W/m·Ksourcegovernment selected value (US Army Natick Laboratories TR 66-49-PR, 1966), soft vulcanized natural rubber, 25 °C
Thermal expansion23.5µm/m·Ksourcetypical, mean 20-100 °Cnot sourced
100 mm part over a 50 °C swing118µm growthnot sourced
Specific heat860J/kg·Ksourcetypical, at 100 °C1,881J/kg·Ksourcegovernment (NBS J. Res. 68A, Table 7; values observed for unvulcanized NR by Bekkedahl and Matheson), 25 °C
Heats up and cools (diffusivity)64.5mm²/s771x faster0.0836mm²/s
Thermal shock resistance29,862W/mnot sourced
Melting point524–635°Csourcemelting rangenot sourced
Max service temperaturenot sourced70°Csourcecontinuous use operating range
Values for7050-T7451 plate, Kaiser Aluminum sheet, coil & plate typical datasheet (longitudinal); Poisson from MIL-HDBK-5JWeir Minerals Linatex Premium rubber (95 % natural rubber), typical physical properties, spec sheet WMD0118/202305

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.

Questions

Is Aluminum 7050-T7451 stronger than Rubber?

Aluminum 7050-T7451 is stronger: its yield strength is 469 MPa against tensile strength 23 MPa for Rubber (20.4x).

Which is lighter, Aluminum 7050-T7451 or Rubber?

Rubber is lighter: 960 kg/m³ against 2,830 kg/m³ for Aluminum 7050-T7451.

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

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

Part that must beAluminum 7050-T7451Rubber
Strong rod or tielighter6.92x heavier
Strong beamlighter2.53x heavier
Strong panel or platelighter1.53x 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 Rubber?

Aluminum 7050-T7451 conducts heat better: 157 W/m·K against 0.151 W/m·K for Rubber.

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 AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelAluminum 7050-T7451
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)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 PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickAluminum 7050-T7451Rubber
Strength against density

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