Materials / Compare

Aluminum A380 vs. Rubber

Compare Aluminum A380 vs. Rubber strength, stiffness, weight and thermal properties.

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Aluminum A380Cast
RubberBulk polymer (molded or machined)
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Mechanical
Yield strength160MPasourcetypical, 25 °Cnot given (tensile used)
Ultimate tensile strength320MPasourcetypical, 25 °C23MPasourcetypical
Elongation at break3.5%sourcetypical830%sourcetypical237x more ductile
Young's modulus (stiffness)71GPasourcetypical, 25 °Cnot sourced
Density2,713kg/m³sourcetypical at 68 °F960kg/m³sourcetypical (specific gravity)
Strength to weight59kN·m/kg2.46x higher24kN·m/kg
Stiffness to weight26.2MN·m/kgnot sourced
Poisson's rationot sourced0.5sourcegovernment (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 modulusnot sourcednot sourced
Bulk modulusnot sourcednot sourced
Speed of sound5,116m/snot sourced
Thermal
Thermal conductivity96.2W/m·Ksourcetypical at 68 °F0.151W/m·Ksourcegovernment selected value (US Army Natick Laboratories TR 66-49-PR, 1966), soft vulcanized natural rubber, 25 °C
Thermal expansion21.8µm/m·Ksourcetypical, 68-572 °F (20-300 °C)not sourced
100 mm part over a 50 °C swing109µm growthnot sourced
Specific heat963J/kg·Ksourcetypical at 68 °F1,881J/kg·Ksourcegovernment (NBS J. Res. 68A, Table 7; values observed for unvulcanized NR by Bekkedahl and Matheson), 25 °C
Heats up and cools (diffusivity)36.8mm²/s440x faster0.0836mm²/s
Thermal shock resistancenot sourcednot sourced
Max service temperaturenot sourced70°Csourcecontinuous use operating range
Values forA380 aluminium high-pressure die-casting alloy, typical properties; Rheocast Company (aluminium die caster, Germantown WI) A380 alloy data page.Weir 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 A380 stronger than Rubber?

Aluminum A380 is stronger: its yield strength is 160 MPa against tensile strength 23 MPa for Rubber (6.96x).

Which is lighter, Aluminum A380 or Rubber?

Rubber is lighter: 960 kg/m³ against 2,713 kg/m³ for Aluminum A380.

Which is lighter for the same job, Aluminum A380 or Rubber?

For the same stiffness or strength: Aluminum A380 is lighter for a strong rod or tie, strong beam; Rubber is lighter for a strong panel or plate.

Part that must beAluminum A380Rubber
Strong rod or tielighter2.46x heavier
Strong beamlighter29% heavier
Strong panel or plate7% 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 A380 or Rubber?

Rubber stretches further before it breaks: 830% elongation at break against 3.5% for Aluminum A380.

Which conducts heat better, Aluminum A380 or Rubber?

Aluminum A380 conducts heat better: 96.2 W/m·K against 0.151 W/m·K for Rubber.

Among 72 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 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 Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum A380
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 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 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 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum A380Rubber
Strength against density

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