Materials / Compare

Rubber vs. Stainless 17-4PH

Compare Rubber vs. Stainless 17-4PH strength, stiffness, weight and thermal properties.

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RubberBulk polymer (molded or machined)
Stainless 17-4PHWrought
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Mechanical
Yield strengthnot given (tensile used)1,275MPasourcetypical, transverse, sheet/strip
Ultimate tensile strength23MPasourcetypical1,379MPasourcetypical, transverse, sheet/strip
Elongation at break830%sourcetypical9%sourcetypical, transverse, in 2 in. (50.8 mm)
Young's modulus (stiffness)not sourced197GPasourceH 900
Density960kg/m³sourcetypical (specific gravity)7,800kg/m³sourceH 900
Strength to weight24kN·m/kg163kN·m/kg6.82x higher
Stiffness to weightnot sourced25.3MN·m/kg
Poisson's ratio0.5sourcegovernment (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).0.272sourceH 900 (column)
Shear modulusnot sourced77.4GPa
Bulk modulusnot sourced144GPa
Speed of soundnot sourced5,026m/s
Thermal
Thermal conductivity0.151W/m·Ksourcegovernment selected value (US Army Natick Laboratories TR 66-49-PR, 1966), soft vulcanized natural rubber, 25 °C17.9W/m·Ksourceat 149 °C (300 °F), H 900
Thermal expansionnot sourced10.8µm/m·Ksourcemean, 21–93 °C (70–200 °F), H 900
100 mm part over a 50 °C swingnot sourced54µm growth
Specific heat1,881J/kg·Ksourcegovernment (NBS J. Res. 68A, Table 7; values observed for unvulcanized NR by Bekkedahl and Matheson), 25 °C460J/kg·Ksourcemean, 0–100 °C, H 900
Heats up and cools (diffusivity)0.0836mm²/s4.99mm²/s59.7x faster
Thermal shock resistancenot sourced7,809W/m
Max service temperature70°Csourcecontinuous use operating range316°Csourcestrength-retention limit (not oxidation)
Values forWeir Minerals Linatex Premium rubber (95 % natural rubber), typical physical properties, spec sheet WMD0118/202305Cleveland-Cliffs 17-4 PH, Condition H 900, sheet/strip, transverse (Product Data Bulletin, May 2021)

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 Rubber stronger than Stainless 17-4PH?

Stainless 17-4PH is stronger: its yield strength is 1,275 MPa against tensile strength 23 MPa for Rubber (55.4x).

Which is lighter, Rubber or Stainless 17-4PH?

Rubber is lighter: 960 kg/m³ against 7,800 kg/m³ for Stainless 17-4PH.

Which is lighter for the same job, Rubber or Stainless 17-4PH?

For the same stiffness or strength: Rubber is lighter for a strong panel or plate; Stainless 17-4PH is lighter for a strong rod or tie, strong beam.

Part that must beRubberStainless 17-4PH
Strong rod or tie6.82x heavierlighter
Strong beam1.79x heavierlighter
Strong panel or platelighter9% 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, Rubber or Stainless 17-4PH?

Stainless 17-4PH conducts heat better: 17.9 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 303Aluminum 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 SteelStainless 17-4PH
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 303Aluminum 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 SteelBrickRubberStainless 17-4PH
Strength against density

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