Materials / Compare
Brass C360 vs. Rubber
Compare Brass C360 vs. Rubber strength, stiffness, weight and thermal properties.
| Try it on a partA bracket to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | 310MPasourcetypical, 0.5% extension under load | not given (tensile used) |
| Ultimate tensile strength | 400MPasourcetypical17.4x stronger | 23MPasourcetypical |
| Elongation at break | 25%sourcetypical, 1 in. rod | 830%sourcetypical |
| Young's modulus (stiffness) | 96.5GPasourcetypical, temper-independent | not sourced |
| Density | 8,498kg/m³sourcenominal | 960kg/m³sourcetypical (specific gravity) |
| Strength to weight | 36.5kN·m/kg1.52x higher | 24kN·m/kg |
| Stiffness to weight | 11.4MN·m/kg | not sourced |
| Poisson's ratio | 0.34sourcebase material: leaded free-machining brass CuZn39Pb2 (C37700), Wieland-Z30 rolled products, reference value at room temperature | 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 modulus | 36GPa | not sourced |
| Bulk modulus | 101GPa | not sourced |
| Speed of sound | 3,370m/s | not sourced |
| Thermal | ||
| Thermal conductivity | 116W/m·Ksourcetypical, 20 °C | 0.151W/m·Ksourcegovernment selected value (US Army Natick Laboratories TR 66-49-PR, 1966), soft vulcanized natural rubber, 25 °C |
| Thermal expansion | 20.5µm/m·Ksourcetypical, mean 20-300 °C | not sourced |
| 100 mm part over a 50 °C swing | 103µm growth | not sourced |
| Specific heat | 377J/kg·Ksourcetypical, 20 °C | 1,881J/kg·Ksourcegovernment (NBS J. Res. 68A, Table 7; values observed for unvulcanized NR by Bekkedahl and Matheson), 25 °C |
| Heats up and cools (diffusivity) | 36.2mm²/s433x faster | 0.0836mm²/s |
| Thermal shock resistance | 11,997W/m | not sourced |
| Melting point | 888–899°Csourcesolidus-liquidus | not sourced |
| Max service temperature | not sourced | 70°Csourcecontinuous use operating range |
| Values for | C36000 free-cutting brass, H02 half-hard rod 1 in. section (20% cold work), copper.org typical values | 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 Brass C360 stronger than Rubber?
Brass C360 is stronger: its yield strength is 310 MPa against tensile strength 23 MPa for Rubber (13.5x).
Which is lighter, Brass C360 or Rubber?
Rubber is lighter: 960 kg/m³ against 8,498 kg/m³ for Brass C360.
Which is lighter for the same job, Brass C360 or Rubber?
For the same stiffness or strength: Brass C360 is lighter for a strong rod or tie; Rubber is lighter for a strong beam, strong panel or plate.
| Part that must be | Brass C360 | Rubber |
|---|---|---|
| Strong rod or tie | lighter | 1.52x heavier |
| Strong beam | 1.56x heavier | lighter |
| Strong panel or plate | 2.41x heavier | lighter |
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, Brass C360 or Rubber?
Brass C360 conducts heat better: 116 W/m·K against 0.151 W/m·K for Rubber.