Polyurethane Elastomer (AU/EU Cast 90A) vs Silicone Rubber (VMQ peroxide-cured)
Property comparison of Polyurethane Elastomer (AU/EU Cast 90A) and Silicone Rubber (VMQ peroxide-cured), both rubber elastomer.
| Property | Polyurethane Elastomer (AU/EU Cast 90A) | Silicone Rubber (VMQ peroxide-cured) | Difference |
|---|---|---|---|
| Tensile strength | 39 MPa | 8 MPa | -79% |
| Elongation | 580 % | 400 % | -31% |
| Poisson ratio | 0.48 | 0.5 | +4% |
| Density | 1,270 kg/m³ | 1,160 kg/m³ | -9% |
| Thermal conductivity | 0.19 W/m·K | 0.23 W/m·K | +21% |
| Specific heat | 1,760 J/kg·K | 1,400 J/kg·K | -20% |
| Coefficient of thermal expansion | 0.00015 1/K | 0.0003 1/K | +100% |
Difference is Silicone Rubber (VMQ peroxide-cured) relative to Polyurethane Elastomer (AU/EU Cast 90A). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- standard
- ASTM
- standard
- ASTM
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