Nitrile Rubber (NBR 33% ACN vulcanized) vs Polyurethane Elastomer (AU/EU Cast 90A)
Property comparison of Nitrile Rubber (NBR 33% ACN vulcanized) and Polyurethane Elastomer (AU/EU Cast 90A), both rubber elastomer.
| Property | Nitrile Rubber (NBR 33% ACN vulcanized) | Polyurethane Elastomer (AU/EU Cast 90A) | Difference |
|---|---|---|---|
| Tensile strength | 15 MPa | 39 MPa | +160% |
| Elongation | 450 % | 580 % | +29% |
| Poisson ratio | 0.5 | 0.48 | -4% |
| Density | 1,000 kg/m³ | 1,270 kg/m³ | +27% |
| Thermal conductivity | 0.24 W/m·K | 0.19 W/m·K | -21% |
| Specific heat | 1,800 J/kg·K | 1,760 J/kg·K | -2% |
| Coefficient of thermal expansion | 0.00019 1/K | 0.00015 1/K | -21% |
Difference is Polyurethane Elastomer (AU/EU Cast 90A) relative to Nitrile Rubber (NBR 33% ACN vulcanized). 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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