PEI vs. EPDM Rubber
PEI belongs to the thermoplastics classification, while EPDM rubber belongs to the thermoset elastomers (rubber). There are 11 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.
For each property being compared, the top bar is PEI and the bottom bar is EPDM rubber.
Metric UnitsUS Customary Units
Mechanical Properties
| Elongation at Break, % | 3.0 to 34 | |
| 400 |
| Tensile Strength: Ultimate (UTS), MPa | 110 to 160 | |
| 13 |
Thermal Properties
| Glass Transition Temperature, °C | 210 | |
| -60 |
| Maximum Temperature: Decomposition, °C | 530 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 160 |
| Specific Heat Capacity, J/kg-K | 1050 to 1220 | |
| 2000 |
| Thermal Conductivity, W/m-K | 0.18 to 0.23 | |
| 0.2 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.0 |
Common Calculations
| Strength to Weight: Axial, points | 24 to 30 | |
| 3.6 |
| Strength to Weight: Bending, points | 40 to 44 | |
| 12 |
| Thermal Diffusivity, mm2/s | 0.11 to 0.14 | |
| 0.1 |