CR Rubber vs. PAI
CR rubber belongs to the thermoset elastomers (rubber) classification, while PAI belongs to the thermoplastics. There are 13 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is CR rubber and the bottom bar is PAI.
Metric UnitsUS Customary Units
Mechanical Properties
| Elongation at Break, % | 380 | |
| 3.0 to 12 |
| Tensile Strength: Ultimate (UTS), MPa | 11 | |
| 100 to 180 |
Thermal Properties
| Glass Transition Temperature, °C | -45 | |
| 280 |
| Maximum Temperature: Autoignition, °C | 410 | |
| 530 |
| Maximum Temperature: Decomposition, °C | 350 | |
| 490 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 260 |
| Specific Heat Capacity, J/kg-K | 1120 | |
| 910 to 1000 |
| Thermal Conductivity, W/m-K | 0.19 | |
| 0.26 to 0.53 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.5 | |
| 1.4 to 1.6 |
| Limiting Oxygen Index (LOI), % | 26 | |
| 45 |
Common Calculations
| Strength to Weight: Axial, points | 1.9 | |
| 19 to 34 |
| Strength to Weight: Bending, points | 7.1 | |
| 33 to 49 |
| Thermal Diffusivity, mm2/s | 0.11 | |
| 0.16 to 0.41 |