PEI vs. ECO Rubber
PEI belongs to the thermoplastics classification, while ECO rubber belongs to the thermoset elastomers (rubber). There are 11 material properties with values for both materials. Properties with values for just one material (20, in this case) are not shown.
For each property being compared, the top bar is PEI and the bottom bar is ECO rubber.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 140 to 180 | |
| 21 |
| Elastic (Young's, Tensile) Modulus, GPa | 3.4 to 5.6 | |
| 0.0075 |
| Elongation at Break, % | 3.0 to 34 | |
| 440 |
| Tensile Strength: Ultimate (UTS), MPa | 110 to 160 | |
| 16 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 170 | |
| 130 |
| Thermal Expansion, µm/m-K | 20 to 53 | |
| 650 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.5 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 to 2.1 | |
| 0.0029 |
| Stiffness to Weight: Bending, points | 39 | |
| 4.5 |
| Strength to Weight: Axial, points | 24 to 30 | |
| 3.0 |
| Strength to Weight: Bending, points | 40 to 44 | |
| 9.5 |