PEI vs. POM-C
Both PEI and POM-C are thermoplastics. There are 13 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.
For each property being compared, the top bar is PEI and the bottom bar is POM-C.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 3.4 to 5.6 | |
| 2.8 to 9.7 |
| Elongation at Break, % | 3.0 to 34 | |
| 3.0 to 65 |
| Flexural Modulus, GPa | 3.4 to 5.9 | |
| 2.6 to 9.0 |
| Flexural Strength, MPa | 140 to 210 | |
| 83 to 170 |
| Impact Strength: Notched Izod, J/m | 55 to 110 | |
| 68 to 69 |
| Tensile Strength: Ultimate (UTS), MPa | 110 to 160 | |
| 61 to 110 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 1050 to 1220 | |
| 1130 to 1370 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.4 to 1.6 |
| Limiting Oxygen Index (LOI), % | 47 to 50 | |
| 15 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 to 2.1 | |
| 1.1 to 3.3 |
| Stiffness to Weight: Bending, points | 39 | |
| 33 to 44 |
| Strength to Weight: Axial, points | 24 to 30 | |
| 12 to 19 |
| Strength to Weight: Bending, points | 40 to 44 | |
| 24 to 32 |