PEI vs. PA 11
Both PEI and PA 11 are thermoplastics. There are 12 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 PA 11.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 3.4 to 5.6 | |
| 0.4 to 1.3 |
| Elongation at Break, % | 3.0 to 34 | |
| 80 to 130 |
| Tensile Strength: Ultimate (UTS), MPa | 110 to 160 | |
| 25 to 51 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 1050 to 1220 | |
| 1740 |
| Thermal Conductivity, W/m-K | 0.18 to 0.23 | |
| 0.28 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.0 |
| Limiting Oxygen Index (LOI), % | 47 to 50 | |
| 29 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 to 2.1 | |
| 0.22 to 0.71 |
| Stiffness to Weight: Bending, points | 39 | |
| 24 to 36 |
| Strength to Weight: Axial, points | 24 to 30 | |
| 6.7 to 14 |
| Strength to Weight: Bending, points | 40 to 44 | |
| 18 to 30 |
| Thermal Diffusivity, mm2/s | 0.11 to 0.14 | |
| 0.16 |