PEI vs. PTT
Both PEI and PTT are thermoplastics. There are 10 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 PTT.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.3 |
| Elastic (Young's, Tensile) Modulus, GPa | 3.4 to 5.6 | |
| 2.5 |
| Elongation at Break, % | 3.0 to 34 | |
| 60 |
| Flexural Modulus, GPa | 3.4 to 5.9 | |
| 2.8 |
| Flexural Strength, MPa | 140 to 210 | |
| 100 |
| Stiffness to Weight: Axial, points | 1.5 to 2.1 | |
| 1.0 |
| Stiffness to Weight: Bending, points | 39 | |
| 34 |
| Strength to Weight: Axial, points | 24 to 30 | |
| 13 |
| Strength to Weight: Bending, points | 40 to 44 | |
| 26 |
| Tensile Strength: Ultimate (UTS), MPa | 110 to 160 | |
| 60 |