PEI vs. PCL
Both PEI and PCL are thermoplastics. There are 11 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.
For each property being compared, the top bar is PEI and the bottom bar is PCL.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 3.4 to 5.6 | |
| 1.2 |
| Elongation at Break, % | 3.0 to 34 | |
| 300 |
| Tensile Strength: Ultimate (UTS), MPa | 110 to 160 | |
| 10 |
Thermal Properties
| Glass Transition Temperature, °C | 210 | |
| -60 |
| Maximum Temperature: Decomposition, °C | 530 | |
| 200 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 40 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.1 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 to 2.1 | |
| 0.61 |
| Stiffness to Weight: Bending, points | 39 | |
| 32 |
| Strength to Weight: Axial, points | 24 to 30 | |
| 2.5 |
| Strength to Weight: Bending, points | 40 to 44 | |
| 9.4 |