PP Copolymer vs. PEI
Both PP copolymer and PEI are thermoplastics. There are 14 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 PP copolymer and the bottom bar is PEI.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 0.9 to 1.1 | |
| 3.4 to 5.6 |
| Elongation at Break, % | 12 | |
| 3.0 to 34 |
| Flexural Modulus, GPa | 1.3 | |
| 3.4 to 5.9 |
| Flexural Strength, MPa | 31 | |
| 140 to 210 |
| Impact Strength: Notched Izod, J/m | 110 to 350 | |
| 55 to 110 |
| Tensile Strength: Ultimate (UTS), MPa | 23 to 33 | |
| 110 to 160 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 50 to 100 | |
| 200 to 210 |
| Maximum Temperature: Mechanical, °C | 80 | |
| 170 |
Electrical Properties
| Dielectric Strength (Breakdown Potential), kV/mm | 21 to 22 | |
| 30 to 33 |
Otherwise Unclassified Properties
| Density, g/cm3 | 0.9 | |
| 1.3 to 1.5 |
Common Calculations
| Stiffness to Weight: Axial, points | 0.56 to 0.68 | |
| 1.5 to 2.1 |
| Stiffness to Weight: Bending, points | 36 to 38 | |
| 39 |
| Strength to Weight: Axial, points | 7.1 to 10 | |
| 24 to 30 |
| Strength to Weight: Bending, points | 20 to 25 | |
| 40 to 44 |