PEI vs. ABS
Both PEI and ABS are thermoplastics. There are 15 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.
For each property being compared, the top bar is PEI and the bottom bar is ABS.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 3.4 to 5.6 | |
| 2.0 to 2.6 |
| Elongation at Break, % | 3.0 to 34 | |
| 3.5 to 50 |
| Flexural Modulus, GPa | 3.4 to 5.9 | |
| 2.1 to 7.6 |
| Flexural Strength, MPa | 140 to 210 | |
| 72 to 97 |
| Impact Strength: Notched Izod, J/m | 55 to 110 | |
| 70 to 370 |
| Tensile Strength: Ultimate (UTS), MPa | 110 to 160 | |
| 37 to 110 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 200 to 210 | |
| 76 to 110 |
| Thermal Expansion, µm/m-K | 20 to 53 | |
| 81 to 95 |
Electrical Properties
| Dielectric Strength (Breakdown Potential), kV/mm | 30 to 33 | |
| 15 to 16 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.0 to 1.4 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 to 2.1 | |
| 0.79 to 1.4 |
| Stiffness to Weight: Bending, points | 39 | |
| 30 to 44 |
| Strength to Weight: Axial, points | 24 to 30 | |
| 10 to 22 |
| Strength to Weight: Bending, points | 40 to 44 | |
| 24 to 37 |
| Thermal Shock Resistance, points | 44 to 100 | |
| 11 to 50 |