Thermoset PI vs. PPS
Thermoset PI belongs to the thermoset plastics classification, while PPS belongs to the thermoplastics. There are 14 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is thermoset PI and the bottom bar is PPS.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 120 to 210 | |
| 95 to 160 |
| Elongation at Break, % | 2.0 to 5.9 | |
| 2.5 to 11 |
| Flexural Modulus, GPa | 3.1 to 4.8 | |
| 13 to 17 |
| Flexural Strength, MPa | 60 to 100 | |
| 120 to 190 |
| Impact Strength: Notched Izod, J/m | 21 to 43 | |
| 21 to 80 |
| Tensile Strength: Ultimate (UTS), MPa | 37 to 81 | |
| 75 to 190 |
Thermal Properties
| Glass Transition Temperature, °C | 360 | |
| 190 to 290 |
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 370 | |
| 130 to 260 |
| Specific Heat Capacity, J/kg-K | 1130 | |
| 910 to 1000 |
| Thermal Expansion, µm/m-K | 38 to 54 | |
| 20 to 45 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.4 to 1.6 | |
| 1.3 to 1.7 |
| Water Absorption At Saturation, % | 3.6 | |
| 0.060 to 0.1 |
Common Calculations
| Strength to Weight: Axial, points | 6.5 to 16 | |
| 16 to 37 |
| Strength to Weight: Bending, points | 16 to 30 | |
| 30 to 52 |