Thermoplastic PI vs. PAI
Both thermoplastic PI and PAI are thermoplastics. There are 15 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is thermoplastic PI and the bottom bar is PAI.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 3.7 to 20 | |
| 4.0 to 8.3 |
| Elongation at Break, % | 1.8 to 7.5 | |
| 3.0 to 12 |
| Flexural Modulus, GPa | 3.8 to 19 | |
| 4.0 to 6.8 |
| Flexural Strength, MPa | 170 to 330 | |
| 160 to 320 |
| Tensile Strength: Ultimate (UTS), MPa | 110 to 220 | |
| 100 to 180 |
Thermal Properties
| Glass Transition Temperature, °C | 260 | |
| 280 |
| Maximum Temperature: Autoignition, °C | 600 | |
| 530 |
| Maximum Temperature: Decomposition, °C | 530 | |
| 490 |
| Specific Heat Capacity, J/kg-K | 970 to 1100 | |
| 910 to 1000 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.4 to 1.5 | |
| 1.4 to 1.6 |
| Limiting Oxygen Index (LOI), % | 35 | |
| 45 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 to 7.9 | |
| 1.6 to 3.2 |
| Stiffness to Weight: Bending, points | 37 to 64 | |
| 38 to 47 |
| Strength to Weight: Axial, points | 22 to 42 | |
| 19 to 34 |
| Strength to Weight: Bending, points | 36 to 57 | |
| 33 to 49 |