PAI vs. PBT
Both PAI and PBT are thermoplastics. There are 16 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 PAI and the bottom bar is PBT.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 4.0 to 8.3 | |
| 2.7 to 8.7 |
| Elongation at Break, % | 3.0 to 12 | |
| 2.5 to 43 |
| Flexural Modulus, GPa | 4.0 to 6.8 | |
| 2.6 to 9.1 |
| Flexural Strength, MPa | 160 to 320 | |
| 79 to 210 |
| Tensile Strength: Ultimate (UTS), MPa | 100 to 180 | |
| 58 to 140 |
Thermal Properties
| Glass Transition Temperature, °C | 280 | |
| 40 |
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 280 | |
| 4.0 |
| Maximum Temperature: Autoignition, °C | 530 | |
| 380 |
| Maximum Temperature: Decomposition, °C | 490 | |
| 380 |
| Specific Heat Capacity, J/kg-K | 910 to 1000 | |
| 1040 to 1200 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.4 to 1.6 | |
| 1.3 to 1.5 |
| Limiting Oxygen Index (LOI), % | 45 | |
| 20 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.6 to 3.2 | |
| 1.1 to 3.2 |
| Stiffness to Weight: Bending, points | 38 to 47 | |
| 35 to 45 |
| Strength to Weight: Axial, points | 19 to 34 | |
| 12 to 25 |
| Strength to Weight: Bending, points | 33 to 49 | |
| 25 to 38 |