PFA vs. PAI
Both PFA and PAI 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 PFA and the bottom bar is PAI.
Metric UnitsUS Customary Units
Mechanical Properties
| Elongation at Break, % | 300 | |
| 3.0 to 12 |
| Flexural Modulus, GPa | 0.7 | |
| 4.0 to 6.8 |
| Tensile Strength: Ultimate (UTS), MPa | 30 | |
| 100 to 180 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 50 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 260 | |
| 260 |
| Specific Heat Capacity, J/kg-K | 1000 | |
| 910 to 1000 |
| Thermal Conductivity, W/m-K | 0.25 | |
| 0.26 to 0.53 |
| Thermal Expansion, µm/m-K | 120 | |
| 15 to 34 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.2 | |
| 1.4 to 1.6 |
| Limiting Oxygen Index (LOI), % | 80 | |
| 45 |
| Water Absorption After 24 Hours, % | 0 | |
| 0.3 to 0.4 |
Common Calculations
| Strength to Weight: Axial, points | 3.9 | |
| 19 to 34 |
| Strength to Weight: Bending, points | 10 | |
| 33 to 49 |
| Thermal Diffusivity, mm2/s | 0.12 | |
| 0.16 to 0.41 |