FEP vs. PA 11
Both FEP and PA 11 are thermoplastics. There are 13 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is FEP and the bottom bar is PA 11.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 0.43 | |
| 0.4 to 1.3 |
| Elongation at Break, % | 300 | |
| 80 to 130 |
| Tensile Strength: Ultimate (UTS), MPa | 20 | |
| 25 to 51 |
Thermal Properties
| Melting Onset (Solidus), °C | 260 | |
| 180 |
| Specific Heat Capacity, J/kg-K | 1170 | |
| 1740 |
| Thermal Conductivity, W/m-K | 0.22 | |
| 0.28 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.1 | |
| 1.0 |
| Limiting Oxygen Index (LOI), % | 80 | |
| 29 |
Common Calculations
| Stiffness to Weight: Axial, points | 0.11 | |
| 0.22 to 0.71 |
| Stiffness to Weight: Bending, points | 12 | |
| 24 to 36 |
| Strength to Weight: Axial, points | 2.6 | |
| 6.7 to 14 |
| Strength to Weight: Bending, points | 7.6 | |
| 18 to 30 |
| Thermal Diffusivity, mm2/s | 0.088 | |
| 0.16 |