FEP vs. PHB
Both FEP and PHB are thermoplastics. There are 15 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.
For each property being compared, the top bar is FEP and the bottom bar is PHB.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 0.43 | |
| 1.3 |
| Elongation at Break, % | 300 | |
| 7.5 |
| Flexural Strength, MPa | 24 | |
| 20 |
| Tensile Strength: Ultimate (UTS), MPa | 20 | |
| 30 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 50 | |
| 60 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 120 |
| Melting Onset (Solidus), °C | 260 | |
| 180 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 Hz | 1.9 | |
| 3.0 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 16 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.1 | |
| 1.3 |
| Water Absorption After 24 Hours, % | 0.010 | |
| 0.75 |
Common Calculations
| Stiffness to Weight: Axial, points | 0.11 | |
| 0.58 |
| Stiffness to Weight: Bending, points | 12 | |
| 29 |
| Strength to Weight: Axial, points | 2.6 | |
| 6.7 |
| Strength to Weight: Bending, points | 7.6 | |
| 17 |