ETFE vs. PPA
Both ETFE and PPA are thermoplastics. There are 16 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is ETFE and the bottom bar is PPA.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 1.5 | |
| 2.1 to 2.2 |
| Elongation at Break, % | 230 | |
| 30 |
| Flexural Modulus, GPa | 1.2 | |
| 2.3 to 2.4 |
| Tensile Strength: Ultimate (UTS), MPa | 46 | |
| 57 to 69 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 50 | |
| 120 |
| Maximum Temperature: Decomposition, °C | 400 | |
| 450 |
| Melting Onset (Solidus), °C | 260 | |
| 310 |
| Specific Heat Capacity, J/kg-K | 1000 | |
| 1400 |
| Thermal Conductivity, W/m-K | 0.24 | |
| 0.15 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.8 | |
| 1.1 |
| Water Absorption After 24 Hours, % | 0.010 | |
| 0.7 |
Common Calculations
| Stiffness to Weight: Axial, points | 0.48 | |
| 1.0 to 1.1 |
| Stiffness to Weight: Bending, points | 22 | |
| 38 |
| Strength to Weight: Axial, points | 7.3 | |
| 14 to 17 |
| Strength to Weight: Bending, points | 16 | |
| 29 to 33 |
| Thermal Diffusivity, mm2/s | 0.14 | |
| 0.095 |