PMMA vs. ETFE
Both PMMA and ETFE are thermoplastics. There are 20 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is PMMA and the bottom bar is ETFE.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 3.2 | |
| 1.5 |
| Elongation at Break, % | 4.0 | |
| 230 |
| Tensile Strength: Ultimate (UTS), MPa | 71 | |
| 46 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 96 | |
| 50 |
| Maximum Temperature: Autoignition, °C | 320 | |
| 540 |
| Maximum Temperature: Decomposition, °C | 360 | |
| 400 |
| Melting Onset (Solidus), °C | 180 | |
| 260 |
| Specific Heat Capacity, J/kg-K | 1260 | |
| 1000 |
| Thermal Conductivity, W/m-K | 0.19 | |
| 0.24 |
| Thermal Expansion, µm/m-K | 76 | |
| 95 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 Hz | 3.6 | |
| 2.1 |
| Dielectric Strength (Breakdown Potential), kV/mm | 30 | |
| 16 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.2 | |
| 1.8 |
| Limiting Oxygen Index (LOI), % | 17 | |
| 30 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 | |
| 0.48 |
| Stiffness to Weight: Bending, points | 42 | |
| 22 |
| Strength to Weight: Axial, points | 17 | |
| 7.3 |
| Strength to Weight: Bending, points | 32 | |
| 16 |
| Thermal Diffusivity, mm2/s | 0.13 | |
| 0.14 |
| Thermal Shock Resistance, points | 21 | |
| 23 |