PMMA vs. Unfilled PTFE
Both PMMA and unfilled PTFE are thermoplastics. There are 24 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is PMMA and the bottom bar is unfilled PTFE.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 120 | |
| 24 |
| Elastic (Young's, Tensile) Modulus, GPa | 3.2 | |
| 0.45 |
| Elongation at Break, % | 4.0 | |
| 300 |
| Flexural Strength, MPa | 110 | |
| 50 |
| Impact Strength: Notched Izod, J/m | 74 | |
| 170 |
| Tensile Strength: Ultimate (UTS), MPa | 71 | |
| 25 |
Thermal Properties
| Glass Transition Temperature, °C | 110 | |
| -35 |
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 96 | |
| 70 |
| Maximum Temperature: Autoignition, °C | 320 | |
| 630 |
| Maximum Temperature: Decomposition, °C | 360 | |
| 540 |
| Melting Onset (Solidus), °C | 180 | |
| 330 |
| Specific Heat Capacity, J/kg-K | 1260 | |
| 1050 |
| Thermal Conductivity, W/m-K | 0.19 | |
| 0.24 |
| Thermal Expansion, µm/m-K | 76 | |
| 120 |
Electrical Properties
| Dielectric Strength (Breakdown Potential), kV/mm | 30 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.2 | |
| 2.2 |
| Limiting Oxygen Index (LOI), % | 17 | |
| 90 |
| Refractive Index | 1.5 | |
| 1.4 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 | |
| 0.12 |
| Stiffness to Weight: Bending, points | 42 | |
| 12 |
| Strength to Weight: Axial, points | 17 | |
| 3.2 |
| Strength to Weight: Bending, points | 32 | |
| 8.7 |
| Thermal Diffusivity, mm2/s | 0.13 | |
| 0.11 |
| Thermal Shock Resistance, points | 21 | |
| 34 |