PTFE vs. Phenolic
PTFE belongs to the thermoplastics classification, while phenolic belongs to the thermoset plastics. There are 11 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.
For each property being compared, the top bar is PTFE and the bottom bar is phenolic.
Metric UnitsUS Customary Units
Mechanical Properties
| Elongation at Break, % | 75 to 300 | |
| 2.0 |
| Tensile Strength: Ultimate (UTS), MPa | 13 to 25 | |
| 48 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 260 to 270 | |
| 150 |
| Thermal Conductivity, W/m-K | 0.24 to 0.65 | |
| 0.25 |
| Thermal Expansion, µm/m-K | 110 to 120 | |
| 120 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 2.1 to 2.4 | |
| 7.5 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 2.0 to 18 | |
| 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.1 to 2.3 | |
| 1.3 |
| Limiting Oxygen Index (LOI), % | 90 | |
| 27 |
Common Calculations
| Strength to Weight: Axial, points | 1.7 to 3.2 | |
| 10 |
| Strength to Weight: Bending, points | 5.7 to 8.7 | |
| 23 |