Chemically inert, very low friction, wide temperature range — seals, slides, insulators, chem parts.
| Property | Typical value |
|---|---|
| Density | 2200 kg/m³ |
| Yield | — (creeps; no practical yield) |
| Tensile | 20–35 MPa |
| Elongation | ~200–400 % |
| Young's E | 0.4–0.75 GPa |
| Hardness | ~55 Shore D |
| CTE | ~130 µm/m·K (high, non-linear) |
| Thermal cond. | ~0.25 W/m·K |
| Max service | ~260 °C |
| Poisson ν | ~0.46 |
| Shear modulus G | ~0.2 GPa (derived — creeps under load) |
| Shear strength | — |
| Specific heat | ~1000 J/kg·K |
| Melting point (Tm) | ~327 °C (sinters, does not flow) |
Soft — very sharp tools, light cuts, support; creeps/cold-flows, so allow for movement.
Cannot be melt-welded or bonded conventionally (needs etching for adhesives).
| System | Designation |
|---|---|
| EN | ISO 1043-1 "PTFE"; ISO 13000 (semi-finished PTFE) |
| DIN | DIN 7728 PTFE |
| ASTM | D4894 / D4895 |
Equivalents & alternatives: Virgin PTFE; glass-filled PTFE (better wear/creep), bronze-filled (bearings). Alt: PEEK (structural high-temp), UHMWPE (wear, lower temp).
Tough, wear-resistant nylon — gears, rollers, wear pads, bushes. Cast grade for larger sections.
Engineering plasticLow-friction, dimensionally stable engineering plastic — precision parts, gears, bushes, manifolds.
Engineering plasticUltra-high wear + impact resistance, self-lubricating — wear strips, guides, chute liners, star wheels.
Engineering plasticTransparent and extremely impact-resistant — machine guards, glazing, light covers. Scratches unless hard-coated; attacked by solvents.
