Thermoplastic comparison
PTFE (Teflon) vs UHMW-PE (ultra-high-molecular-weight polyethylene)
Every value below is a typical room-temperature figure with its source, test method and conditions — the same dataset that drives the calculators.
| Property | PTFE (Teflon) | UHMW-PE (ultra-high-molecular-weight polyethylene) | Difference |
|---|---|---|---|
| Density | 2.17 g/cm³ | 0.94 g/cm³ | PTFE (Teflon) — 2.3× higher |
| Young's modulus E | 0.5 GPa | 0.8 GPa | UHMW-PE (ultra-high-molecular-weight polyethylene) — 60% higher |
| Tensile strength | 24 MPa | 49 MPa | UHMW-PE (ultra-high-molecular-weight polyethylene) — 2.0× higher |
| Melting point Tm | 327 °C | 130 °C | PTFE (Teflon) — 197 °C higher |
Where these numbers come from
- Callister & Rethwisch, Materials Science and Engineering, 10th ed.
- MakeItFrom.com materials database — typical grade values
Typical room-temperature values for learning and preliminary design; grades vary widely and a supplier datasheet always overrides a textbook figure. Confirm against the datasheet before design work.