Thermoplastic comparison
Polylactic acid (PLA) vs PTFE (Teflon)
Every value below is a typical room-temperature figure with its source, test method and conditions — the same dataset that drives the calculators.
| Property | Polylactic acid (PLA) | PTFE (Teflon) | Difference |
|---|---|---|---|
| Density | 1.24 g/cm³ | 2.17 g/cm³ | PTFE (Teflon) — 75% higher |
| Young's modulus E | 3.5 GPa | 0.5 GPa | Polylactic acid (PLA) — 7.0× higher |
| Tensile strength | 50 MPa | 24 MPa | Polylactic acid (PLA) — 2.1× higher |
| Melting point Tm | 160 °C | 327 °C | PTFE (Teflon) — 167 °C higher |
Where these numbers come from
- Farah, Anderson & Langer, Adv. Drug Deliv. Rev. 107 (2016) 367–392 — comprehensive PLA property review
- MakeItFrom.com materials database — typical grade values
- Callister & Rethwisch, Materials Science and Engineering, 10th ed.
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.