Thermoplastic comparison
PETG (glycol-modified PET) vs Polysulfone (PSU)
Every value below is a typical room-temperature figure with its source, test method and conditions — the same dataset that drives the calculators.
| Property | PETG (glycol-modified PET) | Polysulfone (PSU) | Difference |
|---|---|---|---|
| Density | 1.3 g/cm³ | 1.24 g/cm³ | PETG (glycol-modified PET) — 5% higher |
| Young's modulus E | 2.2 GPa | 2.5 GPa | Polysulfone (PSU) — 14% higher |
| Tensile strength | 53 MPa | 70 MPa | Polysulfone (PSU) — 32% higher |
| Glass transition Tg | 81 °C | 185 °C | Polysulfone (PSU) — 104 °C higher |
Where these numbers come from
- MakeItFrom.com materials database — typical grade values
- CAMPUS plastics database — typical grade datasheet values (campusplastics.com)
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.