Thermoplastic comparison
Acrylic (PMMA) vs PVC, plasticized (flexible, PVC-P)
Every value below is a typical room-temperature figure with its source, test method and conditions — the same dataset that drives the calculators.
| Property | Acrylic (PMMA) | PVC, plasticized (flexible, PVC-P) | Difference |
|---|---|---|---|
| Density | 1.19 g/cm³ | 1.4 g/cm³ | PVC, plasticized (flexible, PVC-P) — 18% higher |
| Young's modulus E | 3.1 GPa | 1.4 GPa | Acrylic (PMMA) — 2.2× higher |
| Tensile strength | 72 MPa | 16 MPa | Acrylic (PMMA) — 4.5× higher |
| Glass transition Tg | 105 °C | 75 °C | Acrylic (PMMA) — 30 °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.