Engineering Plastic
Polycarbonate (PC)
Nearly unbreakable and optically clear: very high impact strength and good heat resistance. Machines and thermoforms well; scratches easily.
Last verified: 2026-07-10
| PolymerChemistry / common trade name. | Polycarbonate |
|---|---|
| Density(g/cm³)Typical specific gravity. | 1.2 |
| Tensile(MPa)Typical tensile strength (unfilled grade). | 65 |
| Max service(°C)Typical continuous service temperature. | 120 |
| Water abs.(%)Typical 24 h water absorption. | 0.15 |
| Machinability | Good |
| Known forThe property it's usually chosen for. | Impact strength + transparency |
- Typical uses: machine guards, transparent covers and windows, manifolds, structural clear parts.
- Exceptional impact resistance (far tougher than acrylic) with good temperature resistance.
- Surface scratches easily and is attacked by some solvents; anneal after machining to relieve stress.
Other engineering plastics
Sources
- Manufacturer datasheets (typical properties for common unfilled grades)
- ASM International — Engineering Plastics (Engineered Materials Handbook)