Polybutylene theraphthalate (PBT) is a semi-crystalline engineering thermoplastic. It has high heat resistance, stiffness and hardness, excellent slip/fictional properties and good resistance to chemicals. PBT has high dimensional stability and mechanical strength for complex thin walls. It can be colored.
| Property | Measure Low | Measure High |
|---|---|---|
| Specific gravity | 0.0473 lb./in.3 (1.31 g/cc) | 0.0473 lb./in.3 (1.31 g/cc) |
| Melting point | 437°F (225°C) | 437°F (225°C) |
| Glass transition temperature | 140°F (60°C) | 140°F (60°C) |
| Tensile strength at break | Not Available | Not Available |
| Elongation at break | 200% | 200% |
| Hardness durometer (Shore A) | Not Applicable | Not Applicable |
| Hardness durometer (Shore D) | 78 | 78 |
| Water absorption @ 24 hours | 0.09% | 0.09% |
| Sterilization | Ethylene oxide (EtO) Gamma and E-beam radiation Steam autoclaving |