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Polyetherimide (PEI) is an amorphous high-performance polymer. It is heat and hydrolysis resistant and can withstand multiple autoclaving cycles.
Its characteristics are similar to those of polyetheretherketone (PEEK) but PEI is less temperature-resistant and has lower impact strength.
| Property | Measure Low | Measure High |
|---|---|---|
| Specific gravity | 0.0459 lb./in.3 (1.27 g/cc) | 0.0459 lb./in.3 (1.27 g/cc) |
| Melting point | Not Applicable | Not Applicable |
| Glass transition temperature | 410°F (210°C) | 421°F (216°C) |
| Tensile strength at break | Not Available | Not Available |
| Elongation at break | 60% | 80% |
| Hardness durometer (Shore A) | 125 | 125 |
| Hardness durometer (Shore D) | 109 | 112 |
| Water absorption @ 24 hours | 0.25% | 0.25% |
| Sterilization | Cold sterilization Dry heat Ethylene oxide (EtO) Gamma radiation Steam autoclaving |
This material data sheet is presented for reference only. For a specific application and environment, characteristics and performance may vary. Product design and suitability for use are the sole responsibility of Microspec’s customer. Microspec strongly urges customers to consult with the material manufacturer.