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%|
Ethylene oxide (EtO)