PEEK is a unique semi-crystalline, high temperature engineering thermoplastic, is an excellent material for a wide spectrum of applications where thermal, chemical, and combustion properties are critical to performance. Especially significant, in this regard, is PEEK's ability to retain its flexural and tensile properties at very high temperatures–in excess of 482°F.  Unreinforced PEEK 450G offers the highest elongation and toughness of all PEEK grades.  Contact customer service for a complete list of physical, mechanical, thermal and electrical properties.