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.  The addition of glass fibers significantly reduces the expansion rate and increases the flexural modulus of PEEK. This grade is ideal for structural applications that require improved strength and stiffness, especially at temperatures above 300°F.  Contact customer service for a complete list of physical, mechanical, thermal and electrical properties.