ZIRCAR Refractory Composites Inc.

Refractory Sheet Type RSLE-57 is a low-expansion, high-strength reinforced silica matrix composite. The material is designed for use as a high-strength insulator in induction hot press applications. A low thermal expansion coefficient and high hot strength combine to give the material increased thermal shock resistance. The material exhibits a coefficient of expansion 0.3 °- 10-6 ºC, which provides resistance to the thermal shock up to 1200ºC (2192ºF) in an oxidizing atmosphere and permits its use with rapid variation in temperature in that zone. Beyond that temperature, it transforms into a crystalline structure while maintaining its properties up to 1650ºC (3002ºF) providing there is no significant fall in temperature. At temperatures above this, the material will exhibit surface glazing.