ZIRCAR Refractory Composites Inc.
Refractory Sheet Type RS-99 is a high-strength, high-temperature ceramic composite material, which can be machined using standard tooling. The fiber-based ceramic material has greater than 99% alumina purity and can be used at temperatures to 1650C (3000F). The composite can withstand over 500 hours of continuous submersion in molten aluminum at 750C (1380F) with no wetting and no degradation in properties. The high-alumina content makes it suitable for use in high vacuum, reducing atmospheres and other applications where silica cannot be tolerated, such as setters for PM and MIM applications.