CLAYRACᵀᴹ for investment casting

A tough chamotte for high refractoriness and high accuracy

Our CLAYRAC product range is specifically designed for the production of ceramic molds for investment casting, where it can be used as stucco or flour in either alcohol or water-based processes. As an aluminosilicate, it lends itself particularly well to molds that require high refractoriness and creep resistance, such as in casting of steel and titanium alloys. We recommend CLAYRAC as an excellent backup material, valued for its dimensional accuracy and reliable Particle Size Distribution (PSD) and mineralogy.

This standard chamotte is produced by calcination in a rotary kiln of kaolinitic clay from the Charentes basin in south-western France, and is formed from the weathering and transportation by water of parent rocks which are deposited in ancient river basins from where it is now extracted. Our product range includes raw clays, shredded clays or dried and milled clays with alumina contents varying up to 45%.