Precision Casting Alumina is specially used for ceramic slurry, to produce the ceramic molds or ceramic shells in Precision casting, also called investment casting or lost-wax casting.
It has high melting point (2050 degree), high density (3.9-4.0 g/cm2), and good thermal conductivity, low thermal expansion coefficient and good chemical stability. It is a high-quality investment casting refractory material. It could replace the expensive Zircon Sand in the using of Ceramics.

Typical Chemical analysis in wt.% (60-80#)