White fused alumina spray powder for lost wax casting

White fused alumina is a kind of refractory powder. It is resistant to the high temperature of hot casting steel liquid. Beside, white fused alumina is of good chemical stability. It is suitable for work as spray powder with lost wax casting process. So it can get a strong molding on the surface of the wax. The proper powder size will improve any leak of melting steel.

The commonly used grit sizes of WFA casting powder are 100um,50um,40um and 20um.