... 2.Al2O3:98.5% 3.Usage:abrasive and polish 4.High density and purity white fused aluminaDetailed Product Description SizeAl2O3Fe2O3Na2O+ ... hardness, such as high carbon steel ,allor steel, and high speed steel.Its non-abrasive uses are precision ... ,spray coating material ,catalyat carrier ,high temperature ceramic ,and super refractory material,etc. white fused alumina for polish and abrasive