Introduction white corundum:  White fused alumina was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase alpha-Al2O3.It is suitable for surface beautification of glass and metal, and can also be used as raw material for sandblasting and rust removal. Chemical Composition AL2O3 99.5; Fe2O3 0.05; Na2O 0.30; SiO2 0.03 Main Physical Properties Mohs hardness:9 Bulk density:1.75-1.95g/cm3 Real density:3.95 Melting point:2250 Application Bonded abrasives and coated abrasives Floor /wall laminates Thermal spraying Lapping µ-blasting applications Surface preparation and finishing Super refractories,ceramics and tiles Brake linings