White fused alumina powder 1200 microgrit White fused alumina powder microgrit was made from the high quality alumina by melting above 2000 °C in the electric arc furnace and cooling. White fused alumina powder microgrit is white with the main crystal phase alpha-Al2O3.The white fused alumina powder microgrit produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved. Chemical Compositions AL2O3: 99.2%min Fe2O3: 0.07%max Na2O: 0.30%max SiO2: 0.15%max Physical Properties Bulk Density: 1.78g/cm3 True Denstiy: 3.95g/cm3 Mohs Hardness: 9.0 Micro Hardness: 21600-22600kg/mm3 Melting Point: 2250 °C Application 1.Bonded abrasives and coated abrasives 2.floor/wall laminated 3.Thermal spraying(plasma spraying) 4.lapping & micro-blasting applications 5.optical glass polishing