Brown fused alumina polishing Brown aluminum oxide crystals is made of bauxite/anthracite coal, and smelted in electric-arc furnace of high temperature more than 2000degrees.Abrasives tools made by brown fused alumina are suitable for metal with high tensile (like:steel, malleable iron, bronze etc).and suitable for grinding, polishing, blasting, precision casting etc.Brown aluminum oxide crystal is also used for refractory material. Brown aluminum oxide crystals with characteristics like: high purity, good crystalline liquidity, low coefficient of linear expansion, corrosion resistance, high temperature, high strength. Chemical analysis: Al2O3(min) 92% SiO2(max) 2% Fe2O3(max) 2% TiO2(max) 4% Physical characteristics: color Brown Mohs Hardness 9.0 Melting point 2250â?? Maximum service temperature 1850â?? Bulk density 1.53-1.99g/cm3 Specific gravity 3.6-3.9g/cm3 Purpose: 1.grinding for konescope/glass/monocryst alline silicon/lens/jadeware 2.abrasion-proof material for expressway/airstrip/dock/ parking lot/stadium 3.bonded abrasives and coated abrasives 4.surface preparation and finishing 5.Thermal Spraying(Plasma Spraying) 6.Super Refractories, Ceramics and Tiles 7.Lapping & Micro-blasting applications Other models: Grain 0-1mm 1-3mm 3-5mm 5-8mm Fine powder 0-100mesh 0-200mesh 0-320mesh Grit 8# 10# 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220# Micro powder (FEPA)F230 F240 F280 F320 F360 F400 F500 F600 F800 (JIS) #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000
