BFA Brown alumina price per ton BFA Brown alumina, low price per ton, is made of bauxite/anthracite coal,and smelted in electric-arc furnace of high temperature more than 2000 degrees.BFA Brown alumina are suitable for metal with high tensile like: steel, malleable iron,bronze etc).and suitable for grinding, polishing, blasting, precision casting etc.BFA brown alumina is also used for refractory material. Brown fused alumina with characteristics like: high purity, good crystalline liquidity, low coefficient of linear expansion, corrosion resistance, high temperature, high strength. color Brown Mohs Hardness 9.0 Melting point 2250℃ Maximum service temperature 1850℃ Bulk density 1.53-1.99g/cm3 Specific gravity 3.6-3.9g/cm3 Al2O3(min) 95 SiO2(max) 1.5 Fe2O3(max) 0.5 TiO2(max) 3