Brown fused alumina is produced from high quality calcined bauxites in a pouring electric arc furnace. It is fused and purified in a high temperature over 2200 ℃ and followed by slow solidification. Brown fused alumina has high toughness and hardness, a high melting point, good chemical corrosion resistance and thermal conductivity. The content of alumina is over 95%. The good grinding ability, wide application, low price make Brown fused alumina the most basic abrasive material. Brown fused alumina is often used as replacement in other abrasives’ absence. Physical index: Color Brown Basic Mineral α- Al2O3 Crystal system Hexagonal True Density 3.90g/cm3 Bulk Density 1.68-1.95g/cm3 Mosh hardness 9.0 Microhardness HV1800-2200 Please do not hesitate to contact us for details of products