Brown  fused  alumina

Corundum is bauxite, coke ( anthracite ) as the main rawmaterials, high temperature melting in an electric arc furnace,crystalline form, it has high hardness, toughness, particle sharp,grinding force, high temperature resistance, high efficiency, isthe quality of the abrasive material and senior refractoriesAbrasives tools made of it. Suitable for grinding, higher tensilestrength metals, cutting, grinding steel, carbon steel, alloysteel, malleable steel general. Can also be used as refractorymaterial, widely used in steel, chemical and other industries  bjtm5899 126.com