Brown fused alumina (A)is produced from bauxite, charcoal,iron chip by being fused under high temperature in an electric arc furnace,It is characterized by high tensibility and has amicrohardness of 1800-2200kg/mm2.The abrasive tools made,normal alloy steel, malleable cast iron and hard bronze,etc.Brown fused alumina can also be used for making fine quality refactories etc