Brown fused alumina is fused and crystalized under high temparature from a mixture of bauxite and other raw material. It is characterized by its high hardness ,good toughness and sharp shapein size. Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as carbon steel,general-purpose alloy steel,annealed malleable iron and hard bronze,etc.It also can be used as refractory materials. Origin CN