Brown alumina adopts bauxite and hard coke as the major materials, which are melted in arc furnace and turned into brown alumina, in brown color and in the hardness of HV1800-2200. Its toughness is higher than carborundum. It is fit for milling, grinding, surface finishing, high-precision manufacturing, and can serve as high-grade fire-resistant material.
¡¡¡¡It can also be used in manufacturing ceramics, resin, rubber combined milling tools and other milling tools with the substance coated on the outer surfaces.