Brown corundum has strong crushing resistance, oxidation resistance, corrosion resistance and higher toughness than white corundum. High hardness, good toughness, cheap, Brown corundum grinding wheel is the largest amount of grinding tools, the most widely used one. When in use, high-speed rotation, can metal or non-metal parts of the outer circle, internal circle, plane and all kinds of surface rough grinding, semi-fine grinding and fine grinding, as well as slotting and cutting. Suitable for common steel grinding, free grinding, rough grinding, but also can grind high tensile strength of metals, such as carbon steel, alloy steel, malleable iron, hard bronze general grinding, cutting, free grinding.