... reduce the deformation of the workpiece and have a good cutting techologyBrown aluminum oxideAGreyGreat toughness,high hardness,flesural strength.It can ... alumina oxide,better toughness, it should only used for coarse grinding.Green silicon carbideGCGreenIt mainly used for carbide and other tools ... cast iron, bronze, brass, glass, ceramics, etc.aluminum oxide abrasive grinding wheel