White aluminum oxide has white color and a little higher hardness and toughness comparing with the brown one. The grinding tools made of this material are suitable for fine grinding of high carbon steel, high-speed steel and stainless steel, Abrasive powder of finer grit size can also be used for precision casting and high-grade refractory. The WA can be used for vitrified wheels,for resinoid bond,and Conted abrasives, and also can be used for the blasting material and refractory material. The Physical and chemical composition is : Al2O3:99%min Na2O:0.4%max True density:3.9g/cm3