... material 1,sic content more then 98% 2.grit: from F12 to F3000 3,manufacturer Hot selling !!black silicon carbide ... grinding material1,sic content more then 98% 2.grit: from F12 to F3000 3,manufacturer4, refractory,abrasives,grinding material,polishing ... main raw materials. Its hardness is between fused alumina and synthetic diamond. Mechanical intensity of it is higher than fused alumina. It ...