diamond wheels are applied to process the hard brittle metal material and non-metal material, such as cemented carbide, cast iron, ceramic, glass, pcd & pcbn, gem, ferrite, refractory materials, thermal spray coated articles etc.\n\ncbn wheels are applicable in processing hard metal material with high toughness and strength, such as high-speed steel, tool steel, die steel, stainless steel, cast iron, titanium alloy etc. d75*t25*x3*u6*h20.