The emergence of CBN abrasives has led to a revolution in grinding technology. It can withstand high temperatures of 1300℃~1400℃, is chemically inert to iron group elements, has good thermal conductivity, high removal rate when grinding steel, high grinding ratio, and abrasive tools. Long life, it is the best abrasive for grinding hardened steel, high-speed steel, high-strength steel, stainless steel and heat-resistant alloys with high hardness and toughness.