Has a high hardness and wear resistance. CBN single crystal microhardness of HV8000 ~ 9000, is currently known as the second high hardness of the material, PCBN composite sheet hardness is generally HV3000 ~ 5000. So it is used to process high hardness materials with higher wear resistance than hard alloy and ceramic, can reduce the size of large parts processing or size dispersion, especially for high degree of automation equipment, can reduce the tool change Adjust the knife to assist the time, so that its performance is fully exploited.