PCD hardness of up to 8000HV, 80 to 120 times for the carbide; thermal conductivity of 700W / mK, 1.5 to 9 times for the carbide, or even higher than the PCBN and copper, PCD cutting tool heat transfer quickly; The coefficient of thermal expansion is only 0.9 × 10 ^ (-6) to 1.18 × 10 ^ (- 6), which is only equivalent to the hardness of the hard alloy. The friction coefficient of the cemented carbide is 0.4 ~ Alloy 1/5, so the tool thermal deformation is small, high precision; and its non-ferrous metals and non-metallic materials, the affinity is very small, the chip is not easy to stick in the processing process to form a chip edge on the tip.

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