High hardness and wear resistance of diamond cutting edge is very sharp blade roughness value, low friction coefficient, good anti-adhesion, high thermal conductivity, easy to stick the knife and BUE cutting, the machined surface good quality. In the processing of non-ferrous metals, the surface roughness up to R0.10? 0.05μ m, the machining accuracy of up to IT5 (hole IT6) above, effective in processing non-ferrous metal materials and non-metallic materials such as copper, aluminum, etc. non-ferrous metals and their alloys, ceramics,cutting wheel, sintered carbide, a variety of fiber and particulate reinforced composite materials, plastics, rubber, graphite, glass and all kinds of wear-resistant timber (especially solid wood and plywood, MDF and other composite materials ).
        Diamond's drawback is the poor toughness, low thermal stability, chemical reaction when in contact with the iron group elements (4C +3 of Fe → Fe3C4), carbonization (graphitization) at 700 ~ 800 ℃, generally does not apply to the processing of steel . When cutting nickel-based alloys, the same will wear quickly. Usually do not recommend the high melting point metals and alloys of diamond cutting tools. In addition, the diamond tool grinding is difficult and expensive. Table 1 lists the comparison of both the performance of diamond cutting tools and abrasive tools.