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17719947765CBN is a very hard tool material second only to diamond. Generally, it works best when the material hardness is greater than 48HRC (CBN wears quickly when machining soft materials). When the temperature is as high as 2000 ℃, it has excellent red hardness. Although it is more brittle than cemented carbide and has lower thermal conductivity and chemical stability than ceramics, it has higher impact strength and fracture resistance than ceramic tools, and can also cut hard metals for machine tools with lower rigidity. Furthermore, the proper customized CBN tool can withstand the cutting load of high-power rough machining, the impact of intermittent cutting and the heat and wear performance required for fine machining
