... speed steelCarbideBlack Silicon CarbideSiCSiC>95%2840-3320BlackCrisp, sharp, good thermal and electrical conductivityCast iron, brass, aluminum, non ... electrical conductivityHigh HardCubic Boron NitrideCBNCBN8000-9000BlackThermoduric, abrasive resistance, good electrical conductivityHard alloy, stainless steel, high-alloy steelArtificial ... manufactureall kinds ofdiamondabrasive tools. grinding wheels