... Chilled steel, 2High-speed steel, High-carbon steel 1.silicon carbide fiber disc, has good flexibility, high Intensity and high Wear ... quantity of ZrO increases.2.Only no harder than Boron carbide and Diamond, friable, its girt is sharp, and Thermal ... of materials Chilled steel, High-speed steel, High-carbon steel,Chromium corundumPAPink,rose-red Sharp cutting, good edges holdout, durableSuitable for ...