... steel, 2High-speed steel, High-carbon steel 1.silicon carbide fiber disc, has good flexibility, high Intensity and high ... the quantity of ZrO increases.2.Only no harder than Boron carbide and Diamond, friable, its girt is sharp, and ... .SpeciesCode No.colorfeaturesselectionbrown fused aluminaATanhigh rigidity, strong flexibility, low price, can be used widelysuitable for normal steel grinding, grinding, ...