... carbide fiber disc used for the work pieces made of materials Chilled steel, 2High-speed steel, High-carbon steel 1.silicon carbide ... quantity of ZrO increases.2.Only no harder than Boron carbide and Diamond, friable, its girt is sharp, and Thermal ... fused aluminaATanhigh rigidity, strong flexibility, low price, can be used widelysuitable for normal steel grinding, grinding, rough grinding, higher ...