Grade: YD777 Hardness: 92.0 Usage: Suitable for ductile iron and gray cast iron. Processing of manganese steel. Hardened steel and other hard materials. Tungsten steel main ingredient is tungsten carbide, titanium carbide (TiC) and cobalt. Their grades by the "YT" ("hard titanium" word Pinyin prefix) and the average content of titanium carbide composition. For example, YT15, represents the average WTi = 15%, the rest of the content of tungsten carbide and cobalt titanium tungsten carbide cobalt. Tungsten steel mill is good. Carbide cutting tools than high speed steel cutting 4 to 7 times the tool life is 5 to 80 times. Manufacture of molds, gauges, alloy tool steel, high life expectancy than 20 to 150 times. 50HRC be about cutting hard materials. (Pou Sheng Note) but brittle carbide can not be cutting, hard into the overall shape of the complex tool, often made of different shapes of blades, welding, bonding, mechanical clamping means mounted on the tool body, etc. or the use of specific mold.