Tungsten Carbide Grade Characteristics Grade Density g/cm3 TRS M/Pa Hardness HRA Performance & Application YG3X 15.2 1800 94.2 Most of the material used some buttons for precussion bit to cut soft and medium hard formations. YG6X 15.1 2200 93.8 Good wear resistance used for hard wood and processing wood. Aluminum section bar, brass rod ect. YG10C 14.9 1700 93.4 High resitance to bonding. Maching of refractory alloys, stainless steel and high managese steel ect. YG13X 14.9 4000 92 Wear resistance and strength comparatively higher, suitable for processing cast iron, metal. YK10 14.5 3400 89.1 For coring crowns, electric coal drill bits, coal cutting picks, and cutting for tools. YK20 14.4 2550 87.2 Largely for inserts and buttons of precussion bits to cut medium-hard and very hard formation. YK30 14.4 2550 87.2 Mainly used for indu...