... Tungsten Copper Alloy and Tungsten Jewelries. *Cemented Carbide with high hardness, wear resistance, good strength and toughness, heat resistance, corrosion ... as a series of excellent performance, especially its high hardness and wear resistance, even if the temperature at 500 ... the Cobalt, such as by Artificial Khan, Nuclear Radiation Testing Requirements are in line with the body to wear, non- ...