Composed primarily of tungsten carbide (WC) fragments bonded with a metal binder, such as cobalt, cemented carbide combines the stamina of tungsten with the durability of other metals. The structure of cemented carbides can be customized to fit particular applications, leading to the production of varieties like YG15, yg20, and http://king-wifi.win//index.php?title=terkelsenhougaard7551