Composed mostly of tungsten carbide (WC) fragments bonded with a metal binder, such as cobalt, cemented carbide integrates the stamina of tungsten with the sturdiness of other metals. The structure of cemented carbides can be customized to fit specific applications, leading to the production of ranges like YG20, yg6, and http://pandora.nla.gov.au/external.html?link=https://www.wolframcarbide.com/ja/%E8%A3%BD%E5%93%81/