According to the main chemical composition, cemented carbide can be divided into tungsten carbide-based cemented carbide and titanium carbide (TiC (N))-based cemented carbide. Tungsten carbide-based cemented carbide includes three types: tungsten cobalt type (YG), tungsten cobalt titanium type (YT), and rare carbide added type (YW). They each have their own advantages and disadvantages. The main components are tungsten carbide (WC), titanium carbide (TiC), tantalum carbide (TaC), niobium carbide (NbC), etc. The commonly used metal bonding phase is Co. Titanium carbide (nitride)-based cemented carbide is a cemented carbide with TiC as the main component (some have other carbides or nitrides added), and the commonly used metal bonding phases are Mo and Ni.