Tungsten carbide components are commonly joined to steels and other materials by brazing. Brazing involves placing a metallic braze alloy along with a fluxing agent between the components to be joined and then heating the assembly until the braze alloy melts and flows to fill completely the small gap between the two components. Soldering is similar to brazing, but is performed at lower temperatures with lower melting point alloys. Soldered joints, however, generally lack the mechanical or thermal strength to satisfy the requirements of many applications.
Tungsten carbide tips and blanks are four times harder than titanium, twice as hard as steel, virtually unscratchable, and have been widely used for decades in industrial applications as cutting tools, mining machinery, and rocket engine nozzles. The extreme hardness of tungsten carbide tips and blanks makes them useful in the manufacture of cutting tools, abrasive and bearings, as a cheaper and more heat-resistant alternative to diamond. Tungsten carbide tips and blanks are also used as scratchy-resistant material for jewelry including watch bands and wedding rings.