Carbide alloy, also known as the cemented alloy, refers to a sintered composite material composed of at least one metal carbide.
Tungsten carbide, titanium carbide, and tantalum carbide are common components of the carbide alloy. The grain size of the carbide component (or phase) is usually between 0.2 to 10 microns, and the carbide grains are bonded together using a metal binder. The binder usually refers to the metal cobalt (Co), but for some special applications, nickel (Ni), iron (Fe), or other metals and alloys can also be used. The composition combination of a pending carbide and binder phase is called "mark".
The classification of carbide alloy is carried out according to ISO standards. The basis of this classification is the material type of the workpiece (such as P, M, K, N, S, H marks). As for the binder phase component, its strength and corrosion resistance are mainly used.
The matrix of carbide alloy is composed of two parts: One part is the hardening phase; The other part is the bonding metal. The bonding metal is generally iron group metals, and cobalt, nickel and titanium are commonly used. So there are tungsten-cobalt alloys, tungsten-nickel alloys and tungsten-titanium-cobalt alloys.
Tungsten-containing steels include high-speed steel and certain hot-work die steels. Tungsten in the steel can significantly improve the hardness and heat resistance of the steel, but the toughness will drop sharply.
The main application of tungsten resources is also cemented alloy, that is, carbide alloy. Cemented alloy is called the teeth of modern industry, and carbide alloy products are widely used.