Tungsten steel manufacturer: tell you what is the definition of tungsten steel?

       Tungsten steel (tungsten carbide) has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance, even at a temperature of 500 ° C. It remains basically unchanged, and still has a high hardness at 1000 °C.



 



Tungsten steel, also known as cemented carbide, refers to a sintered composite material containing at least one metal carbide. Tungsten carbide, cobalt carbide, niobium carbide, titanium carbide, and tantalum carbide are common components of tungsten steel. The grain size of the carbide component (or phase) is typically between 0.2-10 microns, and the carbide grains are held together using a metallic 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. A compositional combination of carbide and binder phase to be determined is referred to as a "grade".



 



The classification of tungsten steel is carried out according to ISO standards. This classification is based on the material type of the workpiece (such as P, M, K, N, S, H grades). The binder phase composition is mainly used for its strength and corrosion resistance.



 



The matrix of tungsten steel consists of two parts: one part is the hardening phase; the other part is the bonding metal. Binder metals are generally iron group metals, commonly used cobalt and nickel. Therefore, there are tungsten-cobalt alloys, tungsten-nickel alloys and tungsten-titanium-cobalt alloys.



 



For steels containing tungsten, such as high-speed steel and some hot work die steels, the tungsten content 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 carbide, that is, tungsten steel. Carbide, known as the teeth of modern industry, is widely used in tungsten steel products.