What Is Tungsten Steel?

Tungsten steel (hard alloy) 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 500 ° C. It remains basically unchanged, and still has 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 usually between 0.2 and 10 microns, and the carbide grains are bonded together using a metal binder. Binder usually refers to metallic cobalt (Co), but for some special applications, nickel (Ni), iron (Fe), or other metals and alloys can also be used. The composition of a pending combination of carbides and binder phases is called a "brand".

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 composition of the binder phase mainly uses its strength and corrosion resistance.

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

Tungsten-containing steels, such as high-speed steels and some hot-working die steels, contain tungsten in steel, which significantly improves the hardness and heat resistance of the steel, but the toughness will decrease sharply.

The main application of tungsten resources is also cemented carbide, which is tungsten steel. Cemented carbide, known as the tooth of modern industry, is widely used in tungsten steel products.

The main problems existing in China's cemented carbide industry are as follows: First, the scale of enterprises is small, and the industry concentration is not high. According to incomplete statistics, the average annual production capacity of 199 cemented carbide companies is 176 tons, the average annual output is only 86 tons, and there are only 4 companies with an annual output of more than 1,000 tons.

Tungsten steel jewelry is composed of metal alloy \ tungsten carbide. Tungsten steel jewelry has high hardness, no wear, no deformation, no color change, and no allergy. Each tungsten steel ring is cut and polished like a diamond, using diamond tools. Tungsten steel ring is not like

Typical representative products of tungsten steel materials are: round bars, tungsten steel plates, tungsten steel strips, etc.

There are many reasons that affect the deformation and bending of tungsten steel products. The reasons for the deformation and bending of a certain product need to be analyzed on a case-by-case basis. Sometimes, one factor plays a role, sometimes multiple factors play a role.
The causes of deformation and bending of tungsten steel products can be analyzed from the following aspects:
1. Carbon gradient.
2. Cobalt gradient.
3. Temperature gradient.
4. Density gradient of pressed products.
5. Improper boat loading.
6. Shrinkage coefficient.