The hardness of tungsten carbide is very high, it is one of the materials with the highest hardness among metals, and its Mohs hardness can reach 9-9.5. This makes tungsten carbide an ideal material for the manufacture of high hardness tools and knives.
Tungsten carbide is usually a material mixed with metal elements such as tungsten carbon and binders such as cobalt and nickel, and its hardness is generally around 8-9. Among them, tungsten carbide is one of the components with the highest hardness in cemented carbide, and its Mohs hardness can reach 9-9.5, so it is widely used in the manufacture of high hardness tools and knives. The cemented carbide with more cobalt in the composition has better corrosion resistance and wear resistance.
The hardness of hard alloy is HRA89-92.5, which is very high, so it is difficult to make complicated shaped utensils. The world’s first kind of hard alloy is from 1923, when the German scientist Schloetter suddenly idea, tungsten carbide powder added 10% ~ 20% cobalt, made tungsten carbide and cobalt new alloy.
Carbide has a hardness of 86 to 93HRA
Hard alloy is made of a variety of refractory metal carbide as raw materials, its good hardness, wear resistance and corrosion resistance, known as industrial teeth. But its brittleness is large, can not be machining, difficult to make the shape of complex items.
The first hard alloy from 1923, German scientist Schloetter. The invention of tungsten carbide and cobalt new alloy, hardness is very high, is the world’s first kind of hard alloy, 1929, the American scientist Schwarzkopf to improve, hard alloy gradually developed.
Hard alloy hardness is much higher than common metal, so its use is mainly used to cut common metal. With the rapid expansion of the Chinese automobile industry, the demand for cutting tools is increasing, and the market for cemented carbide is also expanding
Post time: May-09-2023
