1.What is tungsten alloy used for?
Steel Industry: Tungsten is added to steel to form alloys. High - speed steel, which contains 9 % - 24 % tungsten, is used to make tools like drill bits and milling cutters due to its high hardness and wear resistance. Alloy tool steels such as chrome - tungsten - silicon steel and chromium - tungsten - manganese steel, which contain different percentages of tungsten, are also used in tool manufacturing.
Heat - Resisting Alloys: Tungsten is a component of many hot - strong alloys. For example, the CoCrW alloy, which contains 3 % - 15 % tungsten, is used for strongly wear - resistant parts like the valves of aero - engines and turbine impellers.
Cemented Carbides: Tungsten carbide - based alloys, containing 85 % - 95 % tungsten carbide and 5 % - 14 % cobalt, are widely used in cutting tools, mining tools, and drawing dies due to their high hardness and wear resistance.
Other Applications: Tungsten - copper alloys and tungsten - silver alloys have good electrical and thermal conductivity and are used to make working parts of knife switches and circuit breakers. Tungsten heavy alloys, with 90 % - 95 % tungsten, are used in the manufacture of gyroscope rotors and aircraft balance hammers. Doped tungsten alloys are used in the production of electronic tubes and X - ray technology.
2.What are the feature of tungsten?
. Tungsten - based alloys can maintain high hardness and strength at high temperatures, such as tungsten - containing high - speed steel and cemented carbides. Tungsten heavy alloys have high density and good mechanical properties, which are suitable for applications requiring high strength and stability
3.What are the weakness of tungsten?
Brittleness: Tungsten is a brittle material, which means it can crack or break under stress. Excessive force or pressure can cause deformation or even fracture.
Oxidation: Tungsten can oxidize when exposed to air or other oxidizing agents. The formed tungsten oxide is a weaker material than pure tungsten, which will affect the strength and durability of the material.
Thermal Shock: Tungsten is vulnerable to thermal shock. Rapid heating or cooling, such as sudden temperature changes, can cause cracking or deformation.
Chemical Attack: Although tungsten is resistant to many chemicals, it can be damaged by certain acids and alkalis. Strong acids or alkalis can cause corrosion and weakening.
