Tungsten wire has many significant characteristics. The following is a detailed introduction to some of its main characteristics:
1. High density:
The density of tungsten wire is extremely high, about 19.3g/cm³, which is much higher than other metal materials such as steel and copper. The high density makes tungsten wire have higher strength and hardness in terms of weight and volume, which is conducive to the manufacture of lighter and stronger parts and structural materials.
2. High melting point:
The melting point of tungsten wire is as high as 3410℃, which is much higher than other metal materials such as iron and copper. The high melting point makes tungsten wire have excellent stability and heat resistance in high temperature environment, and is suitable for the manufacture of high temperature parts and structural materials, such as aerospace, energy and chemical industries.
3. High strength and hardness:
Tungsten wire has high strength and hardness, and its tensile strength can reach more than 1500MPa and its Brinell hardness can reach more than 800HB. High strength and high hardness make tungsten wire have excellent performance in load-bearing and wear resistance, and it is suitable for the manufacture of wear-resistant and impact-resistant parts such as tools, drills, and milling cutters.
4. Good conductivity:
Tungsten wire has good conductivity, and its resistivity is about 5.3μΩ·cm, which is similar to copper. Good conductivity makes tungsten wire widely used in electron beam processing, electrode manufacturing and other fields.
5. Low thermal expansion coefficient:
Tungsten wire has a low thermal expansion coefficient of only 4.5×10^-6/℃. The low thermal expansion coefficient makes tungsten wire have good stability and thermal shock resistance when the temperature changes, and is suitable for manufacturing precision instruments and optical components that require high-precision alignment.
6. Good corrosion resistance:
Tungsten wire has good corrosion resistance and can maintain stable performance in various corrosive media. This feature makes tungsten wire widely used in chemical industry, marine engineering and other fields, and is used to manufacture corrosion-resistant structural materials and sealing materials.
7. Good toughness:
Although tungsten wire has the characteristics of high density, high strength and high hardness, it also has good toughness. This makes tungsten wire not easy to break or fragment when subjected to shock and vibration, and can maintain stable performance.
In short, tungsten wire has the characteristics of high density, high melting point, high strength and high hardness, as well as good electrical conductivity, low thermal expansion coefficient, good corrosion resistance and toughness. These characteristics make tungsten wire widely used in many fields, such as manufacturing high-temperature alloys, filaments, electrodes, tools and nuclear industry. At the same time, in the field of scientific research, tungsten wire is also widely used as a high-performance material.
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