Views: 4 Author: Site Editor Publish Time: 2018-12-19 Origin: Site
Wolfram/Tungsten, element symbolis W, atomic number is74 in the periodic table, is a VIB group metal.
The density is 19.35 g / cm 3 , close to Gold, the melting point is 3422 ° C, the boiling point is 5927 °C
Tungsten is a silver-white metal that looks like steel.Tungsten has the highest melting point and the evaporation velocity is slow.
The chemical properties of yungsten is stable. At normal temperature,It doesn't react with air and water.
It doesn't react with any concentration of hydrochloric acid, sulfuric acid, nitric acid or hydrofluoric acid,
but it can be quickly dissolved in a mixed acid of hydrofluoric acid and concentrated nitric acid.
Tungsten can be made into tugsten wire mesh. Tu wire mesh (UNS R07005 wire mesh) is usualloy used for medical devices, electrodes, vacuum heating elements and electronic.
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