Tungsten Boat (High Purity W Boat) offer high electrical conductivity ,possess low vapor pressures

Tungsten is a chemical element with the symbol W and atomic number 74. Tungsten is a rare metal that exists naturally on the earth. It is almost combined with other elements in the compound rather than alone. Its important ores include wolframite and scheelite.

STP stage: solid

Appearance: gray white, glossy

Melting point: 3695 K (3422 ° C, 6192 ° f)

Boiling point: 6203 K (5930 ° C, 10706 ° f)

Density (near room temperature): 19.3 g / cm3

Liquid (melting point): 17.6 g / cm3

Melting heat: 52.31 kJ / mol

Heat of vaporization: 774 kJ / mol

Molar heat capacity: 24.27 J / (mol · K)

application

About half of tungsten is used in the production of hard materials (i.e. tungsten carbide), and the rest is mainly used in alloys and steels. The amount of other compounds is less than 10%. Due to the high ductile brittle transition temperature of tungsten, its products are usually manufactured by powder metallurgy, spark plasma sintering, chemical vapor deposition, hot isostatic pressing and thermoplastic route. A more flexible alternative to manufacturing is selective laser melting, which allows the creation of complex three-dimensional shapes.