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W

Tungsten is a metal with a wide range of uses, the largest of which is as tungsten carbide in cemented carbides.Cemented carbides (also called hardmetals) are wear-resistant materials used by the metalworking, mining, and construction industries.Tungsten metal wires, electrodes, and/or contacts are used in lighting, electronic, electrical, heating, and welding applications.Tungsten is also used to make heavy metal alloys for armaments, heat sinks, and high-density applications, such as weights and counterweights; superalloys for turbine blades; tool steels; and wear-resistant alloy parts and coatings.Tungsten composites are used as a substitute for lead in bullets and shot.Tungsten chemical compounds are used in catalysts, inorganic pigments, and high-temperature lubricants

Impurities

 

Grade W-1 W-2 W-4
Impurities (%max) Fe 0.0030 0.0040 0.0300
Si 0.0020 0.0020 0.0050
Ca 0.0020 0.0020 0.0050
Al 0.0020 0.0020 0.0050
Mg 0.0010 0.0010 0.0050
Ni 0.0020 0.0020 0.0500
Sb 0.0010 0.0010 0.0010
As 0.0015 0.0020 0.0020
Sn 0.0003 0.0005 0.0005
Mo 0.0040 0.0040 0.0500
P 0.0010 0.0010 0.0030
C 0.0030 0.0050 0.0100
O 0.0020 0.0020 0.0300
Application For tungsten alloys For mill products For alloying agents

 

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