A&M Group Limited

Tungsten

A greyish metal having a density of 19.3 g/cc and melting point of 3410 degC. These two properties alone make it one of the most important metals in use across a very wide range of service applications. It imparts toughness to special steels, has excellent high temperature strength making it useful in super-alloys, riveting heads, contact breakers and electrical filaments. Its high density provides weight in counter-balancing, ballast, projectiles and ionising radiation shielding. Its exceptionally high melting point is applied to welding, plasma and EDM electrodes. Tungsten also has a very low coefficient of thermal expansion which is made use of in semi-conductor heat sinks.

Compounds of tungsten possess many other unique properties that are used in cutting tools e.g. tungsten carbide (WC), catalysis, pigments and lubricants.

A&M Minerals offers tungsten powders and alloys thereof to various specifications. For further information refer to the following link:

Tungsten and Cobalt Powders

One of the principle minerals of tungsten of which the ore concentrate is generally to the following composition:

    WO3 - >65%

    As - 0.2 - 1.0%

    Ca - <1.0%

    P - <1.0%

    S - <0.7%

    SiO2 - <7.0%

    Sn - 0.2 - 1.0%

    Mo - <0.4%

    Cu - 0.08 - 0.4%