Aerospace alloys; Alloys for electronic package; Alloys for heat sinks; Anti-armor alloys; Circuit breakers; Contacts and electrode materials; Contacts in a protective atmosphere; Electrodes for gas sensors;
|Molecular Weight||183.85 g/mol|
|APS||<800 um (Can be Customized)|
|Melting Point||3410 °C|
|Boiling Point||5900 °C|
Tungsten (W) Powder
The tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. The tungsten name derives from the former Swedish name for the tungsten ore of scheelite, tungsten, or “heavy stone”. Tungsten is a rare metal found naturally on Earth almost exclusively combined with other elements in chemical compounds instead of only. It was identified as a new element in 1781 and was first isolated as a metal in 1783. Its major minerals include wolframite and scheelite.
The free element is notable for its strength, especially for the fact that it has the highest melting point of all the elements discovered, melting at 3422 ° C (6192 ° F, 3695 K). It also has the highest boiling point, at 5930 ° C (10706 ° F, 6203 K) . Its density is 19.3 times that of water, comparable to that of uranium and gold, and much higher (about 1.7 times) than that of lead. Polycrystalline tungsten is an inherently fragile and hard material (under standard conditions, when not combined), which makes the job difficult. However, pure monocrystalline tungsten is more ductile and can be cut with a hard steel saw.
Numerous tungsten alloys have numerous applications, including filaments of incandescent light bulbs, X-ray tubes (such as filaments and lenses), electrodes in TIG welding, superalloys, and radiation shielding. The hardness and high density of tungsten give military applications in penetrating bullets. Tungsten compounds are also often used as industrial catalysts.
Tungsten is the only metal in the third transition series that is known to occur in the biomolecules present in some species of bacteria and archaea. It is the heaviest element known to be essential for any living organism. Tungsten interferes with the metabolism of molybdenum and copper and is somewhat toxic to animal life.