Pure Tungsten

Tungsten Typical Applications

Filaments, vacuum furnaces, electrical contacts, glass-to-metal seals, supports, electrodes, cathodes and anodes, electronics, radiation shielding, medical devices, x-ray targets, ion implantation parts, windings and heating elements for electrical furnaces, sputtering targets, heat shields, heat bodies, tungsten boats and crucibles.

Tungsten is a metal with a wide range of uses. Tungsten Alloy has the highest melting point, lowest vapor pressure and highest tensile strength at temperatures above 1650 degrees Celsius of all metals. It can only be attacked slightly by most mineral acids. It’s coefficient of thermal expansion makes it a common choice for glass to metal sealing applications. Tungsten also has low emmisivity.

Physical Properties
Atomic weight183.85
Density19.3 g/cc
Melting Point3695 k 3410°C, 6191°F
Boiling Point5828K, 5900°C, 10031°F


Some Common Applications for Tungsten are:

  •     Television and light bulb filament
  •     Electrodes
  •     Furnace applications
  •     Electronics
  •     Nuclear applications
  •     Aerospace applications
  •     Glass to metal sealing
  •     Electrical Contacts
  •     Supports

Tungsten is extremely difficult to work with. It is difficult to turn and mill. Forming must be done at extremely high temperatures. Welding and riveting are not recommended. E.D.M. is the most practical way to machine Tungsten.

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