Tungsten Mill Products

Tungsten

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TUNGSTEN

Tungsten is a greyish-white lustrous metal which is solid at room temperature.  It has the highest melting point, lowest vapor pressure at temperatures above 1650 °C, the highest strength, and the highest hardness among all pure metals and alloys.  Pure tungsten metal was first isolated by two Spanish (de Elhujar) brothers in 1783.  The word “tungsten” comes from a Swedish “tung sten”, meaning “heavy stone.”  Tungsten’s chemical symbol “W” comes from the element’s other name, wolfram, which is derived from wolframite, the mineral the element was discovered in.

 

TUNGSTEN APPLICATIONS

  • Lighting. Tungsten has been used extensively as the filament in traditional incandescent light bulbs.  Due to low energy efficiency, high heat generation, and short service life, these light bulbs have been gradually replaced by fluorescent and lately by LED lights.
  • Furnace parts and High temperature alloys.  Due to high melting points and high strength, tungsten and its alloys are used in many high-temperature applications, such as arc-welding electrodes, heating elements and shield in high-temperature vacuum furnaces, and turbine blades in generators and aircraft engines.
  • X-ray targets.  Tungsten is the most used target material in x-ray generation.  Tungsten has a high atomic number which increases the intensity of the x-rays at a set of voltage and current.  Its high melting point also allows the x-ray anode to become white hot.
  • Radiation shields.  Tungsten alloy combines the advantages of high density, high radiation absorption, high melting point and good corrosion resistance, is an ideal material to shield from various radiations.
  • Armor penetrators.  The weapon uses the kinetic energy of a projectile to destroy enemy targets.  This energy is a function of the mass and its velocity when reaching the target (terminal velocity).  The mass is dependent on the density, and the terminal velocity is dependent on both the density and melting temperature.  Tungsten has both advantages.
  • Tungsten carbide is extremely hard and is an ideal material for cutting and drilling tooling used in metal-working, mining and oil drilling industries.  The material is also used for jewelries such as rings, which have lustrous appearance. Tungsten carbide is made by mixing tungsten and carbon powder and heating to around 2200°C.

 

TUNGSTEN ALLOYS

  • Tungsten heavy alloys are 90% to 97% pure tungsten in a matrix of nickel and copper, or nickel and iron. Pure tungsten is very difficult to machine or fabricate.  Addition of these elements improves both the ductility and machinability of the alloys, while retains its high density.  These heavy alloys are ideal for high density or radiation shielding applications where machining is required.
  • Tungsten copper alloys.  In addition to high density, the alloys also have high thermal conductivity, high electrical conductivity, high arc resistance or low thermal expansion.  These properties are perfect for applications such as electrical contacts, heat sinks, and resistance welding electrodes.

 

TUNGSTEN FROM ADMAT

Admat offers pure and alloyed Tungsten milled products, in purity up to 99.95%. These include strip, sheets, plates, wire, rods, and tubes.

Our production facilities have the capabilities to supply machined parts made specifically to your drawings and specifications.

 

AVAILABLE TUNGSTEN FORMS AND SIZES

  • Plate 0.04″ – 0.60″ Thick x 13.78″ Wide x Length
  • Sheet 0.004″ – 0.789″ Thick x 0.40″-11.81″ Long
  • Wire 0.031″ – 0.125″ Diameter x Length
  • Rod 0.041″ – 4.72″ Diameter x Length
  • Strip 0.002″ (min) Thick x Width x Coiled
  • Blanks Custom Sizes Available
  • Tube Custom Sizes Available

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