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Tungsten
W
Atomic weight 183.84

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Tungsten

Tungsten

Tungsten has a very wide range of appliactions in a variety of industries that make it a highly used element.

Tungsten is a hard, grey coloured metal, which is one of the heaviest elements. It has a melting point of 3,422 degrees Celsius – the highest of all the elements – and a boiling point of 5,555 degrees Celsius. The element is found naturally on Earth in only chemical compounds.

Tungsten is very brittle and difficult to work due to the weak grain boundaries present in its polycrystalline form. In order to make the element more pliable, single-crystalline tungsten can be used, making it easier to draw, forge and extrude the material.

The two crystallographic forms in which tungsten exists are α and β. The α form is body centered cubic and is the more stable of the two.  It is a low superconductor, showing exactly zero resistance to electrical currents, and the expulsion of magnetic fields once it reaches below its ‘critical temperature’. The β form of tungsten is a metastable structure, which exists in columnar grains, rather than the isometric grains of the α form.  This allows the element to be more pliable. The β phase exists in a crystallographic structure called A15 cubic.  

By mixing together the two different crystallographic forms of tungsten (α and β), it increases the superconducting transition temperature TC above that of the stable α form.  Alloying tungsten with other metals can also produce an increase in the superconducting transition temperature, making such alloys useful in superconducting circuits in low temperatures.

Tungsten has the ability to maintain its strength in high temperatures. It has inertness to oxygen, acids and alkalis, and has a very high density (19.3 grams per cubic centimeter). It has the lowest vapour pressure, the highest tensile strength and the lowest coefficient of expansion of any pure metal.

There are several uses for tungsten that take advantage of its key properties. The main application being its use in filaments; ranging from your regular household light bulb through to filaments in X-ray tubes and electron microscopes.  Tungsten is the ideal material choice for the filament because it has the highest melting, the lowest vapour pressure, the lowest coefficient of thermal expansion, the highest tensile strength of all the metals and an ability to maintain this strength at high temperatures.

Tungsten's high density and hardness also makes it useful in military applications such as rocket engine nozzles. Tungsten's high desnity also makes it a good choice for creating shields to gamma radiation,

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Product line
number
MaterialDimensionsPurityDescription
W2322Tungsten Foil 0.025 mm (thickness) Purity 99.95%Temper as rolled
W2323Tungsten Foil 0.050 mm (thickness) Purity 99.95%Temper as rolled
W2332Tungsten Foil 0.10 mm (thickness) Purity 99.95%Temper stress relieved. Finish Bright.
W2324Tungsten Foil 0.125 mm (thickness) Purity 99.95%Temper as rolled. Finish bright - not pickled
W2328Tungsten Ribbon 0.025 mm (thickness) Purity 99.95%Temper as rolled
W2330Tungsten Ribbon 0.025 mm (thickness) Purity 99.95%Temper as rolled
W2321Tungsten Ribbon 0.03 mm (thickness) Purity 99.95%Temper as rolled
W2325Tungsten Sheet 0.25 mm (thickness) Purity 99.95%Temper as rolled
W2326Tungsten Sheet 0.5 mm (thickness) Purity 99.95%Temper as rolled
W2327Tungsten Sheet 1.0 mm (thickness) Purity 99.95%Temper as rolled
W2333Tungsten Sheet 2.0 mm (thickness) Purity 99.97%Temper as rolled. Surface pickled, matt finish.
W2329Tungsten Sheet 3.0 mm (thickness) Purity 99.95%Temper as rolled. Surface Pickled. Matt Finish.
W5590Tungsten Wire 0.004 mm (diameter) Purity 99.95%Temper hard. Condition Clean
W5568Tungsten Wire 0.005 mm (diameter) Purity 99.95+%Temper hard. Condition clean.
W5608Tungsten Wire 0.0075 mm (diameter) Purity 99.95%Temper hard. Condition Clean.
W5609Tungsten Wire 0.0125 mm (diameter) Purity 99.95%Temper hard. Condition Clean.
W5569Tungsten Wire 0.010 mm (diameter) Purity 99.95+%Temper hard. Condition clean.
W5571Tungsten Wire 0.015 mm (diameter) Purity 99.95%Temper hard. Condition clean.
W5572Tungsten Wire 0.020 mm (diameter) Purity 99.95%Temper hard. Condition clean.
W5573Tungsten Wire 0.025 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5596Tungsten Wire 0.035 mm (diameter) Purity 99.95%Temper annealed. Condition Clean.
W5599Tungsten Wire 0.040 mm (diameter) Purity 99.95%Temper annealed. Condition Clean.
W5574Tungsten Wire 0.050 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5588Tungsten Wire 0.075 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5589Tungsten Wire 0.10 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5575Tungsten Wire 0.125 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5579Tungsten Wire 0.150 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5591Tungsten Wire 0.178 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5580Tungsten Wire 0.20 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5576Tungsten Wire 0.25 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5581Tungsten Wire 0.30 mm (diameter) Purity 99.95%Temper as drawn. Condition clean.
W5582Tungsten Wire 0.40 mm (diameter) Purity 99.95%Temper as drawn. Condition clean.
W5577Tungsten Wire 0.50 mm (diameter) Purity 99.95%Temper as drawn. Condition clean.
W5583Tungsten Wire 0.75 mm (diameter) Purity 99.95%Temper as drawn. Condition clean.
W5578Tungsten Wire 1.0 mm (diameter) Purity 99.95%Temper as drawn. Condition clean.
W5607Tungsten Wire - Straight Cut Lengths 0.025 mm (diameter) Purity 99.95%Temper annealed. Condition Clean
W5606Tungsten Wire - Straight Cut Lengths 0.050 mm (diameter) Purity 99.95%Temper annealed. Condition Clean
W5602Tungsten Wire - Straight Cut Lengths 0.075 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5603Tungsten Wire - Straight Cut Lengths 0.10 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5595Tungsten Wire - Straight Cut Lengths 0.125 mm (diameter) Purity 99.95%Temper annealed. Condition clean
W5604Tungsten Wire - Straight Cut Lengths 0.15 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5605Tungsten Wire - Straight Cut Lengths 0.178 mm (diameter) Purity 99.95%Temper annealed. Condition clean.
W5597Tungsten Wire - Straight Cut Lengths 0.20 mm (diameter) Purity 99.95%Temper annealed. Condition clean
W5598Tungsten Wire - Straight Cut Lengths 0.25 mm (diameter) Purity 99.95%Temper annealed. Condition clean
W5601Tungsten Wire - Straight Cut Lengths 0.50 mm (diameter) Purity 99.95%Temper as drawn. Condition clean.
W5592Tungsten Plated Wire 0.020 mm (diameter bare wire) Purity 99.95%Gold plated 99.99% 3-5% by weight Temper hard
W5622Tungsten Plated Wire 0.050 mm (diameter bare wire) Purity 99.95%Gold plated 99.99% - thickness 0.0005mm. Temper as drawn.
W5612Tungsten Plated Wire 0.10 mm (diameter bare wire) Purity 99.95%Gold plated 99.99% 1.6-2.4% by weight Temper hard
W5611Tungsten Insulated Wire 0.025 mm (diameter bare wire) Purity 99.85%Temper annealed. Condition FORMVAR insulated.
W5584Tungsten Insulated Wire 0.050 mm (diameter bare wire) Purity 99.98%Temper annealed. Quadruple PTFE Insulated. ~coating thickness 0.0125mm. Nominal o.d. of coated wire 0.075mm
W5585Tungsten Insulated Wire 0.075 mm (diameter bare wire) Purity 99.98%Temper annealed. Quadruple PTFE Insulated. ~coating thickness 0.018mm. Nominal o.d. of coated wire 0.112mm
W5617Tungsten Insulated Wire 0.10 mm (diameter bare wire) Purity 99.95%Temper annealed. Quadruple PTFE Insulated. ~coating thickness 0.025mm. Nominal o.d. of coated wire 0.15mm
W5586Tungsten Insulated Wire 0.125 mm (diameter bare wire) Purity 99.98%Temper annealed. Quadruple PTFE Insulated. ~coating thickness 0.025mm. Nominal o.d. of coated wire 0.175mm
W5587Tungsten Insulated Wire 0.2 mm (diameter bare wire) Purity 99.95%Temper annealed. Quadruple PTFE Insulated. ~coating thickness 0.037mm. Nominal o.d. of coated wire 0.275mm
W5620Tungsten Insulated Wire - Straight Cut Lengths 0.050 mm (diameter bare wire) Purity 99.95%Temper annealed. Quadruple PTFE Insulated. ~coating thickness 0.0125mm. Nominal o.d. of coated wire 0.075mm
W5570Tungsten WOVEN Mesh/Gauze 150 mesh per inch Purity 99.95%(3487 per sq cm) wire diameter 0.020mm plain weave Aperture size 0.15mm Open area 77.4%
W5593Tungsten WOVEN Mesh/Gauze 100 mesh per inch Purity 99.95%(1550 per sq cm) wire diameter 0.025mm plain weave Aperture size 0.23mm Open area 81%
W5594Tungsten WOVEN Mesh/Gauze 100 mesh per inch Purity 99.95%(1550 per sq cm) wire diameter 0.050mm plain weave Aperture size 0.20mm Open area 64%
W5600Tungsten WOVEN Mesh/Gauze 50 mesh per inch Purity 99.95%(387 per sq cm) wire diameter 0.025mm plain weave Aperture size 0.483mm Open area 90.3%
W5613Tungsten WOVEN Mesh/Gauze 50 mesh per inch Purity 99.95%(387 per sq cm) wire diameter 0.050mm plain weave Aperture size 0.457mm Open area 81.0%
W5614Tungsten WOVEN Mesh/Gauze 20 mesh per inch Purity 99.95%(62 per sq cm) wire diameter 0.125mm plain weave Aperture size 1.143mm Open area 81.0%
W5615Tungsten WOVEN Mesh/Gauze 20 mesh per inch Purity 99.95%(62 per sq cm) wire diameter 0.178mm plain weave Aperture size 1.092mm Open area 74.0%
W5610Tungsten Rod 2.0 mm (diameter) Purity 99.95%Centerless ground. Condition Clean
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