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W
Tungsten


Atomic no.:
74
Atom. weight: 183.84
Density: 19.25
Class:
refractory metal
Melting point: 3410°C
Boiling point: 5657°C
Colour: Array
   
Discoverer: Carl Wilhelm Scheele
Place: Koping, Sweden
Year: 1781

Tungsten was isolated in 1783 by J.J. and F. Ehuijar in Vergara, Sweden. Tungsten metal is lustrous and silvery white in color, and does not occur naturally (it has an abundance of 1 ppm in the earth's crust). It is found in the ore Wolframite, a tungstate of iron and manganese, (FeMn)WO4, which is converted to the trioxide and then reduced to the metal by reduction in hydrogen (carbon cannot be used as the very stable carbide would result). Tungsten metal is relatively inert, resisting attack by oxygen, acids and alkalis, although it will react with fused, oxidising alkali media. It has the highest melting point of all metals and, when pure, it can be worked with relative ease; however, the presence of impurities renders tungsten extremely brittle and, therefore, difficult to fabricate. The high melting point of tungsten makes it suitable for use as electric filaments (e.g. in electric light bulbs). It is also the basis of a range of alloys containing tungsten, copper and nickel which are used for radiation shielding as they provide a 50% increase in density compared to lead. Tungsten and its alloys also find uses in military applications (e.g. armour and shells), as well as counter-balance materials. Tungsten carbide powder (with possible additions of titanium and tantalum carbides) along with nickel or cobalt powders, are compressed and sintered to produce cemented carbides. These products are used in place of high speed steel to form the tip of cutting and drilling tools, or for parts which will be subjected to heavy useage.

Source: Goodfellow.com

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smart-elements - Acrylic Element cube - Tungsten W - 50mm

Acrylic Element cube - Tungsten W - 50mm

Amount: 1 St.
Purity :99.95%


1 pcs.: SOLD!

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smart-elements - Acrylic Element cube - Tungsten W - 50mm

Acrylic Element cube - Tungsten W - 50mm

Amount: 1 St.
Purity :99.95%


1 pcs.: SOLD!

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smart-elements - Acrylic Element cube - Tungsten W - 50mm

Acrylic Element cube - Tungsten W - 50mm

Amount: 1 St.
Purity :99.95%


1 pcs.: SOLD!

Details   

smart-elements - Acrylic Element cube - Tungsten W - 50mm

Acrylic Element cube - Tungsten W - 50mm

Amount: 1 St.
Purity :99.95%


1 pcs.: SOLD!

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smart-elements - Sintered & ground tungsten rod  99.95% - ~75.3g - 10 x 50mm

Sintered & ground tungsten rod 99.95% - ~75.3g - 10 x 50mm

Amount: 75.3g
Purity :99,95%


1 pcs.: SOLD!

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smart-elements - 5 pcs. Tungsten rods  99,95% -  10 x 10mm - ~ 75 grams

5 pcs. Tungsten rods 99,95% - 10 x 10mm - ~ 75 grams

Amount: ~ 75 g
Purity :99,95%


1 pcs.: SOLD!

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smart-elements - Tungsten electrode 99.95% - 289 grams- ~ 25 x 50mm

Tungsten electrode 99.95% - 289 grams- ~ 25 x 50mm

Amount: 1 Stck
Purity :99.95%


1 pcs.: SOLD!

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smart-elements - Tungsten electrode 99.95% - 567 grams- ~ 30 x 50mm

Tungsten electrode 99.95% - 567 grams- ~ 30 x 50mm

Amount: 1 Stck
Purity :99.95%


1 pcs.: SOLD!

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smart-elements - Tungsten metal small polished discs 5g - 99.95% purity

Tungsten metal small polished discs 5g - 99.95% purity

Amount: ca. 5g
Purity :99,95%


1 pcs.: 8.00 - tax free
5-9 pcs.: 8.00
>9 pcs.: 7.00

in stock

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smart-elements - Zone refined tungsten crystal rod - 99.995% purity, 460grams

Zone refined tungsten crystal rod - 99.995% purity, 460grams

Amount: 460g
Purity :~99,995%


1 pcs.: SOLD!

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smart-elements - Fine Tungsten Powder, 25 grams , purity 99,99%

Fine Tungsten Powder, 25 grams , purity 99,99%

Amount: 25g
Purity :99,99%


1 pcs.: 20.00 - tax free
5-9 pcs.: 19.00
>9 pcs.: 18.00

in stock

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smart-elements - high purity tungsten pearl - 1.46g 99.95% purity

high purity tungsten pearl - 1.46g 99.95% purity

Amount: 1.46g
Purity :99.95%


1 pcs.: SOLD!

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smart-elements - high purity tungsten pearl - 2.06g 99.95% purity

high purity tungsten pearl - 2.06g 99.95% purity

Amount: 2.06g
Purity :99.95%


1 pcs.: SOLD!

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smart-elements - Tungsten Xray target - 140 - 147 grams

Tungsten Xray target - 140 - 147 grams

Amount: 140-147g
Purity :~ 99,95%


1 pcs.: SOLD!

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smart-elements - Sintered & ground tungsten rod  99,95% - ~30g -  10 x 20mm

Sintered & ground tungsten rod 99,95% - ~30g - 10 x 20mm

Amount: ca. 29 - 30g
Purity :99,95%


1 pcs.: SOLD!

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