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Kinds of Metal Tungsten

Details: Category: Tungsten Information; Published on Thursday, 12 September 2013 19:23; Hits: 1741

Tungsten is a brittle metal with a very high melting point. Out of all of the elements only carbon has a higher melting point, and tungsten's melting point is higher than 3300 degrees Celsius. Tungsten is also very hard and scratch-resistant, and metal tungsten rings are very popular. Many men wear them as their wedding rings because they don't scratch and always look new. There are a variety of types of metal tungsten.

Pure Metal Tungsten
Tungsten is element W on the periodic table. It has an atomic weight of 183.84 and its atomic number is 74. It has the highest melting point of any metallic element. In its pure form, it is light gray or white and very brittle. It can be cut with a simple saw or formed into various shapes. Because of this, and its high melting point, tungsten is used in the filaments of a variety of light emitting products such as light bulbs and televisions. Pure metal tungsten is generally obtained from wolframite and scheelite, a mineral. The process by which tungsten is extracted from wolframite was pioneered by two Spanish chemists and mineralogists in 1783.

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Expansion in Production

Details: Category: Tungsten Information; Published on Thursday, 12 September 2013 19:18; Hits: 1643

Tungsten carbide has become increasingly popular and in high demand throughout the decades, now presently producing up to almost 30,000 tons annually.

The Present Day
Isostatic pressure sintering, led to the development of tungsten which was even harder than before. Tungsten is used in tools, mining, weaponry and even jewelry.

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Tungsten carbide is what most tungsten rings are made of

Details: Category: Tungsten Information; Published on Thursday, 12 September 2013 19:14; Hits: 1898

Tungsten carbide is what most tungsten rings are made of. It is incredibly durable but rather difficult to make. Tungsten carbide is a mixture of tungsten and carbon atoms within a structure formed by another metal, generally either cobalt or nickel. To form the metal tungsten powder, which is then mixed with the cobalt or nickel, you mix the carbon, tungsten and metal oxides and then heat until a bond is formed between the elements. After you mix the powder with the cobalt and add wax you mill the powder and then mold into the desired shape.

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Cobalt, Tantalum and Titanium

Details: Category: Tungsten Information; Published on Thursday, 12 September 2013 19:16; Hits: 1924

When combined with cobalt, titanium or tantalum, the material was strengthened. This made it very popular for use in cutting, milling and mining drills.

World War II
During the second World War, tungsten carbide was needed by both sides for its weaponry production. Portugal was valuable due to its supplies of of wolframite ore, a source of tungsten.

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Tungsten-Steel Alloys

Details: Category: Tungsten Information; Published on Thursday, 12 September 2013 19:12; Hits: 1783

Tungsten-steel alloys are extremely hard and are made by combining tungsten and steel. They only require a small amount of tungsten compared to the amount of steel used. These alloys are used in many high speed applications such as rocket engine nozzles.

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