chinatungsten.com - Chinatungsten - Manufacturer and Supplier of Tungsten, Tungsten Carbide, Tungsten Alloy

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Description: Professional tungsten manufacturer and tungsten supplier who offers tungsten, tungsten oxide, tungsten powder, tungsten alloy, tungsten carbide, tungsten copper and molybdenum.

tungsten (138) tungsten carbide (77) molybdenum (61) tungsten alloy (28) tungsten copper (11) tungsten powder (9) tungsten oxide (3)

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Tungsten /tʌŋstən/, also known as wolfram /wʊlfrəm/, which is a chemical element with the symbol of W and atomic number 74. Tungsten Metal is a hard, rare metal, it was found naturally on the Earth only in chemical compounds such as tungsten oxide. Now, the most of tungsten mines was found in China.

Tungsten was identified as a new element in 1781, and it was the first isolated as a metal in 1783.There are two important tungsten ores include wolframite and scheelite.Tungsten has the highest melting point of all the non-alloyed metals and the 2nd highest melting point of all the elements after carbon. Also tungsten metal has high density of 19.3 g/cc which is comparable to that of uranium and gold, and it is much higher about 2 times than that of lead.

Most of tungsten chemical compounds are Tungsten oxides and tungsten trioxides(WO3), tungsten oxides are always named tungsten intermediate products，they are tungstic acid, ammonium paratungstate (APT, tungsten oxide content 88.5% );ammonium metatungstate (AMT), sodium tungstate,yellow tungsten oxide (YTO),blue tungsten oxide (BTO), tungsten trioxide (WO3), violet tungsten oxide (VTO). The other tungsten chemical compounds are most often used industrially as tungsten catalysts, there are tungstic anhydride,

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