Tungsten Needle Property

Tungsten needle is one of the main products which made of tungsten material. So, it has some physical and chemical properties of tungsten, which has been the unique properties of tungsten needle, differing from needles made of other metal materials.

Of all metals in pure form, tungsten owns the highest melting point that is 3,422 °C, lowest vapor pressure which is above 1,650 °C and the highest tensile strength. What is more, tungsten possesses the lowest coefficient of thermal expansion in pure metals. The low thermal expansion and high melting point and strength of tungsten originate from strong covalent bonds formed between tungsten atoms by the 5d electrons. It will increase its toughness greatly if it alloying small quantities of tungsten with steel. Therefore, the tungsten needle, as pure tungsten material, owns the same physical properties of tungsten.

As to the chemical property of tungsten needle, which can also be analyzed from the material of tungsten, that is corrosion resistance, abrasion resistance, oxidization resistance, and high temperature resistance. That has been the reason for tungsten needle can be stored with unchangeable quality for long.

 

Tungsten Metals Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten.com.cn
 Tel.: 86 592 5129696; Fax: 86 592 5129797
 Email: sales@chinatungsten.com
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 Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

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