Tungsten Cables

Tungsten is a chemical element that comes in the category of transition metal. Its symbol is W and atomic number is 74. It is also called wolfram (prime ore of tungsten) so its symbol is W. Due to its strength and excellent properties at extremely high temperatures they are the natural choice for making bulb filaments.

Properties of Tungsten

• It is a very hard and heavy.
• Its color is grayish white.
• Among all the non alloyed metals, it has the highest melting point and second highest of all the elements after carbon.
• The melting point of ductile tungsten is very high. It is 3,410° C or 6,170 °F.
• It has low evaporation rate at high temperatures about 0.0001 Torr at 2,757°C / 4,995°F.
• Its tensile strength is greater than steel.

Applications of tungsten

• Tungsten in pure form is used generally in electrical applications.
• Its several alloys and compounds are widely used in many applications as in light bulb filaments, in X-ray tubes etc.
• Tungsten is the only metal from the third transition series that is known to occur in biomolecules.

Properties of tungsten cables

• Tungsten is the ideal material for making electrical filaments.
• Due to its ductility, strength, and workability it can readily be formed into the filament coils.
• As the melting point of tungsten is very high it can be heated to 3000°C or 5,432°F. At this temperature it glows white hot and provide excellent brightness.
• Tungsten cables are corrosion resistance so they perform well in harsh environments.
• They are hardly affected by the attack of mineral acids.

Tungsten Alloys
Different alloys of tungsten are made by adding different elements to it. There are generally five types of alloys which are mostly used in electrical purposes. Tungsten is the common and dominating constituent of all the alloys. Other important constituent is Nickel whose amounts vary from one alloy to another. The amount of tungsten vary from 90% to 97%. The amount of nickel vary from 2.1% to 6%.