Tungsten is not traded as a futures contract and cannot be tracked on London Metal Exchange due to it’s high price. We supply only high purity Tungsten (99.98% +)

Product info:

Content: 99.98%
size: 12mm*12mm*320mm 0.95KG
size: 12mm*12mm*360mm 0.98KG
size: 12mm*12mm*490mm 1.06KG
Density: > 18.2
Country of Origin: Russia

Content: 99.98%
size: 14mm*14mm*350mm 1KG
Density >17.88
Country of Origin: China

Content: 99.99%
size: 12mm*12mm*500mm 1.3KG
size: 13mm*13mm*500mm 1.6KG
Density: >17.88
Country of Origin: China

 

tungsten-2

An introduction to Tungsten

Discovery of Tungsten

In 1779 Peter Woulfe deduced the existence of a new element – Tungsten – from his analysis of the mineral wolframite (an iron manganese tungstate mineral).

Tungsten was isolated as tungstic oxide (WO3) in 1781 by Carl W. Scheele from the mineral scheelite (calcium tungstate). However he did not have a suitable furnace to reduce the oxide to the metal.

Tungsten was finally isolated by Fausto and Juan Jose de Elhuyar in 1783 by reduction acidified wolframite with charcoal.

The element name comes from the Swedish words ‘tung sten’, meaning heavy stone.

The chemical symbol, W, comes from the original name of the element, Wolfram.

Harmful effects:

Tungsten is considered to be of low toxicity.

Characteristics:
Tungsten is a very hard, dense, silvery-white, lustrous metal that tarnishes in air, forming a protective oxide coating. In powder form tungsten is gray in color.

The metal has the highest melting point of all metals, and at temperatures over 1650 oC also has the highest tensile strength. Pure tungsten is ductile, and tungsten wires, even of a very small diameter, have a very high tensile strength.

Tungsten is highly resistant to corrosion. It forms tungstic acid (H2WO4), or wolframic acid from the hydrated oxide (WO3) and its salts are called tungstates, or wolframates.

Tungsten is one of the five major refractory metals (metals with very high resistance to heat and wear). The other refactory metals are molybdenumtantalumrhenium andniobium.

Uses:
Tungsten and its alloys are widely used for filaments in older style (not energy saving) electric bulbs and electronic tubes. It is used for making heavy metal alloys because of its hardness. Tungsten is used for high-temperature applications such as welding.

High speed steel (which can cut material at higher speeds than carbon steel), contains up to 18% tungsten.

Tungsten carbide (WC or W2C) is extremely hard and is used to make drills. It is also used for jewelry because of its hardness and wear resistance.