Archive for June 7, 2018
Tungsten is used in everyday life and can be found in everything from jewelry to heating elements, light bulb filaments and in heavy metal alloys.
Tungsten was discovered in 1781, more than 230 years ago, but wasn’t applied for use in alloys for about 150 years. Though tungsten is rare—there are only 1.25 grams of tungsten per 1,000 kilograms of the Earth’s crust—it is very valuable. It only appears naturally when combined in four major mineral forms with calcium, iron or manganese, but plays an important role in manufacturing.
Steel is an alloy made up of iron and carbon and when mixed with other metals, it takes on different properties. Tungsten adds strength to steel. Tungsten is a basic chemical element and withstands heat better than any other metal. It is also twice as dense as steel. Tungsten carbine falls between 8.5 and 9 on Moh’s hardness scale, behind diamonds which have a hardness of 10. In