Tungsten (or wolfram as it used to be called) is a brittle dark grey metal with the chemical symbol W and atomic number 74. It is rare, found only in a few places on Earth. It usually occurs naturally as the minerals wolframite and scheelite.
It is strong and has a high melting point, with a density similar to gold. It is used to make tungsten carbide, which is used to coat metals in cutting tools. It is used in arc welding and is also used in electronics for all sorts of applications like incandescent light bulb filaments, cathode ray tubes and other high temperature uses.



