The Probert Encyclopaedia of Science & Technology

TUNGSTEN

Tungsten (previously also known as wolfram and scheelium) is a grey-white, heavy, high-melting, ductile, hard, polyvalent metallic element that resembles chromium and molybdenum in most of it's properties and is used especially for electrical purposes and in hardening steel. It has the symbol W. Tungsten was first obtained in tungstic acid by Scheele in 1781 and extracted from tungstic acid in 1786 by the De Luyart brothers, and in 1859 was first employed commercially in the making of a new kind of steel.
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