Tungsten's atomic number on the Periodic Table is 74; its atomic symbol is W. The element is highly resistant to bases and acids. Tungsten's melting point of 3,422 degrees Celsius is the highest of any metal. Hard by itself, tungsten becomes even more durable when combined with carbon, as well as nearly scratch resistant.
Tungsten carbide is used to make cutting tools for metalworking, drilling construction and mining. Its strength makes it a popular material for jewelry, such as rings, bracelets and necklaces. Weapons makers use tungsten carbide to produce armor-piercing ammunition.
Tungsten carbide is a much more versatile material than most other metals. It is four times as hard as titanium and twice as hard as steel. Tungsten carbide is much more heat resistant than both metals as well.
Tungsten was discovered in 1758 and first separated from wolframite in 1793. In the 20th century, tungsten carbide became best known as the material for light bulb filaments. Tungsten carbide was widely used in World War II for making weapons.
Leading producers of tungsten carbide include China and Russia. Canada, Bolivia and the United States have large reserves. Some 30,000 tons of tungsten carbine are produced annually.