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Metals
TUNGSTEN |
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The cement carbide is the most important use for tungsten: its main constituent is tungsten carbide (WC). It has the strength of cast iron and form excellent for cutting tools for machining steel. The annual world production is about 38.000 ton.
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Tungsten is a lustrous and silvery white. The metal resists attack by oxygen, acids and alkalis and has the highest melting point of all metals. The tungsten filaments used in incandescent light bulbs and electrical contacts and electrodes for arc. It is used in alloys such as steel, which imparts great strength.
