Most of the tungsten metal powder is converted to tungsten carbide (WC) by reaction with pure carbon powder, e,g. carbon black, at 900- 2,200℃ in pusher or batch furnaces, a process called carburization.
Tungsten carbide is, quantitatively, the most important tungsten compound. Because of its hardness, it is the main constituent in cemented carbide (hardmetal).
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