BEIJING — China dominates the supply chain for many of the world’s critical minerals, but so far it’s held off on sweeping restrictions on at least one: tungsten.
The metal is nearly as hard as diamond and has a high energy density. That’s made tungsten an important material in weapons, autos, electric car batteries, semiconductors and industrial cutting machines. Chipmakers such as Taiwan Semiconductor Manufacturing Company and Nvidia both use the metal. “I don’t expect any saber-rattling over tungsten,” said Lewis Black, CEO of Canada-based Almonty Industries, which is spending at least $75 million to reopen a tungsten mine in South Korea later this year.