mineral · input
Tungsten Metal
Feedstock for WF6 (tungsten hexafluoride) production — the precursor gas for semiconductor CVD tungsten contact plug deposition. China controls ~80% of global tungsten mine supply and imposed export restrictions in late 2024. No viable substitute for tungsten CVD in advanced semiconductor nodes below 7nm.
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Source countries
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Companies
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Goods affected
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Claims on record
What depends on it
Goods that need this input
1 essential American goods rely on tungsten metal somewhere upstream in their supply chain.