Tungsten Supply Shortfalls Threaten Global Semiconductor and Aerospace Sourcing
Tightening Chinese tungsten export quotas force semiconductor and aerospace buyers to secure alternative high-purity feedstocks.

Briefing
Japan’s Kanto Denka and Central Glass halted tungsten hexafluoride production after running out of Chinese feedstock. The shutdown interrupts output of the gas used in semiconductor chemical vapor deposition, forcing chip procurement teams to redesign contracts and find secondary suppliers. The bottleneck pushed global ammonium paratungstate prices to historic highs and threatens downstream logic and memory chip lines.
Together, the idle plants account for twenty-five percent of global tungsten hexafluoride capacity.

Context
Procurement desks spent the past year debating whether non-Chinese tungsten mines in South Korea and North America could scale up fast enough to offset Beijing’s tighter export licenses. Buyers had assumed regional processing hubs carried enough buffer stock of intermediate ammonium paratungstate to maintain supply through the transition.

Analysis
The crisis stems from Beijing’s decision to tighten export controls on raw tungsten products. Because China controls eighty percent of global extraction, restricting outbound shipments quickly starved overseas refiners of feedstock. The limits drove down domestic prices inside China as raw material accumulated, while foreign buyers faced severe shortages.
With global inventories at record lows, the shock moved fast from mines to chemical refineries, bringing gas production lines to a halt and driving up costs for industrial tooling and carbide end mills.

Parameters
- Shutdown Date ~ July 1, 2026, when major Japanese producers suspended tungsten hexafluoride operations due to a lack of feedstock.
- Capacity Affected ~ 25 percent, the portion of global tungsten hexafluoride production capacity taken offline by the shutdown.
- Ammonium Paratungstate Price ~ 2,900 dollars per metric tonne unit, a ninefold increase since early 2025 driven by export restrictions.
- Chinese Supply Concentration ~ 80 percent, the share of global tungsten production controlled by China, underlining the fragility of the current supply chain.

Outlook
Over the coming quarters, procurement teams should track operational progress at the Sangdong mine in South Korea, which expects to scale production by early 2027. Success there would help relieve the global feedstock deficit. Buyers should also follow monthly export filings from the Chinese Ministry of Commerce to see if Beijing adjusts or further tightens its permit allocations.

Verdict
Buyers must immediately secure multi-year supply contracts with ex-China tungsten mines and pre-order high-purity chemical derivatives to shield production schedules from ongoing export controls.
