#AIBoomDrivesTungstenShortage

Global semiconductor supply chains are facing a severe shock: two Japanese producers (Kanto Denka and Central Glass) have halted tungsten hexafluoride (WF₆) output, removing ~25% of global capacity. Prices are projected to surge 70–90% in H2 2026, driven by AI chip demand and China’s dominance in tungsten mining and processing.

Key Facts

WF₆ Role: Essential precursor gas for depositing tungsten in advanced chips (below 7nm, 3D NAND, HBM).

Japanese Halt: Kanto Denka & Central Glass stopped production July 1, 2026, cutting ~2,200 tons annually.

Global Market Size: ~8,000–9,000 tons/year; Japan’s exit creates a 2,000-ton deficit.

Raw Material Issue: Shortage of high-purity tungsten powder (prices up 325% YoY).

China’s Control: ~80% of global tungsten mining/processing; export controls since 2025 worsened supply.

Price Outlook: WF₆ prices expected to jump 70–90% in H2 2026.

Impact on AI & Semiconductors

Area Effect of WF₆ Shortage

AI Accelerators Bottleneck in advanced nodes (7nm and below) crucial for GPUs/AI chips.

Memory (3D NAND, HBM) WF₆ indispensable for >200-layer NAND and high-bandwidth memory.

TSMC Revenue Advanced nodes (WF₆-dependent) = ~75% of wafer revenue (~$40.2B in Q2 2026).

Fab Expansion Capex blocked by precursor shortages; throughput constrained.

Alternatives Molybdenum explored for NAND, but WF₆ tungsten remains irreplaceable for leading-edge logic.

Risks & Challenges

Supply Concentration: Heavy reliance on China for tungsten powder leaves fabs vulnerable.

No Mature Substitutes: WF₆’s conductivity and ability to fill nano-scale gaps unmatched.

Geopolitical Exposure: Export controls and raw material nationalism amplify volatility.

Delayed Relief: China’s CSSC Specialty Gas plans +1,000 tpa expansion, but not until 2027.

Strategic Takeaways

Chipmakers (TSMC, Samsung, SK Hynix): Must ration WF₆ inventories through late 2026.

Investors: Expect margin pressure in semiconductor firms reliant on advanced nodes.

Policy Makers: Japan’s >90% reliance on imported tungsten highlights urgent need for diversification.

AI Sector: Shortage could slow rollout of next-gen AI accelerators and memory products.

WF₆ Shortage Outcomes (H2 2026–2027)

Stabilization

China ramps up exports or new supply chains emerge.

WF₆ prices ease to +30–40% above 2025 levels.

AI chip production stabilizes; NAND/HBM expansion resumes.

Policy easing, successful diversification, recycling breakthroughs.

Continued Shortage

Japan’s halt persists, China maintains export controls, limited alternatives.

WF₆ prices remain +70–90% higher through 2026.

Fab throughput constrained; delays in AI accelerators & memory launches. Ongoing raw material bottlenecks, geopolitical inertia.

Geopolitical Escalation

Trade tensions worsen; China tightens tungsten exports further.

WF₆ prices spike >100%, extreme volatility.

Severe disruption in advanced nodes; rationing of AI chips.

Sanctions, export bans, geopolitical flashpoints.