Japan’s Semiconductor Gas Shuts Down, China Holds the Keys

Japan’s semiconductor gas production has collapsed to zero after China halted exports of high-purity tungsten powder, cutting off supplies of tungsten hexafluoride — a critical material for advanced chipmaking. This leaves TSMC, SK Hynix, and Samsung highly exposed, with Japanese suppliers Kanto Denka and Central Glass announcing permanent shutdowns from July 1, 2026.

Tungsten-based gases in the semiconductor industry are special chemical gases made from tungsten that help build the tiny wiring inside advanced computer chips. For a common man, think of them as the “glue” or “filler” that connects microscopic parts of a chip together so your phone, laptop, or AI server can run faster and more reliably.

In short, tungsten-based gases are invisible but vital building blocks of modern electronics. Without them, chips can’t be made at the cutting-edge scale we rely on today.

What Happened

• China’s Export Ban: Beijing tightened export rules on high-purity tungsten powder, halting shipments to Japan.
• Immediate Impact: Japanese producers Kanto Denka and Central Glass cannot source raw tungsten, forcing them to cease tungsten hexafluoride production.
• Production Collapse: Japan’s output of this gas has dropped to zero.

Why Tungsten Hexafluoride Matters

• Essential Role: Used to fill nano-scale vias in advanced chips (7nm and below).
• Applications: 3D NAND, HBM, and advanced logic chips requiring precise interconnects.
• Cost Structure: 60–70% of production cost comes from tungsten powder.

Global Impact

• TSMC, Samsung, SK Hynix: All rely on Japanese suppliers for tungsten hexafluoride.
• Supply Chain Shock: With Japan out, China becomes the only large-scale producer, gaining pricing power.
• Price Surge: Chinese manufacturers’ stock prices are already rising, signaling higher costs for offshore buyers.
• Alternative Materials: Samsung has begun using molybdenum in SSD NAND; SK Hynix plans to adopt molybdenum for its 375-layer NAND.

Strategic & Economic Risks

Factor	Impact
Japan’s collapse	No domestic tungsten hexafluoride production
China’s leverage	Sole supplier, controls pricing
Memory makers	NAND & HBM supply chains disrupted
Chip costs	Rising due to scarcity
Alternatives	Molybdenum adoption underway but not yet scalable

Risks & Challenges

• Supply Chain Fragility: Overdependence on China for critical raw materials.
• Cost Inflation: Higher semiconductor prices could ripple into smartphones, AI servers, and consumer electronics.
• Transition Risks: Switching to molybdenum may cause delays in production ramp-up.
• Geopolitical Exposure: Japan’s semiconductor ecosystem weakened, while China consolidates control.

What’s Next

• Short-term shortages: Expected in NAND and HBM memory.
• China’s dominance: Will likely push global buyers to diversify supply chains.
• Material innovation: Molybdenum and cobalt adoption may accelerate to reduce reliance on tungsten.

India's Position

India is not directly hit by Japan’s collapse since it wasn’t a tungsten gas producer. However, as India builds fabs and packaging units, import costs will rise, making local material innovation critical. ISM 2.0’s emphasis on domestic material production could help India reduce dependence on China in the medium term.

India is positioning itself as a semiconductor hub but remains vulnerable in the tungsten supply chain. While Japan’s collapse in tungsten hexafluoride production exposes global chipmakers, India is not yet a producer of this critical gas. Instead, India is focusing on building fabs, packaging units, and alternative material ecosystems under the ₹76,000 crore India Semiconductor Mission.