No Gas, No Chips: Mapping the Choke Points Behind Chip Manufacturing

American Enterprise Institute | Chris Miller, Carl Jackson

China controls 51 percent of global tungsten hexafluoride capacity and up to 75 percent of fluorinated gas production, creating acute supply vulnerabilities for the $1 trillion semiconductor industry. A disruption in specialty chemical supplies can halt leading-edge chip fabrication plants across Western nations. Specialty gases represent a $5 billion market.

Upstream mineral dependencies deepen this concentration, as China mines 60 percent of global fluorspar and controls key tungsten and germanium refining. Despite the US CHIPS Act allocating $38.2 billion to fabrication incentives, funding for materials and chemical supply chains remains severely constrained. Meanwhile, Beijing has expanded state-directed financing like the National Integrated Circuit Industry Investment Fund to integrate raw chemical production into its broader manufacturing strategy. Japanese suppliers faced severe cost spikes when Chinese processed tungsten shipments stopped in early 2026. Mitigating these choke points requires allied policies to diversify mineral sourcing, improve supply visibility, and shorten Beijing's coercive economic leverage.

Comment

The concentration of semiconductor gas qualification protocols at Western fabs creates an operational inertia that amplifies supply chain friction. Unlike bulk silicon, switching suppliers for specialty gases like tungsten hexafluoride requires tool-level recalibration that can absorb up to twelve months of plant capacity. This qualification bottleneck means that even minor disruptions in raw fluorspar shipments from Chinese mines immediately cascade into prolonged fabrication delays. Consequently, semiconductor fabrication lines operated by Intel face immediate production halts when high-purity inputs undergo unannounced export friction.

This vulnerability stems from the precise chemical purity tolerances required by ASML Twinscan EUV lithography systems. Minute contamination in fluorinated compounds degrades optical lenses, preventing fabs from utilising lower-grade alternative feedstocks without severe yield loss. Even if raw minerals are mined outside East Asia, the absence of Western refining infrastructure for hydrogen fluoride ensures that raw materials must still pass through Asian processing nodes. The resulting structural dependency leaves microprocessors for defense platforms like the F-35 Lightning II bound to fragile single-source chemical pipelines.

Strategic Question for Discussion

If alternative hydrogen fluoride refining capacity is established outside East Asia, which factor will pose the greater barrier to securing microprocessors for platforms like the F-35 Lightning II: the multi-month tool-qualification timelines at advanced fabs, or upstream access to high-purity fluorspar deposits?

The available evidence points toward tool-qualification timelines as the primary operational bottleneck. While alternative fluorspar reserves can be developed over multi-year horizons, re-qualifying high-purity specialty gases on ASML lithography systems requires months of halted or degraded fab output that commercial chipmakers are reluctant to absorb. Consequently, short-term supply resilience remains constrained by fab-level operational mechanics rather than raw mineral extraction.

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