The Data Center Supply Chain You Weren’t Watching
Two exposures, two different clocks.
The Iran war has been covered almost entirely as an energy story. Oil above $100 a barrel. European LNG up more than 60%. Gas-fired power costs rising across Asia. That framing captures the most visible impact and misses the more structurally interesting one for the companies building AI infrastructure.
The Strait of Hormuz does not just move fuel. It underwrites the upstream conditions that make data center construction and semiconductor manufacturing possible, and it does so through supply chains that are almost entirely absent from the investor conversation.
Two exposures deserve separate treatment. The first is a cost channel: materials prices rising across the full bill of construction. The second is a constraint channel: a single input, with no substitute, produced in one place, that could slow the AI buildout regardless of what happens to energy prices. The market is not distinguishing between them.
What the U.S. is and is not feeling
The United States is a net LNG exporter. Domestic electricity prices are linked to Henry Hub gas prices, which have remained relatively sheltered from the Iran war disruption. American data center operators are not opening materially higher utility bills because of the conflict, at least not directly and not yet. That insulation is real but not permanent: as U.S. LNG exports approach 25% of domestic production, the domestic market is becoming incrementally more exposed to global price shocks over time.
The more immediate cost shock lands on the Asian manufacturing complex that produces the chips, drives, cooling equipment, and rack infrastructure American hyperscalers depend on. Japan, South Korea, and Taiwan are among the most LNG-dependent major economies in the world. Roughly 20% of global seaborne LNG moves through the Strait of Hormuz. When it gets disrupted, Asian energy costs rise, manufacturing costs rise, and export prices rise. Amazon, Google, Microsoft, and Meta absorb that in hardware procurement, not in their power bills.
The cost channel
For most of the commodities below, Hormuz creates price inflation rather than physical constraint. It is worth distinguishing this from tariff-driven inflation that was already in place before February 28: the two pressures compound, but they are separate.
Aluminum is the most direct Hormuz exposure. Gulf states, principally the UAE and Bahrain, produce about 8-9% of global primary aluminum using gas-fired smelting. That energy dependence means a sustained Gulf disruption raises their production costs and ultimately their export prices. Aluminum runs throughout data center construction: server chassis, heat sinks, cooling coils, rack components, building envelopes. The producer price index for aluminum mill shapes was already up 30-33% year-over-year through January 2026 from tariffs alone. Hormuz adds a second, independent layer of pressure on top of that.
Steel and copper carry a similar dynamic through the energy cost channel, though neither flows physically through the Strait in meaningful volume. Steel mill products PPI was up 20.7% year-over-year through January 2026 from tariffs; copper was up 15.7%. Both are energy-intensive to produce, and global energy price increases raise their cost of production at the margin. Copper dominates the electrical scope of hyperscale construction, which accounts for 40-50% of total project cost. Petrochemicals add a further diffuse layer: epoxy resins for circuit boards, plastics for server housings, dielectric fluids for immersion cooling, refrigerants for HVAC.
The construction consultancy Linesight has explicitly named aluminum, steel, copper, and cement as all Hormuz-exposed through this energy cost channel. ConstructConnect’s chief economist noted in January 2026 that approximately 70% of a typical data center project’s costs were already rising faster than bid prices before the Iran war began.
This channel raises the hurdle rate for marginal projects and compresses returns for colocation operators and investors who underwrote facilities at 2024 materials costs. It does not stop Amazon, Google, Microsoft, or Meta from building. Their combined data center capex in 2026 is approximately $600-700 billion, and they are building from strategic necessity.
The constraint channel
Helium is a different kind of story entirely.
Helium accounts for less than 1% of wafer manufacturing cost. That number is almost irrelevant to the argument. The relevant number is zero: zero viable substitutes exist for the applications where helium is still used. Phil Kornbluth, president of Kornbluth Helium Consulting, put it plainly: “Helium is expensive relative to other gases, so where there are substitutes, helium is no longer used.” If it is still being used, there is no substitute. Helium is irreplaceable in wafer backside cooling during etching, in EUV lithography purging, in vacuum chamber leak detection, and as a carrier gas in plasma deposition.
Understanding why Qatar matters requires understanding how helium is produced. It is not mined. It is extracted as a byproduct of natural gas processing through cryogenic distillation, meaning it comes out of the same industrial trains that produce LNG. Qatar’s Ras Laffan Industrial City, the world’s largest LNG export facility, produces helium as an associated product. When Iranian drone strikes hit Ras Laffan on March 2, LNG production stopped and helium production stopped with it automatically. The two products are inseparable at the facility level. Even if the Strait of Hormuz reopens tomorrow, the production facility damage takes three to five years to repair. About 33% of global helium supply is offline on a multi-year basis.
Can the United States offset the loss? The U.S. produces roughly 81 million cubic meters annually from fields in Texas, Wyoming, Kansas, and Oklahoma, the largest single national producer. Six new U.S. operations came online in 2025. But Cliff Cain, president of Pulsar Helium, told NewsNation directly: “We don’t have ramp-up capacity.” New greenfield helium plants require $200-500 million in capital and three to five years from approval to production. Kornbluth estimated that all alternative sources combined can replace only around half of the lost Qatari supply.
The AI-specific exposure is direct. TSMC manufactures all of Nvidia’s data center GPUs, the H100s and B200s that Amazon, Google, Microsoft, and Meta are acquiring at scale. SK Hynix produces approximately 60% of global high-bandwidth memory, the HBM stacked inside every AI accelerator; Nvidia cannot currently source it elsewhere. South Korean chipmakers sourced 55% of their helium from Gulf Cooperation Council nations in 2025; Taiwan’s dependence was 69%, per Barclays analysts. As chip nodes shrink to 3nm and 2nm, helium consumption per wafer increases because more EUV lithography passes are required per chip. The constraint sits at exactly the facilities making exactly the chips the AI buildout requires.
Korean and Taiwanese chipmakers reportedly hold about six months of strategic reserves at the supply chain level, but fab-level working inventory is approximately one week because liquid helium cannot be safely stockpiled. It leaks 0.1 to 1% per month even through good seals. About 200 specialized cryogenic ISO containers used to transport liquid helium are currently stuck in Qatar. The strategic clock started March 2.
The downstream numbers are already in the market. Western Digital CEO Irving Tan confirmed during the Q2 2026 earnings call that WD has sold out of hard drives for 2026, with long-term agreements through 2028. High-capacity enterprise drives are helium-filled; 89% of WD’s HDD revenue comes from cloud customers. WD’s average HDD prices are up 46% since September 2025. Seagate has implemented its own increases. DRAM and HBM chip prices surged 80-90% in Q1 2026 versus the prior quarter, per Counterpoint Research. Some server-grade memory modules have seen spot price increases exceeding 400%. Intel’s comment on its February earnings call: “There’s no relief as far as I know. There’s no relief until 2028.”
The distinction that matters
The Strait of Hormuz functions, for data centers, less as a direct commodity chokepoint and more as an energy system that underwrites the manufacturing cost of nearly everything a data center requires. Steel, copper, and aluminum rise in cost because their production is energy-intensive and global energy markets are connected. That cost channel is real, cumulative, and landing on a construction industry already under pressure from tariffs.
Helium is the exception. The one case where the physical constraint is direct, the co-production with LNG is structural, and the substitute does not exist. Less than 1% of the cost. Potentially the entire constraint.
The investors pricing this correctly are the ones who understand that distinction.