The smelters are caught in a vise—unable to export what they make, unable to import what they need.
When a narrow waterway closes, the world discovers how many things it makes from the same metal. The Strait of Hormuz, long understood as an artery for energy, has revealed itself equally as a lifeline for industry: the Gulf region supplies more than eight percent of global aluminium, and with that passage now blocked by conflict, smelters cannot ship what they produce nor receive what they need to produce it. Prices have surged to four-year highs, force majeure notices are being issued, and factories from Frankfurt to Mumbai are beginning to feel the weight of a supply chain that was already fraying before the first ship changed course.
- Aluminium prices have climbed to $3,544 per metric ton — their highest in four years — as the Strait of Hormuz closure severs both the export routes and raw material imports of Gulf smelters that supply 8% of global output.
- The disruption is a double vise: finished aluminium cannot leave the Gulf while bauxite and alumina shipments are being rerouted to Asia, with at least three bulk carriers carrying 371,000 metric tons already diverting away from the region.
- Qatalum, Qatar's 648,000-ton-capacity smelter, has begun shutting down after its gas supplier suspended deliveries, with Norsk Hydro issuing force majeure notices and warning that a full restart could take six to twelve months.
- Western markets are acutely exposed — Europe sources 30% of its aluminium imports from the Gulf and has few alternatives, with Russian supplies sanctioned, domestic smelters shuttered, and the Mozambique-based Mozal facility also going offline.
- Analysts at ING warn prices could briefly breach $4,000 per ton if the conflict persists, approaching the record highs of the 2022 energy crisis, as LME inventories continue to fall and the market deepens into backwardation.
Aluminium prices climbed to their highest level in four years this week, briefly touching $3,544 per metric ton on the London Metal Exchange — a surge driven not by oil markets but by the effective closure of the Strait of Hormuz. The Gulf region produces more than eight percent of the world's aluminium, and nearly all of it travels through that strait to customers in Europe and the United States. Now that passage is blocked, and the consequences are spreading through factories and construction sites across the Western world.
The disruption is particularly severe because it operates on two fronts at once. Gulf smelters in Bahrain, Qatar, Saudi Arabia, and the UAE cannot export finished aluminium, and simultaneously cannot import the bauxite and alumina they need to keep operating. Vessel-tracking data tells the story plainly: three bulk carriers carrying roughly 371,000 metric tons of bauxite have already changed course away from the Gulf, and at least one Australian bauxite vessel originally bound for the region is now heading to China instead.
The first major casualty was Qatalum, a Qatari smelter with annual capacity of 648,000 metric tons, which began an orderly shutdown after its gas supplier suspended deliveries amid regional instability. Co-owner Norsk Hydro issued a force majeure notice to customers and warned that a full restart could take six to twelve months. Aluminium Bahrain has made similar declarations, citing logistics disruptions that make exports impossible.
This crisis has arrived at an already strained moment. China's smelting capacity is effectively capped. Russian aluminium has been progressively removed from Western trade following Ukraine-related sanctions. LME inventories fell by more than 330,000 tons across 2025 and have continued declining. South32's Mozal smelter in Mozambique — a key long-term supplier to Europe — is also being placed on care and maintenance after failing to secure a new electricity contract. The market has moved into backwardation, with the cash premium over three-month contracts reaching $47.4 per ton last week, the highest since early 2022.
Analysts warn the rally could accelerate sharply. ING has cautioned that in a severe scenario, prices could briefly exceed $4,000 per ton, approaching the records set during the 2022 energy crisis. Europe, which has shuttered many of its own energy-intensive smelters and now relies on the Gulf for roughly thirty percent of its aluminium imports, is particularly exposed. The United States faces similar constraints, importing more than twenty percent of its aluminium from the region.
India's position is more insulated but not immune. As a major domestic producer with integrated smelters and its own bauxite reserves, India does not depend on Gulf imports for its overall aluminium supply. However, it does import specific grades and alloys — Gulf producers supply roughly half of India's unwrought aluminium alloy imports, which totalled around $590 million in 2023. A sustained rise in global prices would push up input costs across automobiles, power cables, railways, and packaging, even where physical supply remains available. At the same time, Indian producers such as Hindalco and Vedanta may find stronger export opportunities as Gulf shipments remain constrained — a rare advantage in an otherwise turbulent market.
Aluminium prices climbed to their highest level in four years this week, briefly touching $3,544 per metric ton on the London Metal Exchange before settling around $3,394—a surge that has little to do with oil or gas, the usual culprits in Middle Eastern crises. Instead, the metal's ascent traces directly to the effective closure of the Strait of Hormuz, the narrow waterway through which flows not just energy but also one of the world's most critical industrial supply chains. The Gulf region produces more than eight percent of the planet's aluminium, and nearly all of it travels through that strait to customers in Europe and the United States. Now that passage is blocked, and the consequences are rippling through factories and construction sites across the Western world.
The disruption operates on two fronts simultaneously, which is what makes it so severe. Gulf smelters—massive industrial facilities in Bahrain, Qatar, Saudi Arabia, and the United Arab Emirates that together ship over five million metric tons of finished aluminium annually—cannot get their product out. At the same time, they cannot get the raw materials in. Bauxite ore and alumina, the precursors to aluminium, arrive by ship from Australia and other distant suppliers. Vessel-tracking data shows the scale of the diversion: three bulk carriers carrying roughly 371,000 metric tons of bauxite have already changed course away from the Gulf. Ships carrying alumina destined for Bahrain are rerouting. One Australian bauxite vessel originally headed for the region is now bound for China instead. The smelters are caught in a vise—unable to export what they make, unable to import what they need.
The first major casualty appeared on Tuesday when Qatalum, a Qatari smelter with an annual capacity of 648,000 metric tons, began an orderly shutdown. The facility's gas supplier, responding to regional instability including Iranian drone attacks, announced it would suspend deliveries. Norsk Hydro, which holds half the joint venture, issued a force majeure notice to customers—a legal declaration that the company cannot meet its obligations due to circumstances beyond its control. The shutdown is expected to be complete by the end of March, but Hydro warned that a full restart could take six to twelve months. Aluminium Bahrain has already declared force majeure on some deliveries as well, citing logistics disruptions that make exports impossible.
This crisis arrives at a moment when the global aluminium market was already under considerable strain. China, the world's largest producer, has capped its smelting capacity at 45 million tons, effectively limiting how much additional supply can come from that direction. Western markets have been adjusting to the gradual removal of Russian aluminium from international trade following sanctions tied to the Ukraine conflict. London Metal Exchange inventories have fallen sharply—declining by more than 330,000 tons over the course of 2025 and dropping further in early 2026. To make matters worse, South32 announced that its Mozal smelter in Mozambique, which produces 560,000 metric tons annually, will be placed on care and maintenance after failing to secure a new electricity contract. The combination of these pressures has pushed the market into backwardation, a condition where immediate delivery commands a premium over future contracts. Last week, the cash premium over three-month contracts reached $47.4 per ton, the highest level since early 2022.
Analysts warn the rally could accelerate if the conflict persists. ING, the financial services firm, cautioned that in a severe scenario aluminium prices could briefly exceed $4,000 per ton, approaching the record levels reached during the energy crisis of 2022. The concern is not merely academic. Europe has gradually shut down many of its own energy-intensive smelters due to high electricity costs and now depends on the Gulf for roughly thirty percent of its aluminium imports. The United States relies on the region for more than twenty percent of its imported aluminium. With Russian supplies sanctioned and Western production in decline, buyers have few alternatives. As one analyst noted, the Europeans are particularly vulnerable because the Gulf stoppage coincides with the shutdown of Mozal, their long-term supplier in Mozambique.
India occupies a different position in this supply chain. Unlike Europe or the United States, India is itself a major aluminium producer, with large integrated smelters operated by companies such as Hindalco and Vedanta, supported by domestic bauxite reserves. The country does not depend heavily on imports to meet overall aluminium demand. However, India does import specific grades of primary aluminium and specialized alloys used in automobiles, electrical equipment, packaging, and engineering. Trade data from 2023 shows that India imported roughly $590 million worth of unwrought aluminium alloys that year, with Gulf producers—Qatar, Bahrain, and the United Arab Emirates—collectively supplying about half of those imports. In the narrower category of unwrought, non-alloyed aluminium, Gulf suppliers play a smaller role, accounting for roughly fifteen percent of India's $310 million in imports. This suggests India's exposure is less acute than Europe's, though the country will still feel the impact through higher global prices. Aluminium is widely used in Indian automobiles, power transmission cables, railways, construction materials, and consumer packaging. A sustained rise in global prices would push up input costs across these industries, even if physical supply remains available from alternative sources. At the same time, higher global prices could benefit Indian aluminium producers, who may find stronger export opportunities if shipments from the Gulf remain constrained by the closure of the strait.
Notable Quotes
Extended disruption in the Strait would simultaneously choke alumina inflows and aluminium exports for Middle Eastern smelters, tightening global supply meaningfully.— ING analysts
The Europeans are particularly concerned, as the Gulf aluminium stoppage comes just as long-term supplier Mozal is going offline.— Ed Meir, Marex analyst
The Hearth Conversation Another angle on the story
Why does a war in Iran suddenly matter for aluminium prices? I thought that was all about oil.
Oil gets the headlines, but the Strait of Hormuz is a chokepoint for something else entirely—the Gulf produces over eight percent of the world's aluminium, and almost all of it travels through that waterway. When the strait closes, you don't just lose energy supplies. You lose an entire industrial supply chain.
But can't aluminium come from somewhere else? China produces a lot.
China does, but they've capped their own capacity at 45 million tons. They're not expanding. And Europe has shut down most of its own smelters because electricity is too expensive there. So Europe now depends on the Gulf for thirty percent of its aluminium. There's nowhere else to turn.
What about the raw materials? Can't the smelters just draw down their stockpiles?
That's the trap. The smelters need bauxite and alumina shipped in from Australia and other places. Those ships are being diverted away from the Gulf because the strait is impassable. So the smelters can't get the materials they need to make aluminium, and they can't ship out what they've already made. It's a squeeze from both directions.
How bad is it already?
Bad enough that Qatalum, one of the largest smelters in Qatar, just shut down. They issued a force majeure—a legal declaration that they can't meet their obligations. The restart could take six to twelve months. And that's just the beginning. Analysts are warning prices could exceed four thousand dollars a ton if this drags on.
What does that mean for someone buying a car or building a house?
It means higher costs. Aluminium is in everything—car bodies, power cables, construction materials, packaging. If global prices stay elevated, those costs get passed down. For India, it's less severe because they produce their own aluminium, but they still import specialized grades. The real pain is in Europe and the United States, where there's almost no domestic production left.