US aluminum buyers hunt for alternatives as Iran war upends global supply

Aluminum buyers in the US are rushing to secure alternative supplies from Asia as the war on Iran disrupts a major foreign source — a development that threatens to hike the cost of the metal used in auto parts, appliances and beverage cans.

An effective halt on shipments through the Strait of Hormuz has already prompted two top producers in the region, Qatar and Bahrain, to suspend deliveries to customers. The US relies heavily on imports, with the Middle East supplying nearly a fifth of its aluminum last year, according to government data.

Andy Massey of Bonnell Aluminum said the company, which molds aluminum into shapes that can be used in products including cars and construction materials, is looking to source the metal from markets such as India and Australia. The Georgia-based manufacturer may even tap the domestic market for near-term deliveries if there’s metal that isn’t tied up in annual contracts.

“We’re all scrambling to figure out what’s happening on the ground” in the Middle East, said Massey, Bonnell’s vice president of metals, procurement and transportation. “I need to find alternative supplies over the next two days — fast — and make sure we don’t overpay.”

The Middle East supply turmoil comes at a particularly fragile moment for American aluminum consumers. They’ve already been squeezed by President Donald Trump’s import tariffs on the metal, which have driven up domestic prices and constrained flows from Canada, the largest foreign supplier to the US. Even brief interruptions to the supply of aluminum, prized by manufacturers for its abundance and low cost, can cause chaos for factories that tend to buy it on a just-in-time basis.

RM-Metals, a New Jersey-based supplier of specialty metal products, is facing a quandary similar to Bonnell’s. It’s seeking alternative sources as some of its shipments remain stuck in Dubai, according to vice president Sam Desai.

“Korea is a great option right now,” said Desai, adding that his firm is also looking at supplies from northern Europe. “It’s becoming very hard because the cost of aluminum itself has gone up” since the Iran war started.

Prices of the lightweight metal traded on the London Metal Exchange soared to the highest since 2022 this week. The so-called US Midwest premium — the amount added to global benchmarks to deliver aluminum to that region — climbed to a fresh record of $1.075 a pound. Before the Iran crisis, American manufacturers were already paying among the highest aluminum prices worldwide due to Trump’s 50% tariffs.

While aluminum from India is the most likely seaborne replacement for American consumers, shipping it across the Pacific takes about 60 days, according to Jean Simard, chief executive officer of Aluminum Association of Canada. Other alternatives include Brazil, Indonesia, Iceland and Norway, said Timna Tanners, an analyst at Wells Fargo Securities.

Meanwhile, shipments from Canada — the most obvious alternative for US buyers — have continued to decline under Trump’s tariffs. Producers there have increasingly favored Europe, where net returns have been more attractive than selling into the US market. At the same time, expectations that the levies could be eased or repealed in coming months have made US buyers wary of locking in large volumes, for fear of overpaying if the tariffs are later rolled back.

It could be “a timely moment to review” the US tariffs on Canadian aluminum, Simard said. Those levies, which fall under a law that allows duties on certain sectors to protect national security, weren’t affected by the recent Supreme Court decision that struck down other Trump tariffs.

About 6 million tons of primary aluminum — metal that has not yet been recycled — is now stranded in the Middle East, according to Simard. There is about 30 days’ supply of alumina, the raw material used to make aluminum, left for most smelters in the region, he said.

As the Iran crisis persists, aluminum producers in the Gulf region may have to curtail production as the near-shutdown of the Strait of Hormuz means they may soon run out of alumina. Those output cuts would have a sustained impact on global supply.

The regional conflict is likely to worsen a global aluminum deficit this year, according to Bank of America.

“Given the Middle East accounts for around 9% of global production and supply is at risk, we have raised our shortfall forecast to 1.5 million tons from 1 million tons,” analysts at the bank led by Michael Widmer said in a note Thursday.

Some suppliers are already going offline. Qatalum, jointly owned by Qatar’s state-owned aluminum producer and Norway’s Norsk Hydro ASA, said on Tuesday that it started a controlled shutdown of output because of a natural gas shortage, adding that a full restart could take six to 12 months.

“This could just be the tip of the iceberg. There could be more smelters affected, in which case this magnifies the impact,” said Tanners. “Aluminum smelters need to run full out — if not, they’re just going to shut. This isn’t a quick fix.”

(By Yvonne Yue Li, Jacob Lorinc and Mathieu Dion)