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Aluminium prices rise after Trump flags new US import tariffs

London aluminium prices increased on Monday, and copper traded at the U.S. Comex Exchange widened its premium over the London benchmark. This was after U.S. president Donald Trump announced he would impose 25% new tariffs on steel and aluminum imports.

Trump told reporters that he will announce new metals duties on Monday, while on Air Force One Sunday morning on his way to New Orleans for the NFL Super Bowl.

LME's three-month aluminum was up 0.3% to $2,635.50 per tonne by 1138 GMT. On Friday, the contract reached a new two-week high at $2651.

The U.S. depends heavily on aluminium imports, mainly from Canada. The U.S. prices of primary aluminum are based on LME benchmark plus Midwest premium. This premium has been increasing in recent months, and last was at $0.305 per lb. It is the highest price since July 2022.

Ewa Mnthey, a commodities expert at ING, said that tariffs could result in higher aluminum prices in the U.S. This would increase costs for U.S. consumers.

Trump announced that in addition Monday's announcement, he would announce reciprocal tariffs Tuesday or Wednesday. These tariffs will take effect almost instantly and apply to all countries.

The benchmark three-month copper price on the London Metal Exchange rose by 0.1%, to $9,412 per metric ton. It had previously reached its highest level since November 8 at $9530.

The most active U.S. Comex Copper futures rose 0.7% to $4.6223 a lb. This represents an unusually large premium over the LME copper price of $778 a ton.

LME Zinc fell by 0.3% per ton to $2,830.50. Lead lost 0.4% at $1,984.50. Tin gained 0.3% at $31,200. Nickel remained steady at 15,755.

(source: Reuters)