Rio Tinto, Century Aluminium lift US billet premiums by 12% amid supply crunch

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Rio Tinto and Century Aluminium have raised aluminium billet premiums in the United States by around 12 per cent amid supply disruptions linked to the Iran war, news sources reported on April 8, 2026.

The two producers increased premiums by about 3 cents per pound, bout USD 110 per tonne, compared to pre-war levels. Rio Tinto is also pushing customers to sign multiyear contracts at the revised rates.

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The increase reflects disruptions in aluminium flows from the Persian Gulf, which accounts for nearly 20 per cent of US imports. With supply routes under strain, US buyers are turning more to domestic producers, where supply remains tight and prices are elevated.

Aluminium prices have climbed over 10 per cent since the conflict began in late February 2026. The US Midwest premium has surged to a record USD 1.1325 per pound.

供应紧张下，力拓与世纪铝业将美国铝棒溢价提高12%

2026 年 4 月 8 日消息，受中东冲突引发铝供应中断影响，力拓与世纪铝业将美国市场铝棒溢价上调约 12%。

两家生产商较冲突前水平每吨加价约 110 美元（每磅 3 美分），力拓同时推动客户按新价格签订多年期合同。

此次调价直接反映波斯湾铝供应受阻带来的影响，该地区供应占美国铝进口总量近 20%。供应链承压后，美国采购商转向本土供应商，但本土供应同样偏紧、价格高企。

自 2026 年 2 月底冲突爆发以来，铝价累计涨幅超 10%，美国中西部铝溢价飙升至每磅 1.1325 美元的历史高位。

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