Aluminium price climbs as Asia premium spikes: supply and capex signals for miners
Reviewed by Tom Sullivan
First reported on MINING.com
30 Second Briefing
Aluminium prices climbed above $3,400/t on the LME, up 4% in a week, as war-related disruption in the Middle East and an effective closure of the Strait of Hormuz cut off around 9% of global supply and forced major smelters in Qatar and Bahrain to declare force majeure on shipments. Rio Tinto has offered Japanese buyers a Q2 premium of $350/t over the LME cash price, about 40% higher than its previous proposal and the highest Japan has faced since 2015, driven by stronger European and US premiums plus higher freight and insurance. The LME–Shanghai premium is now at its widest since April 2022, potentially pulling more primary metal exports from China, where March shipments are expected to rise by more than 5% year-on-year on demand from AI hardware and solar manufacturing.
Technical Brief
- Three-month LME aluminium futures added 0.6% on Wednesday, pushing above $3,400/t intraday.
- Force majeure at major smelters in Qatar and Bahrain directly interrupts contracted deliveries of finished aluminium.
- Japan’s quarterly benchmark premium for primary aluminium is set via negotiations like Rio Tinto’s Q2 offer.
- Rising freight and marine insurance costs are explicitly cited as key drivers of the higher Q2 premium.
- The LME–Shanghai premium is now at its widest since April 2022, altering export arbitrage economics.
- Chinese aluminium exports in March are estimated to increase by >5% year‑on‑year, driven by AI and solar demand.
Our Take
With Rio Tinto setting a Q2 aluminium premium of $350/t into Japan, smelters in higher‑cost regions such as Europe and the US are likely to see improved margins, which can support decisions to keep marginal capacity online rather than curtailing during periods of power-price volatility.
Middle East producers now accounting for around 9% of global aluminium output means any disruption or policy shift in hubs like Qatar and Bahrain can have an outsized effect on Asian physical premia, even if LME prices move more slowly in response.
The estimated 5% year‑on‑year rise in Chinese March aluminium exports, alongside a 4% weekly futures gain, signals that traders and fabricators in Asia may increasingly rely on Chinese semi-finished product to arbitrage between lower domestic prices in Shanghai and higher regional premia into Japan and other Asian markets.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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