[China Inventory Continued to Decline This Week, Aluminum Prices Moving Sideways with LME Outperforming SHFE in the Short Term] If the US-Iran ceasefire agreement materializes, it would significantly ease Middle East supply concerns, but recurring military frictions leave the peace outlook uncertain, and the short-term geopolitical premium tends to converge but has not fully dissipated. The rigid supply gap outside China supported a relatively strong LME aluminum pattern. China's inventory continued to decline but remained at historically high levels, capping the upside elasticity of SHFE aluminum, and the divergence between LME and SHFE is expected to persist in the short term. Going forward, key areas to watch include whether China's inventory drawdown accelerates, whether the US-Iran agreement can be formally signed, further clarity on the US Fed's interest rate path, and whether China is further tightening regulations on aluminum capacity operations. Overall, aluminum prices are expected to move sideways in the short term with LME outperforming SHFE.

[SMM Aluminum Express News] Contact Energy has signed a non-binding power supply agreement with Rio Tinto to support the restart of the idle Line 4 potline at the New Zealand Aluminum Smelter in Tiwai Point. The restart would require around 50 MW of additional electricity and add approximately 30,000 tpy of aluminum production, while supporting development of Contact’s Southland Wind Farm. Rio Tinto estimates the project could generate around NZ$100 million annually in additional export revenue for New Zealand.

Rio Tinto announced that it had officially commenced commissioning of its $1.5 billion low-carbon aluminum smelter expansion project located in Quebec, Canada. The mining giant expected that the project would be fully operational by the end of this year, with all 96 new electrolysis pots at Complexe Arvida up and running by then. Upon completion, the smelter's annual primary aluminum capacity would increase by approximately 160,000 mt, and total aluminum production using low-carbon AP60 smelting technology would reach 220,000 mt. The AP60 expansion project would provide strong support for ELYSIS — a joint venture co-founded by Rio Tinto and Alcoa — in its transition toward carbon-free aluminum electrolysis technology.

[China Inventory Continued to Decline This Week, Aluminum Prices Show LME Outperforms SHFE in the Short Term] China inventory continued to decline this week but at a modest pace, limiting the upside elasticity of SHFE aluminum, with the divergence between domestic and overseas markets expected to persist in the short term. Key areas to watch going forward include whether China inventory destocking accelerates, whether the US-Iran deal can be formally signed, further clarity on the US Fed's rate path, and whether China is further tightening regulations on aluminum capacity operations. Overall, aluminum prices are expected to continue moving sideways in the short term, with LME outperforming SHFE.

SMM May 29 News: According to SMM statistics, China's aluminum production in May 2026 (31 days) was up 2.1% YoY and up 3.8% MoM. Although the pace of China's end-use demand recovery remained slow, the widening aluminum supply gap outside China significantly boosted domestic aluminum semis export demand, which in turn provided effective support for liquid aluminum consumption in China, driving apparent consumption to maintain positive growth. The proportion of liquid aluminum in China edged up, with the monthly proportion up 1.1 percentage points MoM to 76.5%, slightly above expectations at the beginning of the month, with the core incremental growth coming from export orders strengthening beyond expectations. Based on SMM's proportion of liquid aluminum calculation data, China's aluminum casting ingot volume in May declined 1.2% YoY and fell 0.9% MoM. Capacity changes: As of month-end May, SMM statistics showed China's existing aluminum capacity at approximately 46.209 million mt, with no MoM change. Production forecast: Entering June 2026, overall, as demand in markets outside China recovers, China's aluminum semis export orders are expected to continue improving, supporting a slight rebound in the proportion of liquid aluminum. Overall, the proportion of liquid aluminum is expected to rise 0.1 percentage points to 76.6%. [Data source statement: Data other than public information is derived from public information, market communication, and SMM's internal database models, processed by SMM for reference only and does not constitute decision-making advice.] Data source: SMM

SMM News, May 29: According to SMM statistics, the total output of primary aluminum overseas in May 2026 fell year-on-year by 9.9%, mainly due to large-scale production cuts at aluminum smelters in the Middle East. The average daily overseas output edged up 0.4% month-on-month, supported by production resumptions at smelters in the US, Spain and Iceland, as well as ramping-up output from new projects in Indonesia. As revealed in the Q4 and full-year financial report of Vedanta Aluminium for Fiscal Year 2026, Balco Aluminium Plant has launched the first production run on India’s most advanced 525kA primary aluminum production lines. The plant’s total production capacity has expanded to 1 million metric tons, and the project is expected to enter a steady output ramping phase. Looking ahead to June 2026, production resumptions at aluminum smelters in the US and Iceland will continue. Driven by high price levels, new primary aluminum projects in Indonesia will accelerate construction, and some are expected to commence power connection and commissioning gradually. The expanded capacity at Balco in India will keep ramping up. Overall, overseas primary aluminum output will remain in year-on-year decline in the short term, while the average daily output will maintain month-on-month growth amid ongoing production resumptions and capacity ramping of new projects. Market participants shall keep a close eye on official announcements from aluminum producers across the Middle East, Indonesia and India.