Key Takeaways:
Four Chinese aluminum producers reported first-half net profit at least doubled, as high electrolytic aluminum prices and falling alumina costs pushed margins to multi-year highs.
"The upstream aluminum sector is operating at full capacity with strong margins, while midstream players are racing to build new-energy aluminum foil lines," Shanghai Securities News reported, citing company filings and industry data.
Tianshan Aluminum Co., Shenhuo Co., Zhongfu Industry Co. and Jiaozuo Wanfang Aluminum Co. all posted H1 2026 net income that more than doubled from a year earlier, according to their preliminary earnings announcements. The gains reflect a favorable cost structure: LME aluminum has traded near $2,450 per tonne, up about 12 percent year-over-year, while alumina prices fell roughly 18 percent in the first half as bauxite supply constraints eased.
The profit surge comes as China's aluminum sector enters a two-speed phase. Upstream smelters are running at near-full utilization rates, with Shanghai Futures Exchange aluminum inventories declining through the first half. Meanwhile, midstream fabricators are accelerating capital expenditure into high-value-added aluminum foil capacity targeting lithium-ion battery and new-energy vehicle applications — a shift that requires significant upfront investment before contributing to earnings.
Alumina Cost Tailwind Narrows
The margin expansion is directly tied to the alumina-aluminum price spread. Alumina, the refined intermediate used to produce electrolytic aluminum, accounts for roughly 35 to 40 percent of smelting costs. After spiking in late 2025 on bauxite supply disruptions from Guinea, alumina prices retreated in H1 2026 as Guinea exports normalized and Chinese domestic refinery output recovered.
That reversal created a window of unusually wide margins for smelters that source alumina externally or produce it internally at lower cost. Tianshan Aluminum, which operates its own alumina refining capacity, was among the biggest beneficiaries, according to its filing.
The cost advantage may narrow in the second half. Alumina prices have stabilized in recent weeks, and any renewed supply disruption — particularly from Guinea, which supplies more than 70 percent of China's bauxite imports — could compress margins quickly.
Aluminum Foil Expansion Accelerates
Companies are channeling cash into downstream capacity. Multiple producers announced plans to build or expand aluminum foil production lines targeting the new-energy sector, where demand for battery foil and capacitor foil is growing at an estimated 20 to 25 percent annually, according to industry data cited by Shanghai Securities News.
The expansion wave mirrors a broader pattern across China's metals sector: upstream producers enjoying windfall profits reinvest into higher-margin downstream products, creating a capital cycle that increases midterm supply and eventually compresses processing margins. The dynamic is most advanced in copper foil, where overcapacity has already driven processing fees below breakeven for some producers.
Aluminum foil capacity additions take 12 to 18 months to come online, meaning the current wave of investment will begin contributing to supply in late 2027. Until then, the sector's profitability depends on aluminum prices staying above $2,300 per tonne and alumina costs remaining contained — conditions that look sustainable for the remainder of 2026 but face growing uncertainty in 2027 as global aluminum supply expands and Chinese property-sector demand remains weak.
This article is for informational purposes only and does not constitute investment advice.
