On April 7, the main domestic alumina futures contract (2605) weakened again, closing the day down nearly RMB2.9% at 2,673 per ton. This represents a nearly 15% correction from the March 19 high of RMB3,136 per ton.
In the spot market, following a modest rally in March 2026, the domestic alumina market has recently shown signs of peaking and then retreating.
The domestic alumina market has recently exhibited a pattern of rising first and then falling, with a pullback from high levels. Both futures and spot markets have weakened in tandem, and market sentiment has clearly turned more cautious. This round of price fluctuations is driven by a combination of bauxite cost support, temporary supply contraction, shifts in demand patterns, and adjustments in the futures-spot linkage. The industry is currently transitioning from a tight supply-demand balance to a more relaxed one, with prices entering a consolidation phase. Based on the SunSirs benchmark price as of April 8, the analysis of the industry chain’s driving logic and future market trends is as follows.
I. Raw Material Costs: Bauxite Supports the Bottom, While Energy and Freight Costs Drive Up Expenses
Bauxite is the core raw material for alumina production, and costs provide strong support for prices. On April 8, the SunSirs bauxite benchmark price stood at 486.67 RMB/ton. Imported bauxite prices remained stable with a slight upward trend. Coupled with expectations of tighter overseas supply policies, market concerns over bauxite shortages have intensified, pushing up alumina production costs. Meanwhile, high international oil prices have driven up both maritime and inland freight rates, further increasing production and logistics costs and creating a significant buffer against price declines. Caustic soda, a key auxiliary material, had a SunSirs benchmark price of 3,125.00 RMB/ton on the same day, remaining at elevated levels and continuing to intensify cost pressures on the production side. The combination of these multiple raw material factors provides strong support for alumina prices at the bottom, making a sharp decline unlikely.
II. Supply Dynamics: Short-Term Tightening Followed by Gradual Easing; Spot-Futures Convergence Triggers Correction
Tight supply conditions in early March were the primary driver of price increases. With some production facilities undergoing scheduled maintenance and new capacity in southern China yet to come online, market supply was limited. Holders of inventory held firm on prices and were reluctant to sell, driving spot prices higher. From late March through April, the supply situation shifted rapidly: basis differentials continued to narrow, spot and futures traders became more willing to sell, and low-priced inventory gradually entered the market; new production capacity in Guangxi is scheduled to come online in mid-to-late April, with output steadily recovering; overseas primary aluminum production cuts expanded, increasing imports of alumina, which are expected to arrive in port in mid-April, leading to continued easing of overall domestic supply. The shift from tight to ample supply directly reversed market expectations, becoming the primary driver behind the price surge and subsequent decline.
III. Demand Side: Stable Essential Demand but Cautious Purchasing; Downstream Sectors Show Increased Willingness to Press for Lower Prices
The downstream primary aluminum industry maintained essential restocking, but the overall purchasing pace slowed significantly. On April 8, the SunSirs primary aluminum benchmark price stood at 24,496.67 RMB/ton. End-user demand remained stable, with no concentrated surge in volume. Most aluminum smelters have ample raw material inventories and a strong willingness to negotiate lower prices; only a few enterprises are restocking as needed, resulting in generally weak market transactions. The sharp decline in futures prices has dampened sentiment in the spot market, cooling the enthusiasm of traders and downstream buyers. Essential demand is insufficient to sustain further price increases, and the weakening demand side has further accelerated the price correction.
IV. Price Trends: Futures and Spot Prices Correct in Tandem; Short-Term Volatility Prevails
The futures market led the downturn. On April 7, the main alumina futures contract fell sharply, correcting nearly 15% from its previous high. Spot prices followed suit, and upward momentum rapidly faded. The weighted monthly average price of alumina in March rose by 3.12% month-on-month, but since April, the pace of spot price increases has continued to narrow, and tender prices have edged lower. Last week, the national average spot price of alumina was 2,774.08 RMB/ton. Current spot prices are trading within a range of 2,720–2,840 RMB/ton, with the divergence between futures and spot prices narrowing as the market enters a period of consolidation and caution. V. Outlook: Mixed Market Sentiment, Narrow Range Fluctuations Predominant
The alumina market has entered a critical transition period: factors that previously supported price increases—such as plant maintenance and tight spot supply—are gradually fading, while bearish factors—including the release of new capacity, increased imports, and inventory buildup—are gradually emerging. On the cost side, bauxite and energy costs continue to provide support, limiting downside potential; however, ample supply and cautious demand are suppressing upside potential. Amid this interplay of bullish and bearish factors, short-term prices are expected to fluctuate within a narrow range, remaining stable but slightly weak, with little likelihood of a one-sided trend.
In the medium to long term, three key variables warrant close monitoring: changes in overseas bauxite supply policies, the progress of new domestic capacity coming online, and the pace of downstream primary aluminum production and restocking. If supply policies tighten more than expected, cost support will strengthen again; if capacity is released in a concentrated manner and demand remains persistently weak, prices may fall further. Overall, the alumina market is shifting from being supply-driven to a supply-demand tug-of-war, with price volatility narrowing; a trend-driven market will require new catalysts.
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