国信期货有色（铝产业链）周报：供需过剩预期下，关注氧化铝成本支撑宏观与基本面逐渐形成共振，沪铝及铝合金预计偏强-20250912

1. Report Industry Investment Rating No relevant content provided. 2. Core Views of the Report - Alumina prices are expected to fluctuate weakly and approach the cost line, with support around 2,800 - 2,900 yuan/ton, due to supply - side复产, increased imports, and lack of short - term domestic demand growth, although potential risks at the Guinea mine end may provide a price safety cushion [16][147][151]. - Shanghai Aluminum is expected to fluctuate strongly. The Fed's September interest rate cut expectation provides macro - level support, and the strengthening of the peak - season fundamentals, along with inventory de - stocking, will drive up the price. Existing long positions can be held [16][147][151]. - Casting aluminum alloy is expected to fluctuate strongly. The rise in aluminum prices drives up alloy prices, and the increase in raw material costs and the improvement in demand from the automotive market support the price, despite high inventory levels [18][148][152]. 3. Summary by Directory 3.1 Market Review - Macro and Important Information: In August, the US CPI rose 0.4% month - on - month and 2.9% year - on - year. The market expects the Fed to cut interest rates by 25 basis points in September. Aluminum will be classified as both "critical minerals" and "growth minerals" in the UK's upcoming strategy. Qinghai Baihe Aluminum plans a 500,000 - ton capacity upgrade project [8][9]. - Spot Market: As of September 12, the average domestic alumina spot price was 3,077.47 yuan/ton, down 68.84 yuan/ton from September 5. The average price of aluminum (A00) in the Yangtze River Color Market was 21,020 yuan/ton, up 360 yuan/ton from September 5 [12]. - Supply and Demand: As of September 11, the national alumina weekly operating rate was 82.78%, up 1.23% from the previous week. China's electrolytic aluminum production in August 2025 was 3.7326 million tons, a year - on - year increase of 1.22%. The operating rate of domestic electrolytic aluminum capacity in August reached 96.1%. The operating rate of domestic aluminum downstream processing leading enterprises was 62.1%, up 0.4% from the previous week. The aluminum processing industry PMI in August was 53.3%, up 9.2% from July [12]. - Cost and Profit: As of September 11, the average full cost of alumina was about 2,902 yuan/ton, up 16 yuan/ton from September 4, and the average industry profit narrowed to about 180 yuan/ton. The smelting cost of Chinese electrolytic aluminum was about 16,437 yuan/ton, down about 180 yuan/ton from September 4, and the average industry profit expanded to about 4,400 yuan/ton [13]. - Inventory: As of September 11, the aluminum ingot inventory was 625,000 tons, down 1,000 tons from September 4, and the aluminum rod inventory was 132,500 tons, down 7,500 tons from September 4. As of September 12, the SHFE electrolytic aluminum warehouse receipt inventory was 72,469 tons, up 12,508 tons from September 5. From September 4 - 10, LME aluminum inventory increased by 600 tons to 48,527 tons [13]. - Market Trends: This week, alumina fluctuated downwards, Shanghai Aluminum and aluminum alloy fluctuated upwards [16]. 3.2 Alumina Fundamental Analysis - Spot: The domestic alumina spot price continued to fall this week, and the spot premium narrowed to about 150 yuan/ton [30]. - Supply: As of September 11, the national alumina weekly operating rate was 82.78%, up 1.23% from the previous week. In August 2025, China's metallurgical - grade alumina production increased month - on - month and year - on - year [34]. - Imports and Exports: On September 11, the FOB price of alumina in Western Australia was 338 US dollars/ton, down 30 US dollars/ton from September 5. The alumina import window opened, increasing domestic supply pressure [35]. - Cost and Profit: As of September 11, the average full cost of alumina was about 2,902 yuan/ton, up 16 yuan/ton from September 4, and the average industry profit narrowed to about 180 yuan/ton [37]. - Inventory: As of September 11, the alumina port inventory was 55,000 tons, down 8,000 tons from the previous week, at a near - 4 - year low. In July, China's alumina export volume increased both month - on - month and year - on - year [42]. 3.3 Electrolytic Aluminum Fundamental Analysis - Cost: As of September 12, coal prices in major regions fluctuated. The single - degree electricity price in Yunnan in September slightly decreased to about 0.382 yuan/degree. The price of pre - baked anodes in major production areas remained stable this week [50][54]. - Cost and Profit: As of September 11, the smelting cost of Chinese electrolytic aluminum was about 16,437 yuan/ton, down about 180 yuan/ton from September 4, and the average industry profit expanded to about 4,400 yuan/ton [56]. - Supply: In August 2025, China's electrolytic aluminum production was 3.7326 million tons, a year - on - year increase of 1.22%. The operating rate of domestic electrolytic aluminum capacity in August reached 96.1%, the highest in the same period in the past four years [58]. - Spot: As of September 12, the average price of aluminum (A00) in the Yangtze River Color Market was 21,020 yuan/ton, up 360 yuan/ton from September 5 [61]. - Price Trend and Premium: This week, the Shanghai Aluminum main contract fluctuated strongly, the spot price in the spot market rose, and the spot was at a discount. LME aluminum fluctuated strongly this week, and the spot was at a premium [67]. - Demand: As of September 11, the operating rate of domestic aluminum downstream processing leading enterprises was 62.1%, up 0.4% from the previous week. In August, the aluminum processing industry PMI reached 53.3%, rising above the boom - bust line [68]. - Inventory: As of September 11, the aluminum ingot inventory decreased by 1,000 tons from September 4, and the aluminum rod inventory decreased by 7,500 tons from September 4. As of September 12, the SHFE electrolytic aluminum warehouse receipt inventory increased by 12,508 tons from September 5. From September 4 - 10, LME aluminum inventory increased by 600 tons to 48,527 tons [71][76]. - Imports and Exports: The aluminum ingot import profit window closed. In August 2025, China exported 534,000 tons of unwrought aluminum and aluminum products, and the cumulative export from January to August was 3.996 million tons, a year - on - year decrease of 8.2% [80][83]. - End - Use Markets: The real estate market is slowly recovering, and the performance of new energy vehicles is relatively bright. From September 1 - 7, the national new energy vehicle retail sales were 181,000 units, a year - on - year decrease of 3%, and the cumulative retail sales this year were 7.752 million units, a year - on - year increase of 25% [92]. 3.4 Aluminum Alloy Fundamental Analysis - Raw Materials: The supply and price of scrap aluminum are important factors affecting the cost of aluminum alloys. The price of scrap aluminum has been rising, and the price difference between refined and scrap aluminum has changed [100][105]. - ADC12: The cost and profit of ADC12 are affected by raw material prices. The spot price of ADC12 has changed, and the overseas price and import profit also show certain trends. The production volume of ADC12 and the import and export volume of aluminum alloys have their own characteristics [111][114][122]. - Demand: The automotive industry is the main demand end for casting aluminum alloys. The demand for casting aluminum alloys has seasonal characteristics, and the new order index has increased since August [126][134]. - Inventory: The inventory of aluminum alloys includes social inventory and factory - level inventory, and the current inventory level is relatively high [137].