有色金属：十倍增长潜力来袭：镁合金耐蚀性突破开启市场增量新蓝海

Investment Rating - The industry investment rating is "Positive" [5] Core Viewpoints - Magnesium alloy has significant potential for growth due to its low density and high specific strength, making it an advantageous lightweight metal in the automotive sector [2] - Traditional magnesium alloys have limited applications in vehicles due to poor corrosion resistance, with an average usage of about 15 kg per vehicle [3][19] - Recent advancements in new stainless magnesium alloys have greatly improved corrosion resistance and reduced costs, opening new opportunities for application in automotive lightweighting [4][26] Summary by Sections 1. Lightweight Advantages of Magnesium Alloys - Magnesium alloys are lighter and have a higher specific strength compared to common materials like aluminum and steel, with a density of approximately 1.74 g/cm³ [18] - The excellent casting performance of magnesium alloys allows for their use in complex structural components in vehicles [18] 2. Traditional Applications of Magnesium Alloys in Automobiles - The primary applications of magnesium alloys in vehicles include components such as steering wheels, instrument panel supports, and seat frames, primarily in non-corrosive environments [19][23] - The estimated usage of magnesium alloys in traditional applications is around 15 kg per vehicle [25] 3. Technological Breakthroughs - Traditional magnesium alloys suffer from poor corrosion resistance and ductility, limiting their widespread use [27][30] - New stainless magnesium alloys have shown corrosion resistance improvements of 10 to 50 times compared to conventional magnesium alloys, achieved without significantly increasing costs [31] - The new alloys also exhibit enhanced ductility, allowing for better forming capabilities, which is crucial for mass production in the automotive industry [35] 4. Potential New Applications for New Stainless Magnesium Alloys - The new alloys are expected to find applications in electric vehicle components, such as battery and motor housings, which could significantly reduce weight [36][39] - The potential single vehicle usage of magnesium alloys could reach approximately 145 kg, representing a tenfold increase from current levels [42] - The overall potential market size for magnesium alloys in the automotive sector could exceed 2.3 million tons annually, based on current production levels [42]