An aluminum alloy sidewall frame for high-speed trains is a key structural component designed to enhance performance, durability, and efficiency in modern passenger cars. Made from specially engineered aluminum profiles, this frame offers high strength, high thermal conductivity, and superior mechanical properties, making it ideal for the demanding conditions of high-speed train operations. Compared to traditional stainless steel structures, the use of aluminum material greatly reduces overall weight and energy consumption, contributing to improved speed and environmental protection. The corrosion resistance of aluminum oxides formed on the surface further extends the service life of the side wall. Due to the properties of aluminum, such as a wide range of applications and enhanced performance, aluminum alloy frames have become an essential choice in modern railway engineering.