At present, the aluminum alloy materials commonly used for high-speed rail trains are mainly 5-series, 6-series and 7-series aluminum alloys, which are mainly used in important structures such as body frame, roof, side wall, underframe, sleeper beam and so on. Among them, 7N01 aluminum alloy is a kind of high-strength aluminum alloy. Its rolled plates and profiles are widely used in high-speed car body.
7N01 aluminum alloy, first developed in Japan, is a 7-series heat treatable strengthened aluminum alloy with good extrusion properties. The addition of Mn, Cr, Ti, V and other trace elements in the alloy further improves the mechanical properties and welding properties of the alloy. In view of the excellent comprehensive performance of 7N01 aluminum profile, it has a wide application prospect in the body structure of high-speed train.
7N01 aluminum profile has high strength, corrosion resistance and good extrusion performance. It can be extruded into thin-walled profiles with complex structure. It has excellent welding performance. After aging treatment after welding, its strength can be close to that of wood. It is an ideal strong welding structural material.
