Aluminum alloy materials for automobile bodies mainly include 2000 series, 5000 series, 6000 series alloy plates, profiles, pipes and high-performance cast aluminum. Different types of aluminum alloy materials are used for different stressed parts.
Frame part: The part of the car body that is more stressed, using 2000 series or 7000 series seamless aluminum tubes for automotive, which can be strengthened by heat treatment.
Skin part: the secondary stress part of the car body, using 5000 series or 6000 series materials.
Door part: use 5000 series or 6000 series materials.
Floor part: use 5000 series or 6000 series materials.
Interior part: use 1000 series or 5000 series materials, without heat treatment strengthening.
Seat part: 2000 series or 6000 series materials are used, which can be strengthened by heat treatment.
2000 series alloy seamless aluminum tubes for automotive is an aluminum alloy that can be strengthened by heat treatment. It has excellent forgeability, high strength, good welding performance, and good baking strengthening effect, but its corrosion resistance is worse than other series of aluminum alloys. . At present, 2036 and 2022 alloys have been partially used in automobile body panels.
The 5000 series alloy seamless aluminum tubes for automotive
is an aluminum alloy that cannot be strengthened by heat treatment. It has good corrosion resistance and welding performance. However, it may produce Lüdes line and delayed yield during processing and deformation in the annealed state, so it is mainly used for shapes such as body inner panels. Complicated parts.
