Some time ago, the PTJ’s expert team gave you a rough introduction to the advantages of imported aluminum alloys in the automotive manufacturing field. Many careful industry professionals have carefully browsed our website and called to ask us: which brand of material is more suitable for application. What about automotive machining?

In fact, each grade has its own characteristics, and they are suitable for different places in the automotive field. Today, the focus is on the application of the 5 series alloys in the automotive field.


There are many measures to reduce the weight of automobiles. The most important and most common method is to use lightweight materials. Among many materials, aluminum is the most widely used lightweight material. The density of aluminum is about 1/3 of that of steel. It is characterized by high strength, corrosion resistance, good thermal stability, easy formability, and recyclability. It also has mature application technology and is an ideal metal material for the automotive industry.

The 5 series aluminum alloys are also called magnesium aluminum alloys. At present, they are relatively large alloy types in the automotive field. The magnesium content accounts for 6% of the total mass. It can effectively reduce the hardness and strength of the product, thereby making the product easier to process. The hardness of the 5 series alloy is greater than that of the 3 series alloy, and the plasticity is strong, and it has very strong corrosion resistance, especially in seawater or marine atmospheric environment, its corrosion resistance is far better than other alloys of the same grade.

5 series alloys are used in the field of rail transportation. The alloy grades are mainly 5005, 5042, 5052, 5083, 5086, 5754, 5182, 5251. Products are mainly used in rail car bodies, transportation vehicles, ships, automobiles, building decoration, electronic appliances and other fields.

Lightweighting of automobiles is the direction of technological development of the modern automobile industry. Some aluminum tycoons have cooperated with CSR in all aspects in the areas of rail transit plates, large cross-section aluminum profiles, welding of railroad cars, construction of rail transit passenger equipment repair bases, etc. .

At present, although the aluminum alloy trailer is no longer new in China, but the market share is very small. The first aluminum alloy trailer in China began at the 2008 Taiyuan Truck Industry Exhibition and was developed by Baotou Yuli . It is only a few years so far, so it is far from universal use. However, both the transportation industry and the trailer manufacturing industry believe that lighter aluminum alloy trailers will inevitably replace steel trailers in the future.