Aluminum Alloy Special Vehicle Market Situation
The global aluminum alloy special vehicle market is experiencing significant expansion. In 2024, the global aluminum alloy trailer market size has reached 221.267 billion RMB, with the Chinese market accounting for about 29.3% (64.831 billion RMB). It is expected that by 2030, the global market size will exceed 354.86 billion RMB, with an annual compound growth rate of 8.19%. This growth is mainly driven by three core factors:
Policy and environmental protection needs: Aluminum alloy materials can reduce the weight of special vehicles by 20%-30% and improve fuel efficiency by 10%-15%.
Cost-effectiveness optimization: Although the initial purchase cost of aluminum alloy is higher than that of steel, the cost advantage of the whole life cycle is significant. Taking the aluminum alloy oil tank semi-trailer as an example, its service life can reach more than 15 years, which is 5-8 years longer than that of steel tank body, and the maintenance cost is reduced by 40%.
Accelerated technology iteration: Breakthroughs in welding processes (such as stir friction welding) and surface treatment technologies (nano coating) have solved the problems of insufficient strength and corrosion resistance in the early days of aluminum alloy.
Core alloys
5083 aluminum alloy
As an Al-Mg-Mn alloy, its tensile strength is above 215MPa, and its elongation is ≥10%. It has excellent weldability and corrosion resistance. 5083 h111 is its main temper. 5083 h111 mechanical properties is very good. Typical applications include:
Tank truck tank: 5083 aluminum alloy is used for tanks for transporting petroleum and chemical liquids. The thickness can be reduced by 20%, the payload can be increased by 15%, and the stress corrosion resistance is better than that of traditional steel.
Refrigerated truck structural parts: It still maintains good toughness in a low temperature environment of -40℃, and no additional anti-corrosion coating is required on the surface, and the service life is extended to more than 12 years.
5454 aluminum alloy
Its strength is 20% higher than that of 5052 alloy, and it is especially suitable for harsh corrosive environments. 5454 h32 aluminum sheet is its main temper.
Food tanker: 5454 aluminum alloy’s resistance to chloride ion corrosion makes it the first choice for dairy and beverage tanks, avoiding metal ion contamination that may be caused by steel tanks.
Pressure vessels: In refrigerated containers and compressed natural gas transport vehicles, 5454 aluminum alloy can withstand pressures above 20MPa, while meeting lightweight requirements, and reducing the tank’s deadweight by 25%.
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