Material composite trend: Aluminium alloy is composited with carbon fibre and engineering plastics (e.g. aluminium silicon carbide composites), which is used in motor shells and bearing parts, with a 30% increase in heat dissipation efficiency, and is suitable for the needs of high-power electric drive systems.
Recycling of recycled aluminium: about 75% of aluminium alloys used in automobiles come from recycled aluminium, and the energy consumption per tonne of recycled aluminium is only 5% of that of primary aluminium, which is in line with the goal of ‘double carbon’.
Increasing penetration rate:In 2024, the volume of aluminium alloy used in automobiles in China will reach 14 million tons, a year-on-year growth of 12%, of which the volume of aluminium used in new energy vehicles will reach 180kg (about 140kg for traditional fuel vehicles), and it is expected that it will break through 200kg/vehicle in 2025 (Source: China Nonferrous Metals Industry Association).
Cost advantage: the comprehensive cost of aluminium alloy parts is 15%-20% lower than that of steel parts (considering processing energy consumption and recycling value).
Green manufacturing: Promote ‘renewable power + carbon capture’ primary aluminium production process (e.g. Hydro’s zero-carbon aluminium technology), with the goal of achieving a 50% reduction in carbon emissions over the entire life cycle of aluminium used in automobiles by 2030.
The large-scale application of aluminium alloys not only promotes the reduction of energy consumption of automobiles (for every 100kg of weight reduction, the fuel consumption of 100km will be reduced by 0.3-0.6L), but also supports the sustainable development of the industry through the material recycling system. With the popularity of heat-treatment-free aluminium alloys (such as the NT2.0 platform material jointly developed by Azera) and ultra-high pressure die-casting technology, aluminium alloys will continue to play a central role in the wave of new energy automobile lightweighting, and will become a typical example of high-end manufacturing empowered by chemical materials.
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