The lightweight of automobile is to reduce the servicing quality of automobile as much as possible under the premise of ensuring the strength and safety performance of automobile, so as to improve the power of automobile, reduce fuel consumption and reduce exhaust pollution. Experiments show that the fuel consumption will be reduced by nearly half if the vehicle mass is reduced by half. Due to the need of environmental protection and energy conservation, the lightweight of automobile has become the trend of the world's automobile development.

1、 Industry assistance, lightweight technology is an important development direction of the automobile industry

"Made in China 2025" emphasizes that "lightweight is still the top priority" in the overall planning of automobile development; In 2016, the China Society of Automotive Engineering released the road map of energy conservation and new energy vehicle technology, pointing out that the lightweight technology of automobile will become one of the key development goals of the automobile industry in the future. Among them, the weight of the whole vehicle will be reduced by an average of 20% by 2025, the proportion of automobile steel will account for 30% of the total weight of the vehicle, the amount of aluminum alloy for single vehicle will reach 250 kg, the amount of magnesium for single vehicle will reach 25 kg, and the amount of carbon fiber will account for 2% of the total weight of the vehicle, The specific target of vehicle lightweight is put forward

2、 The ban on the sale of fuel vehicles around the world is approaching, so it is urgent to lighten them

European region first: the European Commission proposed in the European 2020 Strategy that it would gradually form industrial competitiveness based on a green and low-carbon economy, guided by "innovation" and "green"; The Road Map to a Competitive Low-Carbon Economy in 2050 also proposed that the carbon emissions of the EU in 2050 should be reduced by 80% to 95% compared with 1990. Rome, Italy, will ban the sale of diesel cars as early as 2024, and then the Netherlands and Norway will start to ban the sale of fuel cars in 2025. In March 2019, Hainan Province put forward a timetable for "banning the sale of fuel vehicles" in 2030, and won the official announcement in June 2020, marking the first shot of China's ban on the sale of fuel vehicles. In the future, with the improvement of the requirements of global environmental protection standards, the time of banning sales in various regions of China will be pushed forward, and vehicle lightweight will become an important way to save energy and reduce emissions.

3、 Aluminum has obvious advantages in automobile lightweight

Aluminum alloy is one of the most widely used nonferrous metal structural materials in industry. Its physical properties are low density, high strength and good plasticity. It can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance, and is widely used in industry. The downstream of aluminum alloy is mainly concentrated in the fields of automobile manufacturing, construction and structure, mechanical manufacturing, and electronic products. Aluminum alloy is mainly applied in various fields with two products: cast aluminum alloy and deformed aluminum alloy.

Tesla leads the lightweight of new energy vehicles. As a leading enterprise in the field of new energy vehicles, Tesla has continued to increase its weight in the light of new energy vehicles, has a very deep technical foundation, and has lightened its models in many ways. On the body bracket, Tesla ModelS uses the all-aluminum alloy body to effectively reduce the body weight;

Therefore, aluminum has achieved a decisive feature and irreplaceable role in automobile lightweight, with obvious advantages. From January to December 2020, the aluminum consumption of China's automobile market was 3.2751 million tons. It is predicted that the aluminum consumption of China's automobile industry will increase from 3.8 million tons in 2018 to 9.1 million tons in 2030, with a CAGR of 8.9%. In 2030, the aluminum consumption of freight cars and new energy vehicles will reach 1.4 million tons, with a compound annual growth rate of 11%.

In the next few years, we will vigorously develop automobile lightweight, and invest in the construction of automobile lightweight chassis, battery, etc., which will become the next wind. We believe that many aluminum industries will also gain a lot of investment and return by virtue of this momentum.