Aluminum silicon alloy auto parts At present, the United States, Japan, and Germany are the countries that use the most aluminum alloys in automobiles, such as Germany's Volkswagen AudiA8, A2, Japan's NXS and other body-use aluminum alloys amounting to 80%. In addition to aluminum alloys used in Shanghai Santana, FAW Audi and Jetta (all imported production lines), there are many domestically produced red flags, about 80-100kg. Some data show that replacing the traditional steel structure with an aluminum alloy structure can reduce the mass of the car by 30% to 40%, the production of the engine can be reduced by 30%, and the production of the wheel can be reduced by 50%. The use of aluminum alloys is one of the important ways to reduce the weight of automobiles, protect the environment, save energy, increase speed and transport efficiency. Therefore, it is very necessary to research and develop aluminum alloy automobiles. The main advantages of aluminum alloys are light weight and good heat dissipation. With the development of engine technology, the valve structure has become the mainstream design trend of the engine.