Steel wheel is a kind of wheel made of iron and steel, and it is also the earliest used automobile wheel material, which has the characteristics of low price, high strength, good wear resistance and simple processing technology, it is still widely used in all kinds of modern low-end cars and trucks. Its main disadvantages are high quality and poor aesthetics. The main choice of steel wheel materials is carbon steel, ductile iron, other steel materials. Most of the carbon steel wheels are used in general power performance vehicles, its low strength, poor resistance to external forces, brake heat generation of the car heat dissipation performance is limited, it is difficult to process decorative patterns on the surface of carbon steel, but its price is more economical, and it is the first choice for many low-end vehicle wheel materials. Ductile Iron Wheel has better mechanical properties than carbon steel wheel, but it is more difficult to control the shape than carbon steel wheel during processing, so the processing cost is higher and the economy is not good. In recent years, other steel materials such as some alloy steels are used more and more as automobile wheel materials, it has the advantages of higher strength, lighter weight, better heat dissipation, good processing and molding performance, easy to weld and so on, and has been favored by the majority of automobile parts manufacturers.