Characteristics and application fields of automotive stamping steel

Automobile stamping is an important processing technology for the manufacture of automobile parts, which is used to produce large sheet metal parts such as body, door, roof, trunk lid and some small metal parts. The material in automobile stamping is usually made of strength steel to meet the safety and durability requirements of automobiles. This paper introduces the characteristics and application fields of automotive stamping steel.

1. Strength steel

Due to the increasing requirements for safety and durability of automobiles, automobile stamping steel also needs to have high strength and toughness. Strength steel generally refers to the yield strength of steel between 350 and 750MPa, tensile strength between 440 and 1140MPa. The strength and toughness of this steel can greatly reduce the weight of the body, while improving the safety and fuel saving performance of the car.

2. Hardened steel

Quenched steel is a kind of steel used in automobile stamping, and its strength and hardness are several times higher than ordinary steel. Quenched steel has high hardness, good strength and strong wear resistance, and is often used in the manufacture of transmission gears, piston pins, drive shafts and universal joints. However, the disadvantage of hardened steel is that it is easy to produce cracks, and attention needs to be paid to prevent stress concentration during use.

3. Galvanized sheet

Galvanized sheet is coated with a layer of zinc after surface treatment of steel plate to extend the service life of steel. Galvanized sheet not only has excellent corrosion resistance, but also has good stamping performance, widely used in the manufacture of automotive parts. For example, it can manufacture shell parts such as doors, roofs and trunk covers, as well as small metal parts such as wiper seats and switch parts.

4. Aluminum alloy

With the trend of lightweight of automobiles, the application field of aluminum alloy in automobile stamping steel is more and more broad. Compared with ordinary steel, aluminum alloy has the advantages of lighter, more rigid, and more corrosion resistance. It can manufacture large parts such as car bodies, doors, engine covers, driving chassis, and can also manufacture small metal parts such as wheels and water tanks.

In short, automobile stamping steel needs to have excellent strength, toughness, corrosion resistance, wear resistance and other characteristics to meet the safety and durability requirements of automobiles. Strength steel, hardened steel, galvanized sheet and aluminum alloy are widely used in automobile stamping steels at present. With the continuous development and innovation of automotive technology, the application of automotive stamping steel will be more and more diversified and personalized.