Classification of stainless steel automobile sheet metal parts according to the functional characteristics of steel

2019-10-23 22:06:46

Stainless steel automobile sheet metal parts are generally the general term of stainless steel sheet metal parts and acid resistant steel. Stainless steel sheet metal parts refer to the steel resistant to weak medium corrosion such as atmosphere, steam and water, while acid resistant steel refers to the steel resistant to chemical corrosive medium corrosion such as acid, alkali and salt. Stainless steel sheet metal parts come out at the beginning of this century, and have a history of more than 90 years.

The invention of stainless steel sheet metal parts is a great achievement in the world metallurgical history. The development of stainless steel sheet metal parts has laid an important material and technical foundation for the development of modern industry and the progress of science and technology. There are many kinds of stainless steel sheet metal parts with different properties, which gradually form several categories in the development process.

According to the structure, it can be divided into four categories: martensitic stainless steel sheet metal parts (including precipitation hardening stainless steel sheet metal parts), ferritic stainless steel sheet metal parts, austenitic stainless steel sheet metal parts and austenitic and ferritic duplex stainless steel sheet metal parts; according to the main chemical composition of steel or some characteristic elements of steel, it can be divided into chromium stainless steel sheet metal parts, chromium nickel stainless steel sheet metal parts and chromium. Nickel molybdenum stainless steel sheet metal parts, low carbon stainless steel sheet metal parts, high molybdenum stainless steel sheet metal parts, high-purity stainless steel sheet metal parts, etc.; according to the performance characteristics and use classification of steel, it is divided into nitric acid resistant stainless steel sheet metal parts, stainless steel sheet metal parts, pitting corrosion resistant stainless steel sheet metal parts, stress corrosion resistant stainless steel sheet metal parts, high-strength stainless steel sheet metal parts, etc.

According to the functional characteristics of steel, it can be divided into low temperature stainless steel sheet metal parts, non-magnetic stainless steel sheet metal parts, free cutting stainless steel sheet metal parts, superplastic stainless steel sheet metal parts, etc. At present, the commonly used classification method is based on the characteristics of steel structure, chemical composition and the combination of the two. Generally, it can be divided into martensitic stainless steel sheet metal parts, ferritic stainless steel sheet metal parts, austenitic stainless steel sheet metal parts, duplex stainless steel sheet metal parts and precipitation hardening stainless steel sheet metal parts, or it can be divided into chromium stainless steel sheet metal parts and nickel stainless steel sheet metal parts.