Stainless steel classification

There are many kinds of stainless steel with different properties, and it has gradually formed several categories in the development process.
According to the structure, it is divided into four categories: Martensitic stainless steel (including precipitation hardening stainless steel), ferritic stainless steel, austenitic stainless steel and austenitic ferrite duplex stainless steel.
According to the main chemical composition of steel or some characteristic elements in steel to classify, divided into chromium stainless steel, chromium nickel stainless steel, chromium nickel molybdenum stainless steel and low carbon stainless steel, high molybdenum stainless steel, high purity stainless steel;
According to the performance characteristics and uses of steel, it is divided into nitric acid resistant stainless steel, sulfuric acid resistant stainless steel, pitting stainless steel, stress corrosion resistant stainless steel, high-strength stainless steel, etc.
According to the functional characteristics of steel, it is divided into low-temperature stainless steel, non-magnetic stainless steel, free-cutting stainless steel, super-plastic stainless steel and so on. The commonly used classification method is classified according to the characteristics of the structure of the steel and the characteristics of the chemical composition of the steel and the combination of the two methods. Generally divided into martensitic stainless steel, ferritic stainless steel, austenitic stainless steel, duplex stainless steel and precipitation hardening stainless steel, or divided into chromium stainless steel and nickel stainless steel two categories.