Views: 0 Author: Site Editor Publish Time: 2023-11-02 Origin: Site
Stainless steel can be classified into two main categories based on its chemical composition: chromium (Cr) stainless steel and chromium-nickel (Cr-Ni) stainless steel. The corrosion resistance of stainless steel is primarily influenced by the carbon (C) content and the precipitation of carbides. Therefore, stainless steel with lower carbon content is preferred for better corrosion resistance, typically with a carbon content of ≤0.08%. However, the high-temperature mechanical performance of heat-resistant steel is determined by the stable carbide precipitates in its structure, so heat-resistant steel generally has higher carbon content, usually above 0.20%.
Stainless steel can also be classified based on its metallographic structure, including ferritic stainless steel, martensitic stainless steel, austenitic stainless steel, and duplex stainless steel (which contains both ferrite and austenite phases in its structure).