General stainless steel is generally not resistant to chemical medium corrosion, while acid-resistant steel generally possesses corrosion resistance. The term "stainless steel" does not simply refer to a single type of stainless steel but indicates over a hundred industrial stainless steels. Each type of stainless steel developed performs well in its specific application field. The key to success is first to determine the purpose, and then to identify the correct steel type. Steel types related to construction and structural applications usually only consist of six. They all contain 17-22% chromium, with better grades also containing nickel. Adding molybdenum can further...EnhanceAtmospheric corrosiveness, particularly resistance to chloride-containing atmosphere corrosion.
Stainless steel is a shorthand for acid-resistant steel, referring to steel grades that resist corrosion from air, steam, water, and other mild corrosive mediums or possess corrosion resistance. In contrast, steel that withstands chemical corrosion mediums (acids, alkalis, salts, etc.) is called acid-resistant steel. Due to their differences in chemical composition, the corrosion resistance of the two varies; general stainless steel is typically not resistant to chemical corrosion, whereas acid-resistant steel generally exhibits corrosion resistance.