Ordinary stainless steel is generally not resistant to chemical medium corrosion, while acid-resistant steel generally possesses corrosion resistance. The term "stainless steel" does not solely refer to a single type of stainless steel but signifies 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 determining the purpose, and then selecting the correct steel type. The steel types commonly associated with architectural and construction applications typically consist of only six varieties. 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 and corrosion-resistant steel. Steel that resists weak corrosive mediums such as air, steam, and water, or steel with corrosion resistance, is known as stainless steel; whereas, steel that resists chemical corrosives (acids, alkalis, salts, etc.) is called acid-resistant steel. Due to their differences in chemical composition, their corrosion resistance varies. General stainless steel is typically not resistant to chemical mediums, while acid-resistant steel generally possesses corrosion resistance.