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 signifies over a hundred different industrial stainless steels. Each type of stainless steel developed excels in its specific application field. The key to success is first to determine the purpose, and then to identify the correct steel grade. The steel types typically used in construction and structural applications are usually only six. They all contain 17-22% chromium, with better grades also containing nickel. The addition of molybdenum can further...EnhanceAtmospheric corrosiveness, particularly resistance to corrosion from chloride-containing atmospheres.
Stainless steel is a shorthand for acid-resistant steel, referring to steel grades that resist corrosion from weak mediums such as air, steam, and water, or possess stainless properties. Conversely, steel that withstands corrosion from chemical agents (acids, bases, salts, etc.) is known as acid-resistant steel. Due to their differing chemical compositions, the corrosion resistance of the two varies; general stainless steel is typically not resistant to chemical corrosion, whereas acid-resistant steel generally possesses stainless properties.