304 Steel Rust Phenomenon Causes

Chloride ions are widely present, such as salt, sweat, sea water, sea breeze, soil and so on. In the presence of chloride ions, stainless steel corrodes quickly, even more than ordinary mild steel. Chloride ions form complexes with Fe in alloying elements, reducing the positive potential of Fe, and then being oxidized by oxidants that deprive electrons.
Therefore, there are requirements for the use of stainless steel environment, and it is necessary to wipe frequently, remove dust, and keep clean and dry.
316 and 317 stainless steels are molybdenum containing stainless steels. The molybdenum content in 317 stainless steel is slightly higher than 316 stainless steel. Because 316 stainless steel contains molybdenum, the overall performance of the steel is better than 310 and 304 stainless steel, under high temperature conditions, when the concentration of sulfuric acid is lower than 15% and higher than 85%, 316 stainless steel has a wide range of uses. 316 stainless steel also has good resistance to chloride erosion, so it is usually used in Marine environments.