What are the causes of rust in 304 Stainless Steel

Chloride ions are widely present, such as table salt, sweat stains, seawater, sea breeze, soil, and so on. Stainless steel in the presence of chloride ions, corrosion is fast, even more than ordinary mild steel, chloride ions and Fe in the alloying element to form a complex, Fe positive potential decreased, and then by the oxidant to take away electrons and oxidize.

Therefore, there are requirements for the use environment of stainless steel, and it is necessary to wipe frequently, remove dust, and keep it clean and dry.

316 and 317 stainless steels are molybdenum-containing stainless steel grades. The molybdenum content in 317 stainless steel is slightly higher than that of 316 stainless steel. Because 316 stainless steel contains molybdenum, the total performance of this steel grade is better than 310 and 304 stainless steel, under high temperature conditions, when the concentration of sulfuric acid is less than 15% and higher than 85%, 316 stainless steel has a wide range of uses. 316 stainless steel also has good chloride erosion resistance, so it is commonly used in marine environments.