Both 304 and 316 belong to the series of austenitic stainless steels. The mechanical properties of the products are basically the same. The difference lies in the corrosion resistance of the products.The corrosion resistance of stainless steel is also conditional. A kind of stainless steel is corrosion-resistant in a certain medium, but may be damaged in another medium for a few hours. At the same time, the corrosion resistance of stainless steel is also relative. So far, there is no stainless steel that is absolutely corrosive, and no stainless steel is corrosion resistant in all environments. Generally, it is recommended to choose 316 material in marine, ship, sewage treatment and acid environments, which has high resistance to intergranular corrosion.
Selecting the appropriate stainless steel according to the use environment and purpose can prolong the service life and maintain a bright appearance.