Application conditions of 316 and 316L stainless steel in chlorinated aqueous solutions

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Type 316 stainless steel is suitable for general organic and inorganic media. For example, natural cooling water, cooling tower water, softened water ； carbonic acid ； Acetic acid and caustic alkali solutions with a concentration of <50% ； Alcohols and **solvents ； Dilute nitric acid at a temperature of ≤100℃ (concentration <20%), dilute phosphoric acid (concentration <30%), etc. However, it is not suitable for sulfuric acid. Due to its approximately 2% Mo content, it has better corrosion resistance in seawater and other chlorinated media than type 304, and can fully replace type 304. 316L stainless steel has essentially the same corrosion resistance and applications as 316 stainless steel. Due to its lower carbon content (≤0.03%), it has better weldability and corrosion resistance after welding, making it suitable for semi-welded or fully welded PHEs.