"corrosion in presence of chloride"

Question:

"We are a stainless steel (304 2b finish) window manufacturer and i want to know if 304 stainless. Steel has always a better resistance to chlorides than mild steel or galvanized steel for any type of chloride. These windows will be used in the desert where apparently the level of chloride is high but i don't know which type of chloride."

Answer:

The effect of chlorides with respect to corrosion is different with carbon steel, compared with 304SS. The austenitic stainless steels (304SS) are susceptible to pitting corrosion (and SCC at higher temperatures) in all aqueous chlorides to some degree at ambient temperatures. Acid chloride solutions will be more aggressive than neutral or alkaline chloride solutions.

 

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