Corrosion resistance evaluation of 304L stainless steel
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Before the revision of national standards in 2006, 304L stainless steel had quite good corrosion resistance. Why does it exhibit poor corrosion resistance in recent years, with severe damage caused by weak acids? I would appreciate it if experts could help analyze which element in 304L plays a key role in its corrosion resistance
It depends on the specific medium; 304L cannot be used in the presence of Cl-
It is an environment with virtually no Cl present in the system, with a Cl content of less than 3 PPm
304L is an austenitic stainless steel with a high chromium content; it should have good resistance to weak acids, but I’m not sure what medium you are referring to In all chromium-based stainless steels, it is chromium and nickel that play a key role in their corrosion resistance; particularly chromium, which can oxidize to form stable chromium oxide in normal environments, thereby providing corrosion protection
If your medium temperature does not exceed 150 degrees! ! Use a pipeline with a glass lining! !