Austenitic stainless steels like 304H generally have good resistance to carbonic acid attack. Whether you see any long term corrosion problems in this unit will likely depend on the specifics of your application including what impurities are present. For example, under acidic conditions chlorides (even at low levels) are notorious for causing various forms of localized corrosion.
Topic: Re: Do austenitic stainless steels have good resistance to carbonic acid attack?11 January 2012
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