Abstract
Types 304 and 316 stainless steel are widely and successfully utilized in piping and equipment to handle fresh waters. Occasionally, conditions are encountered that cause localized attack, usually crevice corrosion, of these alloys. In fresh waters of up to 1000 mg /L chloride content, Type 316 is shown to be resistant to initiation of crevice corrosion in severe crevice geometries. Type 304 is also shown to be resistant in 80 pct or more of very tight metal to nonmetal crevice sites in the same waters. Initiation of crevice corrosion in Type 304 is found to be more dependent upon existence of a critical crevice geometry, i.e., a gap dimension (tightness factor), than on the particular chloride ion concentration up to at least 1000 mg/L chloride ion. These exposure tests showed Type 304 and Type 316 to be considerably more resistant to crevice corrosion than earlier electrochemical tests reported by others.
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References
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Kain, R.M., Tuthill, A.H. & Hoxie, E.C. The resistance of types 304 and 316 stainless steels to crevice corrosion in natural waters. JMES 5, 205–211 (1984). https://doi.org/10.1007/BF02835718
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DOI: https://doi.org/10.1007/BF02835718