Marine Atmospheric SCC of Unsensitized Stainless Steel Rock Climbing Protection |
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Authors: | A Sjong L Eiselstein |
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Affiliation: | (1) Sjong Consulting, LLC, 2525 Arapahoe Ave., Ste. E4, Boulder, CO 80302, USA;(2) Exponent, Inc., 149 Commonwealth Drive, Menlo Park, CA 94025, USA |
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Abstract: | A failure investigation into the root cause of fixed austenitic stainless steel climbing anchor hardware in tropical marine
climates has been presented. The incident 316L climbing anchor was fixed in a seaside limestone cliff in southern Thailand
and underwent transgranular chloride stress corrosion cracking (TGSCC) after 10 years of service. Since stainless steel does
not normally undergo stress corrosion cracking (SCC) at ambient temperatures, the conditions known to promote ambient temperature
TGSCC of austenitic stainless steel are reviewed. A mechanism that may give rise to TGSCC in limestone climbing anchors in
warm marine environments is postulated. |
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Keywords: | Austenitic stainless steel Corrosion failure analysis Stress corrosion cracking Failure mechanism |
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