STRESS CORROSION CRACKING BEHAVIOR OF WROUGHT FE-CR-NI ALLOYS IN MARINE ATMOSPHERE

Five year test results are reported on stress corrosion cracking (SCC) susceptibility of FeCrNi austenitic steels exposed boldly and sheltered to a marine atmosphere at Kure Beach, North Carolina. Materials were AISI 201, 301, 302, 304, 304L, 309, 310, and 316 steels; Inconel 600, Incoloy 800, and 825, and Carpenter 20Cb-3. Only one specimen exhibited SCC during the tests. No SCC was observed in sensitized alloys with less than 0.043% C; specimens with 0.043 to 0.083 had mixed resistance, and when C was over 0.083, all alloys failed. Material surface temperature was monitored to assess the validity of a contention that a 100 C temperature gradient causes tensile stress. There was no evidence of such an effect. Susceptibility of laboratory sensitized and welded materials to SCC is not the same. There may be a threshold C content below which SCC in sensitized alloys may not be expected.

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  • Corporate Authors:

    National Association of Corrosion Engineers

    P.O. Box 1499
    Houston, TX  United States  77001
  • Authors:
    • Money, K L
    • Kirk, W W
  • Publication Date: 1978-7

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Filing Info

  • Accession Number: 00190425
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Mar 28 1979 12:00AM