Galvanic Corrosion of Piping and Fitting Alloys in Sulfide-Modified Seawater

    Volume 8, Issue 2 (March 1980)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 6


    Hack, HP
    MetallurgistMember of ASTM, Naval Ship Research and Development Center, Annapolis, Md.

    Abstract

    Two wrought piping alloys, 70-30 and 90-10 coppernickel, were each galvanically coupled to each of four fitting alloys in sulfide-modified seawater for 30 days. The fitting alloys used were bronze (Composition M), cast Monel®, wrought nickel-aluminum bronze, and cast 70-30 copper-nickel. The piping material to fitting material area ratio was 3:1 and the seawater velocity was 2.4 m/s. Results indicated that the galvanic relationship between M-bronze or Monel and 70-30 copper-nickel is affected by sulfide additions, in a manner that increases the corrosion of the fitting material, whereas similar couples with 90-10 copper-nickel show little effect of sulfide.


    Paper ID: JTE10598J

    DOI: 10.1520/JTE10598J

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    Author
    Title Galvanic Corrosion of Piping and Fitting Alloys in Sulfide-Modified Seawater
    Symposium , 0000-00-00
    Committee G01