You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.


    Integration of Galvanic Corrosion Control Technology into Design

    Published: Jan 1988

      Format Pages Price  
    PDF (76K) 4 $25   ADD TO CART
    Complete Source PDF (5.2M) 4 $55   ADD TO CART


    Corrosion and design are synergistic. Design affects the type and amount of corrosion that is likely to occur, and corrosion affects the functionality of a given design. As galvanic corrosion can result in rapid localized attack, its effects are often severe.

    The general relationship between open circuit potential, polarization, electrolyte resistivity, area ratio, and galvanic corrosion is well understood by corrosion engineers but is often not considered during design. Control of galvanic corrosion is most often accomplished by identifying probable sites for galvanic attack and either eliminating the possibility of galvanic corrosion through elimination of the dissimilar metals or by other means.

    Where atmospheric exposure is encountered, mitigation of galvanic effects can be accomplished by eliminating design features that trap and hold moisture, the use of sealants, or the use of welded versus bolted joints. The selection of fastener materials must also consider galvanic compatibility.

    In applications where the surfaces subject to galvanic attack are submerged, electrical isolation of dissimilar metals, control of the relative anodic and cathodic areas, the use of protective coatings, and the application of cathodic protection should be considered.

    The technology to control galvanic corrosion is well known to corrosion engineers but is often not considered during the design process. It is the responsibility of corrosion engineers to insure that corrosion control technology is incorporated into the design process. This may be achieved either by education of design engineers regarding galvanic corrosion or by the inclusion of a corrosion engineer in the design team.


    corrosion, galvanic corrosion, corrosion prevention, design, designers, design criteria, value engineering

    Author Information:

    Jenkins, JF
    Metallurgist, Naval Civil Engineering Laboratory, Port Hueneme, CA

    Committee/Subcommittee: G01.07

    DOI: 10.1520/STP26197S

    CrossRef ASTM International is a member of CrossRef.