1.1

Scope. This standard defines and classifies galvanic compatibility of electrically conductive materials and establishes requirements for protecting electrically conductive materials in a dissimilar couple against galvanic corrosion. Recommendations for protective coatings are provided. This standard also outlines the procedures required to generate electrochemical data for the analysis of new electrically conductive materials, coatings, and surface treatments. Data collected in this standard was completed in static, immersion conditions in artificial seawater in accordance with ASTM D1141 (without heavy metals).

1.2

Applicability. This standard is applicable to all military equipment parts, components and assemblies. Other standards may take precedence for specific applications.

1.3

Methodology. The galvanic current, which was determined from the joint polarization curve, was used to calculate the corrosion rate of the anodic member of the couple. If the corrosion rate for the anodic member is above 0.009 mil/year, the pairing is considered incompatible. The methodology for determining the galvanic corrosion rate of the anodic member of a galvanic couple is outlined in Appendix B.