ASTM G 69, “Standard Practice for Measurement of Corrosion Potentials of Aluminum Alloys,” is a useful method to discern the temper of a given aluminum alloy. Corrosion potentials (Ecorr) often can be used to differentiate between different alloys since copper or zinc in solid solution will cause significant differences in Ecorr. Measured Ecorr of various aluminum alloys and other non-aluminum metals were listed.

Subject
Water, Precipitates, Free corrosion potential, Solid solutions, Copper alloys, Metals, Zirconium alloys, Monel alloys, Zinc, Aluminum alloys, Alloys, Corrosion potential, Aging
Keywords:
ASTM G 69, aluminum alloys, copper, corrosion potential, zinc
NACE International
1993
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