Reply To: Aluminum or stainless or brass…or galvanized

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July 25, 2019 at 7:09 pm #179480
frankr
Participant

    Google “Galvanic Series”. Ever wonder why stainless steel screws are so hard to get out of our aluminum outboards? It is because aluminum and SS are so far apart on the chart. It is the aluminum that corrodes in the presence of SS and forms that white powdery stuff that locks them together.. It may come as a shock to see that aluminum / steel are pretty close together and less vulnerable to galvanic corrosion.