Boating & Sailing

» dragonfly44 - Electrolysis

I would like to have the following information: Which combination will produce least amount of electrolysis: brass and stainless steel,or nickel and stainless steel?
dragonfly44

-- posted by dragonfly44

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» Alan Sorum - Electrolysis

In response to Electrolysis posted by dragonfly44:

Dragonfly44,

Sorry there hasn't been a faster response to your question. There was no title listed for your post, so it didn't show up in the list of current discussion topics.

The further two metals are apart on the galvanic series chart, the greater the potential current that can pass between them. The voltage range for 400 series stainless steel is -0.20 to -0.35, admirality brass is -0.25 to -0.34, and 90-10 copper nickel is -0.13 to -0.22. Using these three metals as examples, the nickel/stainless pairing would generate less corrosion. Brass is much further away on the scale. A note of caution, there are many different types of stainless steel, copper-nickel and brass or bronze used on boats. The best match will vary with the specific metal type used.

Thanks for the question.

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