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Question:

Does aluminum touching stainless steel corrode or no? I need u-bolts to bolt down a SS piece and they are stee

Does aluminum touching stainless steel corrode or no? I need u-bolts to bolt down a SS piece and they are stee

Answer:

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yes two different metals will set up a red/ox reaction when they are wet, especially when salt is presentThe metal with the lower oxidation potential will corode, in this case the aluminumTo prevent it, you have to isolate the two metals electricallyOne way would be to use a home made insulatorfor example cut a piece of bleach bottle plastic the size and shape of the thing your bolting downAfter it's bolted use your multimeter and check for continuity between the two partsIf there is no electrical connection it won't corrode.

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