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Galvanic Corrosion

Galvanic Corrosion

Galvanic Corrosion

(OP)
Good Morning.
Can dupplex stainless steel Gr.5A and 254SMO(CK3MCuN) be welded in seawater condition?. I think there's no problem with galvanic corrosion, since they have nearly the same corrosion potential, but I need to be sure, if anyone could help.....

Thanks in advance¡¡

RE: Galvanic Corrosion

With over-alloyed filler the welds should not be worse than either alloy.  The alloys are close enough that I would not expect any galvanic issues.

Since you are welding a duplex you should make sure that your weld qualification includes A923 testing.  You wouldn't want to be forming detrimental secondary phases in either alloy.

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Plymouth Tube

RE: Galvanic Corrosion

(OP)
Thanks¡¡¡, I'll have what you two said in mind.

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