Galvanic Corrosion

[arceki]

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¡¡

 

[EdStainless]

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

 

[strider6]

i agree that galvanic corrosion should not ne an issue, i will try to avoid area ratio that can increase the likelihood of galvanic effect.



Galvanic Series Seawater



S

Corrosion & Rust Prevention Control

 

[arceki]

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