Interaction between 70/30 Cu-Ni and 316L? 1

[rachwill]

I'm sure this will be a "no-brainer" to all you clever people out there, but I'm not up on my electropotentials and galvanic cells etc., so here goes:

Would using a combination of 70/30 Cu-Ni and 316L piping on a hydraulic power unit (water-glycol media) in a below decks marine environment cause any appreciable galvanic corrosion?

 

[Metalguy]

I think you'd be OK if the glygol has a decent corrosion inhibitor in it. There isn't much difference between the potential of the two metals. In something like salt water you might have a problem, but probably not in your case.