Galvanic Corrosion Between Alloy 800 and 825 Weld

[mechdude777]

Hello everyone

Can anyone shed any light on the likelihood or credibility of galvanic corrosion between alloy 800 and 825 as a dissimilar metal weld? To provide some context, two pipes of equivalent size and dimensions would be welded together, and their internal surface areas would be wetted. They are both relatively close on the galvanic series but no two alloys have the same galvanic potential, so its theoretically possible to corrode.

Thanks in advance for the insight.

 

[EdStainless]

What is the fluid?
Temperature?
Conductivity?
Is there any sign of corrosion on either alloy?

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P.E. Metallurgy, consulting work welcomed