Alloy 625 & 316SS, Dissimilar Metal Compatibility

[Instrument1352]

Hi,
We have an instrument where one piece is Inconel alloy 625 in touch with the body of 316SS.
It is in fact a rupture disk (thin plate) of Alloy 625) with a 316SS holder at both sides.
I do not think there would be a dissimilar metal corrosion issue here however appreciate if you could please share your thoughts on this.
Thank you

 

[EdStainless]

the 316 should have been chosen for suitability for the service.
The 625 was chosen because of the particular demands for the RD (strength, fatigue, zero corrosion).
Both alloys should be corrosion resistant in the application of there should be no issues.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed

 

[Instrument1352]

Hi Ed,
Thank for your reply. Although I do not think it would be an issue, my question was to ensure there is no dissimilar metal galvanic corrosion concern. Any thoughts?
Thanks