Will galvanic corrosion occur ?

hello,


We are stud welding some threaded 304L studs to a low carbon steel substrate (large surface area) in an outdoor petro-chemical environment. We will typically attach a stainless steel (usually 304L) bracket or plate to the steel surface by means of the stud. Between the SS plate and the steel there will always be either a rubber gasket or a mastic which pretty much encapsulates (isolates) the dissimilar metal bond from the open air atmosphere. So the bottom side of the SS plate and the carbon steel beneath the SS plate are completely sealed from the atmosphere as well as all of the SS studs and their welded junctions where they meet the carbon steel.




Please help.
Thanks!


I didn't find the right solution from the Internet.



References:
www.chemicalprocessing.com/experts/corrosion/show/1045/




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