Corrosion in SS316
Corrosion in SS316
(OP)
Hi all,
We have API 6A high pressure Gate Valve cladded with Inco 625 internal cladding. Seat pocket and Gate material is SS 316. My question is “ are we oaky to use Inco 625 and SS 316 combination in galvanic corrosion point of view ? Any localized corrosion ?
Service medium is Water.
Thanks
We have API 6A high pressure Gate Valve cladded with Inco 625 internal cladding. Seat pocket and Gate material is SS 316. My question is “ are we oaky to use Inco 625 and SS 316 combination in galvanic corrosion point of view ? Any localized corrosion ?
Service medium is Water.
Thanks





RE: Corrosion in SS316
This isn't because of the 625, it is just that 316 has mediocre pitting resistance.
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P.E. Metallurgy, Plymouth Tube
RE: Corrosion in SS316
Regards
RE: Corrosion in SS316
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P.E. Metallurgy, Plymouth Tube
RE: Corrosion in SS316
Regards
RE: Corrosion in SS316
In such cases, if SS 316 corrodes by its own due chloride presence in water, then what is the further impact ?
1) Will combination of dissimilar metal (SS 316 & Inco 625) further aggravate pitting corrosion of SS 316 in chloride presence?
2) Any control measures to mitigate such problems ?
Regards