Cathodic Protection for 316 Stainless Steel
Cathodic Protection for 316 Stainless Steel
(OP)
Greetings
My question concerns the use of cathodic protection for a 316 stainless steel seawater screen.
I believe that any type of stainless steel will not need cathodic protection, as stainless steel in general is pretty resistant to corrosion.
However, the screen will be submerged in seawater at all times. I've read online that stainless steel structures in a "splash zone" will require cathodic protection. I don't know if being submerged in seawater will facilitate the need for cathodic protection.
Any advice? Thanks in advance.
My question concerns the use of cathodic protection for a 316 stainless steel seawater screen.
I believe that any type of stainless steel will not need cathodic protection, as stainless steel in general is pretty resistant to corrosion.
However, the screen will be submerged in seawater at all times. I've read online that stainless steel structures in a "splash zone" will require cathodic protection. I don't know if being submerged in seawater will facilitate the need for cathodic protection.
Any advice? Thanks in advance.





RE: Cathodic Protection for 316 Stainless Steel
There are many ramifications to you proposal so if you could comeback with a little more information it would be great help in getting better advice.
What is it mounted to?
Is the intake flow all time?
Will you screen have any crevices?
RE: Cathodic Protection for 316 Stainless Steel
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdoweb/
RE: Cathodic Protection for 316 Stainless Steel
If you really want it to last in seawater without protection you will need to use a 6% Mo super-autenitic or a super-ferritic stainless.
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Plymouth Tube
RE: Cathodic Protection for 316 Stainless Steel
1) The screen is mounted to a 316 stainless steel frame. The bolts will also be 316 stainless steel.
2) Yes, seawater will be flowing all the time.
3) This is a brand new screen. The space between the bolts and the frame could be possible crevices, but I'm not sure.
EdStainless
What is considered a reasonable life? I do not have much experience so your input would be greatly appreciated.
Thank you everyone for your help.
RE: Cathodic Protection for 316 Stainless Steel
RE: Cathodic Protection for 316 Stainless Steel
Michael McGuire
http://stainlesssteelforengineers.blogspot.com/
RE: Cathodic Protection for 316 Stainless Steel
Please can you advise, Instrument Unit (316 SS) being imerssed in ground water (high water table - wet season. The units are going to be insulated (from cold).
What is the best solution for it:
1- Coated first with Epoxy coating, then wrap it with insulating materil.
RE: Cathodic Protection for 316 Stainless Steel