NOTICE

Forums are temporarily disabled while we are working on a new login procedure.

When migrating the old forums over to our new forums we were unable to retain the identity of the authors, so the old posts will show up as "anonymous". All NEW posts will show up credited to their authors. So please participate and share knowledge just as you have in the past.

You must log in if you are an existing user or register if you are a new user in order to contribute to the discussions.

Discussion Forums - The Hendrix Group
HomeHomeDiscussionsDiscussionsGeneral Corrosi...General Corrosi...316L on saltwater316L on saltwater
Previous
 
Next
New Post
1/30/2004 9:00 AM
 
I have built some chillers for saltwater tanks using 3/8" 316L tubing as evaporator (direct contact with the saltwater). The tubing was bent to form coil and placed in an acrylic container. The inlet and outlet of the tubing in this container were secured using cable clamp. Today I found that one of them (built 2 months ago approx.) has a (refrigerant) leak on the 316L tubing. When I checked it, it was a terrible corrosion right on the spot where it was clamped (only one of them). Other part of the tubing which exposed to the saltwater doesn’t corrode at all, looks as if it was new. What might has caused this? While it's not happen on the other side of the clamp. For biological possibility, there might some bacteria lived on this spot and secrete something very acid that might caused this corrosion. Is it possible? Thanks in advance, Jim.
 
New Post
2/11/2004 9:00 AM
 
Jim: Your description suggests crevice corrosion. Hope this helps! David Hendrix The Hendrix Group Inc.
 
New Post
2/12/2004 9:00 AM
 
Dave, thnaks for your response. Do you have any suggestion to avoid this happen again? And why this happen only on that location? The other surface which has direct exposed to the saltwater does not show the sign of corrosion. Should I use titanium tube for this? Thanks a lot.
 
New Post
2/13/2004 9:00 AM
 
Dear Sir: With 316SS you need to avoid crevices and stagnant conditions in seawater. Hope this helps! David Hendrix The Hendrix Group Inc.
 
Previous
 
Next
HomeHomeDiscussionsDiscussionsGeneral Corrosi...General Corrosi...316L on saltwater316L on saltwater


  

News

With a little delay, our Calculation of Ammonium Salt Deposition Temperatures...read more
Our sulfidic corrosion calculators are now available at hghouston.com/calcula...read more

Stay Current

Sign up for our quarterly newsletter

covering updates on corrosion

Sign Up