reappearing rust on stainless.
reappearing rust on stainless.
(OP)
After passivating our 316l base mtl and 316l filler wire welds we have roccuring rust spots appearing on occaisonal joints how can we check to ensure that these spots will not reoccur without waiting a week. how long would it take for rust spots to reappear after applying a saline solution. or is there another method we could use to speed up the process.





RE: reappearing rust on stainless.
It sounds like you have some cleaning issues. I suggest that try to get to the root cause of this.
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Plymouth Tube
RE: reappearing rust on stainless.
http://www.finishing.com/306/58.shtml
RE: reappearing rust on stainless.
the first link give a run down of the different tests that show up in the ASTM link.
http://w
http://www.astm.org/Standards/A967.htm
RE: reappearing rust on stainless.
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Plymouth Tube
RE: reappearing rust on stainless.
Are you pickling prior to passivation? If so, you may have a contamination problem with rinse water, material handling, etc... One of the main purposes of pickling is to remove scale and free iron.
RE: reappearing rust on stainless.
RE: reappearing rust on stainless.