SS316L, AL6XN, or Aluminum in Chloride Atmosphere
SS316L, AL6XN, or Aluminum in Chloride Atmosphere
(OP)
We need to replace vent on large steel tank used for chlorination and water storage (2 mg/l Cl). About 6 months ago, we installed vent made of bare SS304 and it already shows significant corrosion (rust and pitting). We want to avoid paint finishes. We are considering SS316L, AL6XN, or Aluminum. How should we decide? A 12-month field test is not OK. Thanks in advance





RE: SS316L, AL6XN, or Aluminum in Chloride Atmosphere
Al6XN is better, but quite expensive. 29-4C would be another alternative. Aluminum would fail quicker than 304.
RE: SS316L, AL6XN, or Aluminum in Chloride Atmosphere
Don't use AL29-4C or Sea-Cure (superferritics) if there will be much field welding or if you need structural strength. They are both only available in light gages.
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Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: SS316L, AL6XN, or Aluminum in Chloride Atmosphere
Along the same lines, 2507 is one more step up from 2205, but not as available, I think. EdStainless would know better than I since he's still in the game.
RE: SS316L, AL6XN, or Aluminum in Chloride Atmosphere
RE: SS316L, AL6XN, or Aluminum in Chloride Atmosphere
RE: SS316L, AL6XN, or Aluminum in Chloride Atmosphere
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm