hydrochloric acid added to a stainless tank
hydrochloric acid added to a stainless tank
(OP)
Hi all,
We have a small 316 SS tank that we use for passivating small stainless components with a 50/50 mix of water and Nitric acid 42BE.
A new employee changed out the tank last night and added Hydrochloric acid to the water instead of Nitric acid. By time the acid was pumped out, it had etched/pitted the tank.
It doesn't appear that any of the pitting is too deep, and this is probably a stupid question, but can we still use the tank for Nitric acid?
I wasn't sure if the stainless tank had some sort of protective layer that the hydrochloric has eaten away leaving it unsuitable for our passivation process.
Thanks for your help!
We have a small 316 SS tank that we use for passivating small stainless components with a 50/50 mix of water and Nitric acid 42BE.
A new employee changed out the tank last night and added Hydrochloric acid to the water instead of Nitric acid. By time the acid was pumped out, it had etched/pitted the tank.
It doesn't appear that any of the pitting is too deep, and this is probably a stupid question, but can we still use the tank for Nitric acid?
I wasn't sure if the stainless tank had some sort of protective layer that the hydrochloric has eaten away leaving it unsuitable for our passivation process.
Thanks for your help!





RE: hydrochloric acid added to a stainless tank
RE: hydrochloric acid added to a stainless tank
If you do please post.
RE: hydrochloric acid added to a stainless tank
have a look at this page of BSSA for Nitric Acid passivation:
http://www.bssa.org.uk/topics.php?article=68
also
http://www
http:/
s
Corrosion Prevention & Corrosion Control
RE: hydrochloric acid added to a stainless tank
Kim
RE: hydrochloric acid added to a stainless tank
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Plymouth Tube
RE: hydrochloric acid added to a stainless tank
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: hydrochloric acid added to a stainless tank
If you saw roughening of the base metal you may have lost a significant amount of metal out of the welds.
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Plymouth Tube