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Localized pitting of Stainless Steel in inhibited HCl
May 6, 2009
Please help; I do not know how to explain why stainless steel part have some pitting area after Sc. Conditioner and inhibited HCl treatment.
Galina Kofmanengineer in cleaning shop - Hayward, California
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May 11, 2009
Sight unseen, my guess is that you have used the dip for a while and now have a ferric chloride build up which is far more aggressive than inhibited HCl and significantly more aggressive than plain HCl.
James Watts- Navarre, Florida
May 12, 2009
In addition to James' point (with which I totally agree), the chloride itself will wreak havoc on many stainless steels, whether or not the acid is inhibited. The inhibitor is restricting the action of the H+ part of the acid. It doesn't affect the Cl- part.
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