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Letter 29014
Post Wash of Nitric solution from
passivate
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I am cuurently producing a stainless steel hinge (304 ss) that
requires passivate. If the hinge is not taken apart, the (2) leaves
and the hinge pin, does the Nitric acid from passivate have any
adverse effect to the stainless if not completely washed?
TED HOFFMANN
JOB SHOP - MACHINING - Caledonia, MICHIGAN, USA
++++
The nitric acid left on the spring will definitely cause problems.
You can get pit corrosion upon ageing in addition to the hazard of
the acid itself when it might touch another surface.
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