world gathers for metal finishing
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Passivation Type Call-Out
What different types of passivation are there?. The print call-out says per QQ-P-35 type optional. The material is 304L
Richard FordMachine Shop - Albuquerque, NM, USA
July 9, 2009
QQP35 has four types, two of which are recommended for 304.
You can read it at http://assist.daps.dla.mil/quicksearch/
Also note that QQ-P-35C
[affil link or DLA]
has been replaced by ASTM A967
[affil link]
and SAE/AMS2700
[affil link] for aerospace, both of which allow citric type passivation as well as the nitric. Let us know if we can help.
Ray Kremer
Stellar Solutions, Inc.
McHenry, Illinois
July 14, 2009
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