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Letter 24021
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Ken Vlach |
Both the DOD QQ-P-35C [link is to spec at TechStreet] and the AMS-QQ-P-35 [link is to spec at TechStreet] have been canceled and are no longer specifications to be used for passivation.
QQ-P-35c is replaced by ASTM A-967 except for aerospace, which should use AMS 2700B (replacement for AMS QQ-P-35).
Commercial citric acid formulations are an alternative to the nitric formulations.
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I just checked for the latest revision for AMS QQ-P-35 And the SAE website is still showing Revision: MAY 1998, I can not find where this has been (Canceled and replaced with AMS-2700 [link is to spec at TechStreet]B) can you please let us know where we may find this information?
Thank you,
Jim Denton
Anodizer - Elkhart, Indiana
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+++ AMS QQ-P-35 was canceled in April of this year by SAE/AMS Committee B, reconfirmed in the September meeting. It was canceled in favor of AMS-2700 [link is to spec at TechStreet]. The cancellation apparently still has not been put through the paperwork at SAE.
++++++ Most of my suppliers have their own standard of passivation process and they are not certain whether they conform to the AMS-2700 [link is to spec at TechStreet]B standards. What must I ensure that exist in the passivation process of my suppliers before I declare that it is within the AMS 2700B standards. Masrurah Marzuki
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