SAE AMS-QQ-P-35A-2005 PDF

Scope: This specification covers the different types of passivation treatments as well as recommendations@ guidance and precautions for cleaning and descaling corrosion-resistant parts@ components@ equipment and systems. Purpose: This specification covers the method for cleaning and descaling of stainless steel parts and outlines the final cleaning stage or passivation treatments for use on austenitic@ ferritic@ martensitic and precipitation hardening corrosion resistant steels. Engineering drawings and specifications should specify classification type (passivation treatment) which should be used in accordance with 1.2.1. Types: Passivation treatments shall be of the following types@ as specified (see 6.2). Type II - Medium temperature nitric acid solution with sodium dichromate additive Type VI - Low temperature nitric acid solution Type VII - Medium temperature nitric acid solution Type VIII - Medium temperature high concentration nitric acid solution

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