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AMERICAN STANDARD of TESTING MATERIALS Standards

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	Stainless Steel
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	Pickling
	Passivation

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	ASTM A967-01e1 10-Oct-2001
	Regardless of which treatment is selected, the passivation effectiveness must be confirmed by one or more specified test practices to qualify for certification. ASTM A967-99e1 gives the purchaser a wide choice of pre-treatments, passivation treatments, post-treatments, and testing methods. ASTM A967-99e1 PASSIVATION Federal Specification QQ-P-35C "Passivation Treatments for Corrosion Resistant Steel" has been cancelled. This federal specification is superseded by ASTM A967-99E1. "Standard Specification for Chemical Passivation Treatments for Stainless Parts", revised January 2000, and adopted by the Department of Defense. Under this new specification, electro- polishing is recognized as one of the methods of providing passivation without further treatment. In addition to electro - polishing, various other methods. Such as immersion in nitric or citric acid based solutions are permissible.
	Specifications History
	QQ-P-35C ASTM A967-01e1 10-Oct-2001 Active Standard: A967-05 Active Standard A380-06 Standard Practice for Cleaning, Decaling, and Passivation of Stainless Steel Parts& equipments

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PASSIVATION

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