This specification makes no recommendations regarding the suitability of any grade, treatment, or acceptance criteria for any particular application or class of applications. 1.4 The tests in this specification are intended to confirm the effectiveness of passivation, particularly with regard to the removal of free iron and other exogenous matter.
Scope. 1.1 This specification covers several different types of chemical passivation treatments for stainless steel parts. It includes recommendations and precautions for descaling, cleaning, and passivation of stainless steel parts. It includes several alternative tests, with acceptance criteria, for confirmation of effectiveness of such
ASTM A967. Request A Quote. Delstar Metal Finishing offers passivation servicesthat meet the ASTM (American Society for Testing and Materials) A 967 standards. The ASTM A967 standards help ensure quality passivation services using nitric acid immersion, citric acid immersion and electrochemical treatments.
Chemical Passivation Treatments for Stainless Steel Parts1. This standard is issued under the fixed designation A967/A967M; the number immediately following the designation indicates the year. of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A 967 2 3. Terminology 3.1 Definition of Term Specific to This Standard—It is necessary to define which of the several commonly used definitions of the term passivation will be used in this specification.(See Discussion.) 3.1.1 Discussion—Stainless steels are autopassivating in the sense that the protective passive film is formed spontaneously