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.

ASTM A967 defines seven tests for verification that a suitable passive surface has been formed on the component surface. These tests are all qualitative. Although some tests can more precisely detect the amount of free iron remaining on a surface, they are meant to serve as a go, no-go test for passivation. Water immersion test.

1 This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.14 on Methods of Corrosion Testing. Current edition approved July 1, 2017. Published July 2017. Originally approved in 1996. Last previous edition approved in 2013 as …

1 This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.14 on …

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The parts shall then be thoroughly dried. 10.3The purchaser may specify other post-cleaning treat-ments. 11.Finish 11.1The passivated parts shall exhibit a chemically clean surface …

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The parts shall then be thoroughly dried. 10.3The purchaser may specify other post-cleaning treat-ments. 11.Finish 11.1The passivated parts shall exhibit a chemically clean surface and shall,on visual inspection,show no etching, pitting,or frosting resulting from the passivation procedures. 12.Testing Agency 12.1When required,the purchaser

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ASTM A967/A957M-17. ： ASTM A967/A967M-17 ① Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts 1 ASTM . ASTM A967/A967M-17 ①

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ASTM A967-01E1. Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts. ASTM International / 10-Oct-2001 / 6 pages. REPLACED by ASTM A967-05. 1.1 This specification covers several different types of chemical passivation treatments for stainless steel parts. It includes recommendations …

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ASTM A967. 1.4.6 Practice F- Free Iron Test. 1.5 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information …

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ASTM A967-2001 . This standard is issued under the fixed designation A 967; 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 superscript

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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 …

Abstract This specification covers several different types of chemical passivation treatments for stainless steel parts. The treatments are the following: immersion treatment using nitric acid solutions, immersion treatment using citric acid solution, and electrochemical treatment.

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Abstract This specification covers several different types of chemical passivation treatments for stainless steel parts. The treatments are the following: immersion treatment using …

ASTM A967. 1.4.6 Practice F- Free Iron Test. 1.5 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only. 1.2 Practices for the mechanical and chemical treatments of stainless steel surfaces are discussed more thoroughly in Practice A 380.