Active standard | Published: 01/04/2026

ASTM B912-26

Standard Specification for Passivation of Stainless Steels Using Electropolishing

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Detail information

Designation: ASTM B912-26

Publication date: 01/04/2026

Pages: 4

Country: American technical standard

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Anotation

This specification covers the passivation by electropolishing of stainless steel alloys in the 200, 300, and 400 series, as well as precipitation-hardened alloys. Basis materials shall be free of clearly visible defects, and if necessary, shall undergo preparatory cleaning procedures prior to electropolishing. Post-coating procedures such as post dip and final rinsing shall be performed as well. The performance of the specimens during passivation shall be evaluated by one or more of the following procedures: water immersion test; humidity test; salt spray test; copper sulfate test; and modified ferroxyl test for free iron.

Keywords:
electropolishing, passivation, stainless steel,, ICS Number Code 49.040 (Coatings and related processes used in aerospace industry)

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