1Key Takeaways
1.1 This specification covers the passivation of stainless-steel alloys in the 200 (UNS2XXXX), 300 (UNS3XXXX), and 400 (UNS4XXXX) series, and the precipitation-hardened alloys, using electropolishing procedures.
NOTE 1:
Surface passivation occurs simultaneously with electropolishing under proper operating conditions. …
2Scope / Description
1.1 This specification covers the passivation of stainless-steel alloys in the 200 (UNS2XXXX), 300 (UNS3XXXX), and 400 (UNS4XXXX) series, and the precipitation-hardened alloys, using electropolishing procedures.
NOTE 1:
Surface passivation occurs simultaneously with electropolishing under proper operating conditions. The quality of passivation will depend on the type of stainless steel, the formulation of the electropolishing solution, and the conditions of operation. Free iron on the surface of the stainless steel is removed resulting in improved corrosion resistance. Surface smoothing obtained by electropolishing will also improve corrosion resistance. Electropolishing will also remove heat tint and oxide scale.
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6Frequently Asked Questions
What is ASTM B912-26?
ASTM B912-26 — Standard Specification for Passivation of Stainless Steels Using Electropolishing is an international standard developed by American Society for Testing and Materials (ASTM). 1.1 This specification covers the passivation of stainless-steel alloys in the 200 (UNS2XXXX), 300 (UNS3XXXX), and 400 (UNS4XXXX) series, and the precipitation-hardened alloys, using electropolishing procedures. NOTE 1: Surface passivation occurs...
What does ASTM B912-26 cover?
This standard covers: 1.1 This specification covers the passivation of stainless-steel alloys in the 200 (UNS2XXXX), 300 (UNS3XXXX), and 400 (UNS4XXXX) series, and the precipitation-hardened alloys, using electropolishing procedures. NOTE 1: Surface passivation occurs simultaneously with electropolishing under proper...
Who should use this standard?
This standard is intended for organizations, professionals, and stakeholders involved in various industries and sectors. It is applicable to manufacturers, service providers, regulatory bodies, and certification organizations.
What is the latest version of ASTM B912-26?
The current published version is ASTM B912-26, published on 2026-04-01. Always check for amendments or pending revisions.
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