ASTM B 912 Standard Specification for Passivation of Stainless Steels Using Electropolishing
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ASTM B 912 Document Information:
Title
Standard Specification for Passivation of Stainless Steels Using Electropolishing
ASTM International
Publication Date:
Sep 10, 2002
Scope:
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.
The values stated in SI units are to be regarded as standard. No
other units of measurement are included in this standard.
This specification may involve hazardous materials,
operations, and equipment. This specification does not purport to
address all of the safety concerns, if any, associated with its
use. It is the responsibility of the user of this standard to
establish appropriate safety and health practices and determine the
applicability of regulatory limitations prior to use.
Keywords:
- electropolishing
- passivation
- stainless steel
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