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Standards Development
This document specifies the ferroin method, conditions and procedures for testing passive film integrity of stainless steels, and provides guidance for the inspection
This standard is applicable to the testing of the passivation film quality of stainless steels, especially suitable for on-site evaluation of stainless steel equipments under installation and operation.
Passive film integrity particularly refers to the surface coverage and compactness of protective chromium-enriched oxide in the passive film. High degree of passive film integrity by cleaning and passivation processes, provides good corrosion resistance of stainless steels for usage by manufacturers of nuclear power plants, railway vehicles, medical equipment, chemical industries, et.al. The integrity inspection provides simple judgment on the quality of passive film. (Please use this field or attach an annex)
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