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ISO/NP 26589

Metallic and other inorganic coatings — Ferroin method for testing passive film integrity of stainless steel

General information

10.20     Mar 30, 2026

ISO

ISO/TC 107/SC 7

International Standard

Scope

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.

Life cycle

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IN_DEVELOPMENT
ISO/NP 26589
10.20 New project ballot initiated
Mar 30, 2026