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ISO 4969:2015

Steel — Etching method for macroscopic examination

Jun 19, 2015

General information

90.93     Mar 9, 2026

ISO

ISO/TC 17/SC 7

International Standard

77.040.99  

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Scope

ISO 4969:2015 establishes guidelines for the macroscopic examination of steel by hot etching, room temperature etching and electrolytic etching.
The method has very wide application. Selection of the type, concentration and temperature of the reagent, the etching apparatus and the conditions of surface preparation of the test piece make it possible to achieve the required aim.
NOTE It might be difficult to see fine voids and cracks and discriminate between them and determine their nature by macroetching.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 4969:1980

NOW

PUBLISHED
ISO 4969:2015
90.93 Standard confirmed
Mar 9, 2026