prEN ISO 4969
Steel - Etching method for macroscopic examination (ISO 4969:2015)
Draft Public enquiry
Comment end date
2027-01-10
Export comments
Project stage codes
1. Decision on WI Proposal
2. Projektas
3. Viešoji apklausa
From 2026-11-03
till 2027-01-10
4. Closure of enquiry
5. Submission to Formal Vote
Organisation
CEN Europos standartizacijos komitetasICS
77.040.99 - Other methods of testing of metalsTechnical Committee
TK 49 Metallic materialsForeignTC'S
CEN/TC 459/SC 1Number of comments
0Comment start date
2026-11-03Scope
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.