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ISO/FDIS 4967

Steel — Determination of the non-metallic inclusion content — Micrographic method

General information

50.20     Feb 4, 2026

ISO

ISO/TC 17/SC 7

International Standard

77.040.99  

Scope

ISO 4967:2013 specifies a micrographic method of determining the non-metallic inclusions in rolled or forged steel products having a reduction ratio of at least 3 using standard diagrams. This method is widely used to assess the suitability of a steel for a given use. However, since it is difficult to achieve reproducible results owing to the influence of the test operator, even with a large number of specimens, precautions should be taken when using the method.
ISO 4967:2013 also provides for the determination of non-metallic inclusions by image analysis technologies.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 4967:2013

NOW

PROJECT
ISO/FDIS 4967
50.20 Proof sent to secretariat or FDIS ballot initiated: 8 weeks
Feb 4, 2026

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