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EN ISO 643:2024

Current

Current

The latest, up-to-date edition.

Steels - Micrographic determination of the apparent grain size (ISO 643:2024)

Published date

04-09-2024

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This document specifies micrographic methods of determining apparent ferritic or austenitic grain size in steels. It describes the methods of revealing grain boundaries and of estimating the mean grain size of specimens with unimodal size distribution. Although grains are three-dimensional in shape, the metallographic sectioning plane can cut through a grain at any point from a grain corner, to the maximum diameter of the grain, thus producing a range of apparent grain sizes on the two-dimensional plane, even in a sample with a perfectly consistent grain size.

DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

Standards Relationship
DS/EN ISO 643:2024 Identical
NS-EN ISO 643:2024 Identical

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