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Normas DIN – AENOR
DIN EN ISO 643:2015-06

DIN EN ISO 643:2015-06

Steel - Micrographic determination of the apparent grain size (ISO/FDIS 643:2015); German and English version FprEN ISO 643:2015 / Note: Date of issue 2015-05-08

Acier - Détermination micrographique de la grosseur de grain apparente (ISO/FDIS 643:2015); Version allemande et anglaise FprEN ISO 643:2015 / Attention: Date de parution 2015-05-08

Stahl - Mikrophotographische Bestimmung der erkennbaren Korngröße (ISO/FDIS 643:2015); Deutsche und Englische Fassung FprEN ISO 643:2015 / Achtung: Erscheinungsdatum 2015-05-08

Fecha Anulación:
2017-09 /Withdrawn
Equivalencias internacionales:

FprEN ISO 643 (2015-04)

ISO/FDIS 643 (2015-04)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 643:2017-09

This International Standard specifies a micrographic method 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.
Austenite, Austenitic, Definitions, Determination, Ferritic, Grain size, Micrographics, Steels, Testing
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