International Standard
ISO 643:2019
Steels — Micrographic determination of the apparent grain size
Reference number
ISO 643:2019
Edición 4
2019-12
International Standard
Vista previa
ISO 643:2019
72193
No disponible en español
Publicado (Edición 4, 2019)

ISO 643:2019

ISO 643:2019
72193
Idioma
Formato
CHF 129
Convertir Franco suizo (CHF) a tu moneda

Resumen

This document 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.

Informaciones generales

  •  : Publicado
     : 2019-12
     : 2023-11
    : Norma Internacional para revisar [90.92]
  •  : 4
     : 21
  • ISO/TC 17/SC 7
    77.040.99 
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