ISO 643:2019
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ISO 643:2019
72193
No disponible en español

Estado : Publicado (Para revisar)

Esta norma será reemplazada por ISO/DIS 643
es
Formato Idioma
std 1 129 PDF + ePub
std 2 129 Papel
  • CHF129
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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.

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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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