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ISO 643:2019

Steels — Micrographic determination of the apparent grain size
12. 12. 2019.
95.99   Povučen   22. 8. 2024.

Опште информације

95.99     22. 8. 2024.

ISO

ISO/TC 17/SC 7

Međunarodni standard

77.040.99  

engleski  

Kupovina

Povučen

Jezik na kome želite da primite dokument.

Apstrakt

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.

Životni ciklus

PRETHODNO

POVUČEN
ISO 643:2012

TRENUTNO

POVUČEN
ISO 643:2019
95.99 Povučen
22. 8. 2024.

REVIDIRAN OD

OBJAVLJEN
ISO 643:2024

Nacionalna preuzimanja

SRPS EN ISO 643:2020  
ISS

Čelici - Mikroskopsko određivanje prividne veličine zrna

95.99   Povučen

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