ISO 643:2024

Steels — Micrographic determination of the apparent grain size

Datum objavljivanja: 22. 8. 2024.

Опште информације

Trenutna faza: 60.60 Effective date: 22. 8. 2024.

Inicijator: ISO

Pripada: ISO/TC 17/SC 7

Vrsta: Međunarodni standard

ICS: 77.040.99

Jezik: engleski francuski

Kupovina

Status: Objavljen

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Apstrakt

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.

Životni ciklus

PRETHODNO

POVUČEN
ISO 643:2019

TRENUTNO

OBJAVLJEN
ISO 643:2024
60.60 Standard objavljen
22. 8. 2024.

Nacionalna preuzimanja

SRPS EN ISO 643:2024

ISS

Čelici – Mikroskopsko određivanje prividne veličine zrna

60.60 Standard objavljen

C164 Saznaj više