Withdrawn
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.
WITHDRAWN
SRPS EN ISO 643:2014
WITHDRAWN
SRPS EN ISO 643:2020
95.99
Withdrawal of Standard
Sep 30, 2024
PUBLISHED
SRPS EN ISO 643:2024