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EN ISO 643:2020

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Steels - Micrographic determination of the apparent grain size (ISO 643:2019, Corrected version 2023-11)

Withdrawn date

31-07-2020

Published date

15-01-2020

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.

Committee
CEN/TC 459/SC 1
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Withdrawn
Supersedes

ASD-STAN prEN 4500-004 P3:2023 Aerospace series Metallic materials — Rules for drafting and presentation of material standards — Part 004: Specific rules for titanium and titanium alloys

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