BS EN ISO 643:2020
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Steels. Micrographic determination of the apparent grain size
Hardcopy , PDF
06-09-2024
English
05-05-2020
Important note : Users cannot be edited or removed once added to your Multi user PDF.This document specifies a micrographic method of determining apparent ferritic or austenitic grain size in steels.
| Committee |
ISE/101/7
|
| DocumentType |
Standard
|
| ISBN |
9780580992902
|
| Pages |
28
|
| ProductNote |
Implementation of ISO corrigendum March 2020:Formula B.9 corrected
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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.
| Standards | Relationship |
| EN ISO 643:2020 | Identical |
| ISO 643:2019 | Identical |
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