SS-EN-ISO-643 › Steels - Micrographic determination of the apparent grain size (ISO 643:2019)
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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.
To find similar documents by classification:
77.040.99 (Other methods of testing of metals)
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Designation Name
SS-EN ISO 643:2020
Revision Level
2020 EDITION
Status
Current
Publication Date
Jan. 20, 2020
Language(s)
English
Page Count
32
International Equivalent
EN ISO 643:2020(IDT); ISO 643:2019(IDT)