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Steels - Micrographic determination of the apparent grain size (ISO 643:2003)
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This International Standard 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
Revision Level
EDITION 1
Status
Superseded
Publication Date
Nov. 7, 2003
Language(s)
English
Page Count
40
International Equivalent
ISO 643:2003 IDT* EN ISO 643:2003 IDT