ISO 643:2012
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Steels — Micrographic determination of the apparent grain size
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English, French
10-12-2012
09-04-2025
ISO 643:2012 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 |
ISO/TC 17/SC 7
|
| DevelopmentNote |
DRAFT ISO/DIS 643 is also available for this standard. (06/2017)
|
| DocumentType |
Standard
|
| Pages |
35
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| PN EN ISO 643 : 2013 | Identical |
| NF EN ISO 643 : 2013 | Identical |
| I.S. EN ISO 643:2012 | Identical |
| GOST R ISO 643 : 2015 | Identical |
| DIN EN ISO 643:2015-06 (Draft) | Identical |
| NS EN ISO 643 : 2012 | Identical |
| NEN EN ISO 643 : 2013 | Identical |
| BS EN ISO 643:2012 | Identical |
| EN ISO 643:2012 | Identical |
| NBN EN ISO 643 : 2013 | Identical |
| SS-EN ISO 643:2013 | Identical |
| DS EN ISO 643 : 2013 | Identical |
| NFA 04 102 : 1980 | Similar to |
| UNE-EN ISO 643:2013 | Identical |
| BS 4490:1989 | Similar to |
| UNE 7280:1972 | Identical |
| BIS IS 4748 : 2009 | Identical |
| DIN 50601:1985-08 | Corresponds |
A newer version of this standard is available.
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