DIN EN ISO 643
Steels - Micrographic determination of the apparent grain size (ISO 643:2019, Corrected version 2020-03); German version EN ISO 643:2020
Stahl - Mikrophotographische Bestimmung der erkennbaren Korngröße (ISO 643:2019, korrigierte Fassung 2020-03); Deutsche Fassung ISO 643:2020
Document: references other documents
Responsible national committee
NA 062-01-31 GA - Joint working committee NMP/FES: Metallographical test methods
Responsible european committee
CEN/TC 459/SC 1 - Test methods for steel (other than chemical analysis)
Responsible international committee
ISO/TC 17/SC 7 - Methods of testing (other than mechanical tests and chemical analysis)