NA 021
DIN Standards Committee Iron and Steel
Standards
[CURRENT]
ISO 643
ISO 643
Steels - Micrographic determination of the apparent grain size
Title (German)
Stahl - Mikrophotographische Bestimmung der erkennbaren Korngröße
Responsible national committee
NA 062-01-31 GA - Joint working committee NMP/FES: Metallographical test methods
Responsible international committee
ISO/TC 17/SC 7 - Methods of testing (other than mechanical tests and chemical analysis)