Resumen
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.
Informaciones generales
-
Estado: RetiradaFecha de publicación: 2012-12Etapa: Retirada de la Norma Internacional [95.99]
-
Edición: 3Número de páginas: 35
-
Comité Técnico :ISO/TC 17/SC 7ICS :77.040.99
- RSS actualizaciones
Ciclo de vida
-
Anteriormente
RetiradaISO 643:2003
-
Ahora
-
Revisada por
PublicadoISO 643:2019
Got a question?
Check out our FAQs
Customer care
+41 22 749 08 88
Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)