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Norm

ÖNORM EN ISO 643

Issue date: 2020 06 01

Steels - Micrographic determination of the apparent grain size (ISO 643:2019, Corrected version 2020-03)

This document specifies a micrographic method of determining apparent ferritic or austenitic grain size in steels. It describes the methods of revealing grain boundaries ...

Valid

Publisher:

Austrian Standards International

Format:

Digital | 29 Pages

Language:

German | English | Download GER/ENG

Optionally co-design standards:

Committee 021: Iron and steel

ICS

77.040.99

Topics

Mechanical engineering foundations & materials, Testing of metals, Other methods of testing of metals

This document 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.

ÖNORM EN ISO 643

2020 06 01

Steels - Micrographic determination of the apparent grain size (ISO 643:2019, Corrected version 2020...

Norm

↖

ÖNORM EN ISO 643

2013 06 01

Steels - Micrographic determination of the apparent grain size (ISO 643:2012)

Norm

ÖNORM EN ISO 643

2003 09 01

Steels - Micrographic determination of the apparent grain size (ISO 643:2003)