EN ISO 643:2003

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

ISO 643 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.

Stahl - Mikrophotographische Bestimmung der scheinbaren Korngröße (ISO 643:2003)

Diese Internationale Norm legt mikrophotographische Verfahren zur Bestimmung der scheinbaren Ferrit  oder Austenitkorngröße von Stählen fest. Es werden Verfahren zum Sichtbarmachen der Korngrenzen und zur Schätzung der mittleren Korngröße von Proben mit einer gleichmäßigen Größenverteilung beschrieben. Obwohl die Körner dreidimensional sind, können sie durch eine metallographische Schnittebene von einem beliebigen Punkt am Rand eines Korns bis einschließlich durch seinen maximalen Durchmesser so durchschnitten werden, dass auch in einer Probe mit vollständig übereinstimmender Korngröße in der zweidimensionalen Ebene eine scheinbare Korngröße erzeugt wird.

Aciers - Détermination micrographique de la grosseur de grain apparente (ISO 643:2003)

L'ISO 643:2003 spécifie une méthode de détermination micrographique de la grosseur apparente du grain ferritique ou austénitique des aciers. Elle précise les méthodes de mise en évidence des joints de grains et d'estimation de la grosseur moyenne de grain d'un échantillon ayant une distribution granulométrique unimodale.
Bien que les grains soient de forme tridimensionnelle, le plan de la préparation métallographique peut couper un grain en tout point, passant par un coin du grain ou au travers du diamètre maximal du grain ou entre les deux, produisant de ce fait une gamme de grosseurs de grain apparentes sur le plan bidimensionnel, même dans le cas d'un échantillon présentant une grosseur de grain parfaitement cohérente.

Jekla - Mikrografsko določevanje navidezne velikosti kristalnih zrn (ISO 643:2003)

General Information

• Status: Withdrawn
• Publication Date: 14-Feb-2003
• Withdrawal Date: 18-Dec-2012
• ICS: 77.040.99 - Other methods of testing of metals
• Technical Committee: ECISS/TC 101 - Test methods for steel (other than chemical analysis)
• Drafting Committee: ECISS/TC 2 - Steel - Physico-chemical and non-destructive testing
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 19-Dec-2012
• Completion Date: 19-Dec-2012
• Ref Project: SIST EN ISO 643:2004 - Steels - Micrographic determination of the apparent grain size (ISO 643:2003)

Relations

• Replaced By: EN ISO 643:2012 - Steels - Micrographic determination of the apparent grain size (ISO 643:2012)
• Effective Date: 14-Mar-2012

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 643:2004
01-marec-2004
-HNOD0LNURJUDIVNRGRORþHYDQMHQDYLGH]QHYHOLNRVWLNULVWDOQLK]UQ,62
Steels - Micrographic determination of the apparent grain size (ISO 643:2003)
Stahl - Mikrophotographische Bestimmung der scheinbaren Korngröße (ISO 643:2003)
Aciers - Détermination micrographique de la grosseur de grain apparente (ISO
643:2003)
Ta slovenski standard je istoveten z: EN ISO 643:2003
ICS:
77.040.99 Druge metode za Other methods of testing of
preskušanje kovin metals
77.080.20 Jekla Steels
SIST EN ISO 643:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 643:2004

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SIST EN ISO 643:2004
EUROPEAN STANDARD
EN ISO 643
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2003
ICS 77.040.99
English version
Steels - Micrographic determination of the apparent grain size
(ISO 643:2003)
Aciers - Détermination micrographique de la grosseur de Stahl - Mikrophotographische Bestimmung der scheinbaren
grain apparente (ISO 643:2003) Korngröße (ISO 643:2003)
This European Standard was approved by CEN on 21 January 2003.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spain, Sweden, Switzerland and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 643:2003 E
worldwide for CEN national Members.

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SIST EN ISO 643:2004
EN ISO 643:2003 (E)
CORRECTED  2003-04-30
Foreword
This document (EN ISO 643:2003) has been prepared by Technical Committee ISO/TC 17
"Steel" in collaboration with Technical Committee ECISS/TC 2 "Steel - Physico-chemical and
non-destructive testing", the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by August 2003, and conflicting national
standards shall be withdrawn at the latest by August 2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 643:2003 has been approved by CEN as EN ISO 643:2003 without any
modifications.
NOTE Normative references to International Standards are listed in Annex ZA (normative).
2

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SIST EN ISO 643:2004
EN ISO 643:2003 (E)
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated
by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 3785 1976 Steel - Designation of test piece axes EN ISO 3785 1995
3

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SIST EN ISO 643:2004

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SIST EN ISO 643:2004


INTERNATIONAL ISO
STANDARD 643
Second edition
2003-02-15


Steels — Micrographic determination of
the apparent grain size
Aciers — Détermination micrographique de la grosseur de grain
app
...