SIST EN ISO 643:2020
(Main)Steels - Micrographic determination of the apparent grain size (ISO 643:2019, Corrected version 2020-03)
Steels - Micrographic determination of the apparent grain size (ISO 643:2019, Corrected version 2020-03)
EN-ISO 643 specifies a micrographic method of determining apparent ferritic oraustenitic grain size in steels. It describes the methods of revealing grainboundaries and of estimating the mean grain size of specimens with unimodal sizedistribution. Although grains are three-dimensional in shape, the metallographicsectioning plane can cut through a grain at any point from a grain corner, tothe maximum diameter of the grain, thus producing a range of apparent grainsizes on the two-dimensional plane, even in a sample with a perfectly consistentgrain size.
Stahl - Mikrophotographische Bestimmung der erkennbaren Korngröße (ISO 643:2019, korrigierte Fassung 2020-03)
Dieses Dokument legt mikrophotographische Verfahren zur Bestimmung der erkennbaren 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 an einem beliebigen Punkt am Rand eines Korns bis einschließlich durch seinen größten Durchmesser so durchschnitten werden, dass auch in einer Probe mit völlig konstanter Korngröße in der zweidimensionalen Ebene eine erkennbare Bandbreite von Korngrößen erzeugt wird.
Aciers - Détermination micrographique de la grosseur de grain apparente (ISO 643:2019, Version corrigée 2020-03)
La présente document spécifie une méthode de détermination micrographique de la grosseur apparente du grain ferritique ou austénitique des aciers. Elle décrit 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 643:2019, popravljena različica 2020-03)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 643:2020
01-april-2020
Jekla - Mikrografsko določevanje navidezne velikosti kristalnih zrn (ISO 643:2019)
Steels - Micrographic determination of the apparent grain size (ISO 643:2019)
Stahl - Mikrophotographische Bestimmung der erkennbaren Korngröße (ISO 643:2019)
Aciers - Détermination micrographique de la grosseur de grain apparente (ISO
643:2019)
Ta slovenski standard je istoveten z: EN ISO 643:2020
ICS:
77.040.99 Druge metode za Other methods of testing of
preskušanje kovin metals
77.080.20 Jekla Steels
SIST EN ISO 643:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 643:2020
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SIST EN ISO 643:2020
EN ISO 643
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2020
EUROPÄISCHE NORM
ICS 77.040.99 Supersedes EN ISO 643:2012
English Version
Steels - Micrographic determination of the apparent grain
size (ISO 643:2019)
Aciers - Détermination micrographique de la grosseur Stahl - Mikrophotographische Bestimmung der
de grain apparente (ISO 643:2019) erkennbaren Korngröße (ISO 643:2019)
This European Standard was approved by CEN on 26 October 2018.
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 CEN-CENELEC 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 CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 643:2020 E
worldwide for CEN national Members.
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SIST EN ISO 643:2020
EN ISO 643:2020 (E)
Contents Page
European foreword . 3
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SIST EN ISO 643:2020
EN ISO 643:2020 (E)
European foreword
This document (EN ISO 643:2020) has been prepared by Technical Committee ISO/TC 17 "Steel" in
collaboration with Technical Committee CEN/TC 459/SC 1 “Test methods for steel (other than chemical
analysis)” 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 July 2020, and conflicting national standards shall be
withdrawn at the latest by July 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 643:2012.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 643:2019 has been approved by CEN as EN ISO 643:2020 without any modification.
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SIST EN ISO 643:2020
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SIST EN ISO 643:2020
INTERNATIONAL ISO
STANDARD 643
Fourth edition
2019-12
Steels — Micrographic determination
of the apparent grain size
Aciers — Détermination micrographique de la grosseur de grain
apparente
Reference number
ISO 643:2019(E)
©
ISO 2019
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SIST EN ISO 643:2020
ISO 643:2019(
...
SLOVENSKI STANDARD
SIST EN ISO 643:2020
01-april-2020
Jekla - Mikrografsko določevanje navidezne velikosti kristalnih zrn (ISO 643:2019,
popravljena različica 2020-03)
Steels - Micrographic determination of the apparent grain size (ISO 643:2019, Corrected
version 2020-03)
Stahl - Mikrophotographische Bestimmung der erkennbaren Korngröße (ISO 643:2019,
korrigierte Fassung 2020-03)
Aciers - Détermination micrographique de la grosseur de grain apparente (ISO
643:2019, Version corrigée 2020-03)
Ta slovenski standard je istoveten z: EN ISO 643:2020
ICS:
77.040.99 Druge metode za Other methods of testing of
preskušanje kovin metals
77.080.20 Jekla Steels
SIST EN ISO 643:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 643:2020
---------------------- Page: 2 ----------------------
SIST EN ISO 643:2020
EN ISO 643
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2020
EUROPÄISCHE NORM
ICS 77.040.99 Supersedes EN ISO 643:2012
English Version
Steels - Micrographic determination of the apparent grain
size (ISO 643:2019, Corrected version 2020-03)
Aciers - Détermination micrographique de la grosseur Stahl - Mikrophotographische Bestimmung der
de grain apparente (ISO 643:2019, Version corrigée erkennbaren Korngröße (ISO 643:2019, korrigierte
2020-03) Fassung 2020-03)
This European Standard was approved by CEN on 26 October 2018.
This European Standard was corrected and reissued by the CEN-CENELEC Management Centre on 08 April 2020.
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 CEN-CENELEC 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 CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUN G
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 643:2020 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 643:2020
EN ISO 643:2020 (E)
Contents Page
European foreword . 3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 643:2020
EN ISO 643:2020 (E)
European foreword
This document (EN ISO 643:2020) has been prepared by Technical Committee ISO/TC 17 "Steel" in
collaboration with Technical Committee CEN/TC 459/SC 1 “Test methods for steel (other than chemical
analysis)” 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 July 2020, and conflicting national standards shall be
withdrawn at the latest by July 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 643:2012.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 643:2019, Corrected version 2020-03 has been approved by CEN as EN ISO 643:2020
without any modification.
3
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SIST EN ISO 643:2020
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...
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