Hardmetals - Metallographic determination of microstructure - Part 2: Measurement of WC grain size (ISO 4499-2:2020)

This document gives guidelines for the measurement of hardmetal grain size by metallographic techniques only using optical or electron microscopy. It is intended for WC/Co hardmetals (also called cemented carbides or cermets) containing primarily tungsten carbide (WC[1]) as the hard phase. It is also intended for measuring the grain size and distribution by the linear-intercept technique.
This document essentially covers four main topics:
—     calibration of microscopes, to underpin the accuracy of measurements;
—     linear analysis techniques, to acquire sufficient statistically meaningful data;
—     analysis methods, to calculate representative average values;
—     reporting, to comply with modern quality requirements.
This document is supported by a measurement case study to illustrate the recommended techniques (see Annex A).
This document is not intended for the following:
—     measurements of size distribution;
—     recommendations on shape measurements. Further research is needed before recommendations for shape measurement can be given.
Measurements of coercivity are sometimes used for grain-size measurement, however, this document is concerned only with a metallographic measurement method. It is also written for hardmetals and not for characterizing powders. However, the method can, in principle, be used for measuring the average size of powders that are suitably mounted and sectioned.
[1] DE: Wolframcarbid, EN: tungsten carbide.

Hartmetalle - Metallographische Bestimmung der Mikrostruktur - Teil 2: Messung der WC-Korngröße (ISO 4499-2:2020)

Dieses Dokument gibt Leitlinien für die Messung der Hartmetallkorngröße mittels metallographischer Verfahren ausschließlich unter Anwendung der Licht  oder Elektronenmikroskopie an. Es ist für WC/Co Hartmetalle (auch als Hartmetalle oder Cermets bezeichnet) vorgesehen, die hauptsächlich Wolframcarbid (WC ) als harte Phase haben. Er ist ebenfalls für die Messung der Korngröße und deren Verteilung mit dem Linienschnittverfahren vorgesehen.
Dieses Dokument behandelt im Wesentlichen vier Hauptthemen:
- Kalibrierung von Mikroskopen, um die Genauigkeit der Messungen zu untermauern;
- lineare Analysenverfahren, um ausreichend statistisch aussagekräftige Daten zu erhalten;
- Analysenverfahren zur Berechnung repräsentativer Mittelwerte;
- Berichterstattung, um den modernen Qualitätsanforderungen zu entsprechen.
Dieses Dokument wird durch eine Messfallstudie zur Veranschaulichung der empfohlenen Verfahren unterstützt (siehe Anhang A).
Dieses Dokument ist nicht für Folgendes vorgesehen:
- Messungen von Korngrößenverteilung;
- Empfehlungen für Formmessungen. Weitere Untersuchungen sind erforderlich, bevor Empfehlungen für Formmessung gegeben werden können.
Zur Messung der Korngröße werden mitunter Messungen von Koerzitiv-Feldstärke herangezogen, dieses Dokument befasst sich jedoch ausschließlich mit einem metallographischen Messverfahren. Darüber hinaus ist es für Hartmetalle und nicht zur Charakterisierung von Pulvern vorgesehen. Das Verfahren kann jedoch grundsätzlich zur Messung der mittleren Korngröße von Pulvern, die in geeigneter Weise eingebettet und geteilt sind, herangezogen werden.

Métaux-durs - Détermination métallographique de la microstructure - Partie 2: Mesurage de la taille des grains de WC (ISO 4499-2:2020)

Le présent document donne des lignes directrices relatives au mesurage de la taille des grains de métaux-durs selon des techniques métallographiques utilisant uniquement un microscope optique ou électronique. Il est destiné aux métaux-durs WC/Co (également appelés carbures cémentés ou cermets) contenant principalement du carbure de tungstène (WC[1]) sous la forme d'une phase dure. Il est également destiné au mesurage de la taille des grains et de la distribution au moyen de la technique d'interception linéaire.
Le présent document couvre essentiellement quatre sujets principaux :
—          étalonnage de microscopes, pour appuyer la précision des mesures ;
—          techniques d'analyses linéaires, pour obtenir suffisamment de données statistiquement significatives ;
—          méthodes d'analyse, pour calculer des valeurs moyennes représentatives ;
—          rapports, pour répondre aux exigences modernes de qualité.
Le présent document est étayé par une étude de cas de mesurage destinée à illustrer les techniques recommandées (voir Annexe A).
Le présent document ne traite pas les points suivants :
—          mesurage de la distribution de la taille ;
—          recommandations sur les mesurages de forme. De plus amples recherches sont nécessaires avant de pouvoir établir des recommandations relatives au mesurage de forme.
Des mesurages de coercivité servent parfois au mesurage de la taille des grains, toutefois le présent document ne traite que de la méthode de mesurage métallographique. Il est également rédigé pour les métaux durs et non pour les poudres caractérisantes. Toutefois, la méthode peut, en principe, servir au mesurage de la granulométrie moyenne de poudres convenablement montées et sectionnées.
[1] ALL : Wolframcarbid, AN : tungsten carbide.

Trdine - Metalografsko določevanje mikrostrukture - 2. del: Merjenje velikosti zrn volframovega karbida (WC) (ISO 4499-2:2020)

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Status
Published
Publication Date
04-Aug-2020
Withdrawal Date
27-Feb-2021
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
05-Aug-2020
Completion Date
05-Aug-2020

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 4499-2:2020
01-oktober-2020
Nadomešča:
SIST EN ISO 4499-2:2010
Trdine - Metalografsko določevanje mikrostrukture - 2. del: Merjenje velikosti zrn
volframovega karbida (WC) (ISO 4499-2:2020)
Hardmetals - Metallographic determination of microstructure - Part 2: Measurement of
WC grain size (ISO 4499-2:2020)
Hartmetalle - Metallographische Bestimmung der Mikrostruktur - Teil 2: Messung der WC
Korngröße (ISO 4499-2:2020)
Métaux-durs - Détermination métallographique de la microstructure - Partie 2: Mesurage
de la taille des grains de WC (ISO 4499-2:2020)
Ta slovenski standard je istoveten z: EN ISO 4499-2:2020
ICS:
77.040.99 Druge metode za Other methods of testing of
preskušanje kovin metals
77.160 Metalurgija prahov Powder metallurgy
SIST EN ISO 4499-2:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 4499-2:2020

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SIST EN ISO 4499-2:2020


EN ISO 4499-2
EUROPEAN STANDARD

NORME EUROPÉENNE

August 2020
EUROPÄISCHE NORM
ICS 77.040.99; 77.160 Supersedes EN ISO 4499-2:2010
English Version

Hardmetals - Metallographic determination of
microstructure - Part 2: Measurement of WC grain size
(ISO 4499-2:2020)
Métaux-durs - Détermination métallographique de la Hartmetalle - Metallographische Bestimmung der
microstructure - Partie 2: Mesurage de la taille des Mikrostruktur - Teil 2: Messung der WC Korngröße
grains de WC (ISO 4499-2:2020) (ISO 4499-2:2020)
This European Standard was approved by CEN on 1 August 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 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 4499-2:2020 E
worldwide for CEN national Members.

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SIST EN ISO 4499-2:2020
EN ISO 4499-2:2020 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 4499-2:2020
EN ISO 4499-2:2020 (E)
European foreword
This document (EN ISO 4499-2:2020) has been prepared by Technical Committee ISO/TC 119 "Powder
metallurgy" in collaboration with Technical Committee CEN/SS M11 “Powder metallurgy” the
secretariat of which is held by CCMC.
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 February 2021, and conflicting national standards
shall be withdrawn at the latest by February 2021.
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 4499-2:2010.
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 4499-2:2020 has been approved by CEN as EN ISO 4499-2:2020 without any
modification.

3

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SIST EN ISO 4499-2:2020

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...

SLOVENSKI STANDARD
oSIST prEN ISO 4499-2:2018
01-september-2018
7UGLQH0HWDORJUDIVNRGRORþHYDQMHPLNURVWUXNWXUHGHO0HUMHQMHYHOLNRVWL]UQ
YROIUDPRYHJDNDUELGD :&  ,62',6
Hardmetals - Metallographic determination of microstructure - Part 2: Measurement of
WC grain size (ISO/DIS 4499-2:2018)
Hartmetalle - Metallographische Bestimmung der Mikrostruktur - Teil 2: Messung der WC
Korngröße (ISO/DIS 4499-2:2018)
Métaux-durs - Détermination métallographique de la microstructure - Partie 2: Mesurage
de la taille des grains de WC (ISO/DIS 4499-2:2018)
Ta slovenski standard je istoveten z: prEN ISO 4499-2
ICS:
77.040.99 Druge metode za Other methods of testing of
preskušanje kovin metals
77.160 Metalurgija prahov Powder metallurgy
oSIST prEN ISO 4499-2:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 4499-2:2018

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oSIST prEN ISO 4499-2:2018
DRAFT INTERNATIONAL STANDARD
ISO/DIS 4499-2
ISO/TC 119/SC 4 Secretariat: DIN
Voting begins on: Voting terminates on:
2018-06-21 2018-09-13
Hardmetals — Metallographic determination of
microstructure —
Part 2:
Measurement of WC grain size
Métaux-durs — Détermination métallographique de la microstructure —
Partie 2: Mesurage de la taille des grains de WC
ICS: 77.160; 77.040.99
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 4499-2:2018(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2018

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oSIST prEN ISO 4499-2:2018
ISO/DIS 4499-2:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
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Published in Switzerland
ii © ISO 2018 – All rights reserved

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oSIST prEN ISO 4499-2:2018
ISO/DIS 4499-2:2018(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, abbreviations, symbols and units . 2
3.1 General . 2
3.2 Terms and definitions . 2
3.3 Symbols, abbreviations and units . 3
4 General information . 4
5 Apparatus .
...

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