EN ISO 14556:2023

SLOVENSKI STANDARD
01-oktober-2023
Kovinski materiali - Udarni preskus žilavosti po Charpyju (V-zareza) -
Instrumentirana preskusna metoda (ISO 14556:2023)
Metallic materials - Charpy V-notch pendulum impact test - Instrumented test method
(ISO/FDIS 14556:2023)
Metallische Werkstoffe - Kerbschlagbiegeversuch nach Charpy (V-Kerb) -
Instrumentiertes Prüfverfahren (ISO 14556:2023)
Matériaux métalliques - Essai de flexion par choc sur éprouvette Charpy à entaille en V -
Méthode d'essai instrumenté (ISO 14556:2023)
Ta slovenski standard je istoveten z: EN ISO 14556:2023
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 14556
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2023
EUROPÄISCHE NORM
ICS 77.040.10 Supersedes EN ISO 14556:2015
English Version
Metallic materials - Charpy V-notch pendulum impact test
- Instrumented test method (ISO 14556:2023)
Matériaux métalliques - Essai de flexion par choc sur Metallische Werkstoffe - Kerbschlagbiegeversuch nach
éprouvette Charpy à entaille en V - Méthode d'essai Charpy (V-Kerb) - Instrumentiertes Prüfverfahren (ISO
instrumenté (ISO 14556:2023) 14556:2023)
This European Standard was approved by CEN on 16 April 2023.

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, Türkiye 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14556:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 14556:2023) has been prepared by Technical Committee ISO/TC 164
"Mechanical testing of metals" 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 November 2023, and conflicting national standards
shall be withdrawn at the latest by November 2023.
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 14556:2015.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 14556:2023 has been approved by CEN as EN ISO 14556:2023 without any modification.

INTERNATIONAL ISO
STANDARD 14556
Third edition
2023-05
Metallic materials — Charpy
V-notch pendulum impact test —
Instrumented test method
Matériaux métalliques — Essai de flexion par choc sur éprouvette
Charpy à entaille en V — Méthode d'essai instrumenté
Reference number
ISO 14556:2023(E)
ISO 14556:2023(E)
© ISO 2023
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 below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 14556:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Characteristic values of force (see Figure 2) . 1
3.2 Characteristic values of displacement (see Figure 2) . 2
3.3 Characteristic values of impact energy . 2
4 Symbols and abbreviated terms.3
5 Principle . 3
6 Apparatus . 4
6.1 Testing machine . 4
6.2 Instrumentation and calibration . 4
6.2.1 Traceable measurement . 4
6.2.2 Force measurement . 4
6.2.3 Calibration . . . 5
6.2.4 Displacement measurement . 5
6.2.5 Recording apparatus . 6
6.2.6 Calibration interval . 6
7 Test piece . 6
8 Test procedure .6
9 Expression of results . 6
9.1 General . 6
9.2 Evaluation of the force-displacement curve . 7
9.3 Determination of the characteristic values of force . . 7
9.4 Determination of the characteristic values of displacement . 7
9.5 Determination of the characteristic values of impact energy . 9
10 Test report . 9
Annex A (informative) Examples of instrumented strikers .11
Annex B (informative) Example of support block for the calibration of a 2 mm striker .12
Annex C (informative) Formulae for the estimation of the proportion of ductile fracture
surface . .13
Annex D (normative) Instrumented Charpy V-notch pendulum impact testing of miniature
test pieces .14
Bibliography .19
iii
ISO 14556:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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electrotechnical standardization.
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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
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patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals,
Subcommittee SC 4, Fatigue, fracture and toughness testing, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 459/SC 1, Test methods for steel
(other tha
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