SIST EN ISO 14627:2026

SLOVENSKI STANDARD
01-januar-2026
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Preskusna
metoda za odpornost proti lomu silicijevih nitridnih materialov za kroglice kotalnih
ležajev pri sobni temperaturi z metodo vtiska loma (IF) (ISO 14627:2012)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for
fracture resistance of silicon nitride materials for rolling bearing balls at room
temperature by indentation fracture (IF) method (ISO 14627:2012)
Hochleistungskeramik - Prüfverfahren für die Bestimmung der Bruchzähigkeit mit Hilfe
von Vickers-Härteeindrücken bei Raumtemperatur an Wälzlagerkugeln aus Siliziumnitrid
(ISO 14627:2012)
Céramiques techniques - Méthode d'essai de résistance à la rupture des matériaux
nitrure de silicium pour billes de roulement à billes à température ambiante par la
méthode de rupture par indentation (ISO 14627:2012)
Ta slovenski standard je istoveten z: EN ISO 14627:2025
ICS:
81.060.30 Sodobna keramika Advanced ceramics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 14627
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2025
EUROPÄISCHE NORM
ICS 81.060.30
English Version
Fine ceramics (advanced ceramics, advanced technical
ceramics) - Test method for fracture resistance of silicon
nitride materials for rolling bearing balls at room
temperature by indentation fracture (IF) method (ISO
14627:2012)
Céramiques techniques - Méthode d'essai de résistance Hochleistungskeramik - Prüfverfahren für die
à la rupture des matériaux nitrure de silicium pour Bestimmung der Bruchzähigkeit mit Hilfe von Vickers-
billes de roulement à billes à température ambiante Härteeindrücken bei Raumtemperatur an
par la méthode de rupture par indentation (ISO Wälzlagerkugeln aus Siliziumnitrid (ISO 14627:2012)
14627:2012)
This European Standard was approved by CEN on 24 November 2025.

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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14627:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 14627:2012 has been prepared by Technical Committee ISO/TC 206 "Fine ceramics” of
the International Organization for Standardization (ISO) and has been taken over as EN ISO 14627:2025
by Technical Committee CEN/TC 184 “Advanced technical ceramics” the secretariat of which is held by
DIN.
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 May 2026, and conflicting national standards shall be
withdrawn at the latest by May 2026.
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.
Any feedback and questions on this document should be directed to the users’ national standards body.
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 14627:2012 has been approved by CEN as EN ISO 14627:2025 without any modification.

INTERNATIONAL ISO
STANDARD 14627
First edition
2012-07-15
Fine ceramics (advanced ceramics,
advanced technical ceramics) — Test
method for fracture resistance of silicon
nitride materials for rolling bearing balls
at room temperature by indentation
fracture (IF) method
Céramiques techniques — Méthode d’essai de résistance à la rupture
des matériaux nitrure de silicium pour billes de roulement à billes à
température ambiante par la méthode de rupture par indentation
Reference number
ISO 14627:2012(E)
©
ISO 2012
ISO 14627:2012(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
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Published in Switzerland
ii © ISO 2012 – All rights reserved

ISO 14627:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
5.1 Testing machine . 2
5.2 Indenter . 2
5.3 Verification by standard reference materials . 3
6 Test specimens . 3
6.1 General . 3
6.2 Thickness . 3
6.3 Surface finish . 3
7 Procedure . 3
7.1 Specimen placement . 3
7.2 Specimen leveling . 3
7.3 Clean the indenter . 3
7.4 Application of test load . 3
7.5 Acceptability of indentations . 4
7.6 Number of indentations . 4
7.7 Measurement of indentation size . 5
7.8 Measurement of crack size . 5
8 Calculation . 5
9 Test report . 6
Bibliography . 8
ISO 14627:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 14627 was prepared by Technical Committee ISO/TC 206, Fine ceramics.
iv © ISO 2012 – All rights reserved

INTERNATIONAL STANDARD ISO 14627:2012(E)
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Test method for fracture resistance of silicon
nitride materials for rolling bearing balls at room temperature
by indentation fracture (IF) method
1 Scope
This International Standard describes a test method that covers the determination of fracture resistance of silicon
nitride bearing balls at room temperature by the indentation fracture (IF) method, as specified in ISO 26602.
This International Standard is intended for use with monolithic silicon nitride ceramics for bearing balls. It does
not include other ceramic materials.
This International Standard is for material comparison and quality assurance.
Indentation fracture resistance, K as defined in this International Standard is not to be equated to fracture
I, IFR
toughness determined using other test methods such as K and K .
Isc Ipb
NOTE K is an estim
...