EN ISO 6506-2:2018

SLOVENSKI STANDARD
01-marec-2019
1DGRPHãþD
SIST EN ISO 6506-2:2014
Kovinski materiali - Preskus trdote po Brinellu - 2. del: Preverjanje in umerjanje
naprav za preskušanje (ISO 6506-2:2017)
Metallic materials - Brinell hardness test - Part 2: Verification and calibration of testing
machines (ISO 6506-2:2017)
Metallische Werkstoffe - Härteprüfung nach Brinell - Teil 2: Überprüfung und Kalibrierung
der Prüfmaschinen (ISO 6506-2:2017)
Matériaux métalliques - Essai de dureté Brinell - Partie 2: Vérification et étalonnage des
machines d_essai (ISO 6506-2:2017)
Ta slovenski standard je istoveten z: EN ISO 6506-2:2018
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 6506-2
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2018
EUROPÄISCHE NORM
ICS 77.040.10 Supersedes EN ISO 6506-2:2014
English Version
Metallic materials - Brinell hardness test - Part 2:
Verification and calibration of testing machines (ISO 6506-
2:2017)
Matériaux métalliques - Essai de dureté Brinell - Partie Metallische Werkstoffe - Härteprüfung nach Brinell -
2: Vérification et étalonnage des machines d'essai (ISO Teil 2: Überprüfung und Kalibrierung der
6506-2:2017) Prüfmaschinen (ISO 6506-2:2017)
This European Standard was approved by CEN on 10 December 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6506-2:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 6506-2:2018) has been prepared by Technical Committee ISO/TC 164
"Mechanical testing of metals" in collaboration with Technical Committee ECISS/TC 101 “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 June 2019, and conflicting national standards shall be
withdrawn at the latest by June 2019.
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 6506-2:2014.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 6506-2:2017 has been approved by CEN as EN ISO 6506-2:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 6506-2
Fourth edition
2017-10
Metallic materials — Brinell
hardness test —
Part 2:
Verification and calibration of testing
machines
Matériaux métalliques — Essai de dureté Brinell —
Partie 2: Vérification et étalonnage des machines d'essai
Reference number
ISO 6506-2:2017(E)
©
ISO 2017
ISO 6506-2:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

ISO 6506-2:2017(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General conditions . 1
5 Direct verification . 2
5.1 General . 2
5.2 Measurement of the test forces . 2
5.3 Measurement of the properties of the indenter ball . 3
5.4 Calibration of the indentation diameter measuring system . 3
5.5 Verification of the testing cycle . 4
6 Indirect verification . 4
7 Intervals between verifications . 6
8 Verification report/calibration certificate . 6
Annex A (informative) Uncertainty of measurement of the verification results of the
hardness testing machine . 8
Annex B (normative) Verification of hardness testing machines that are incapable of
meeting the specified force/time profile .15
Bibliography .16
ISO 6506-2:2017(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.
The procedures used to develop this document and those intended for its further maintenance are
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
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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. 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).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals,
Subcommittee SC 3, Hardness testing.
This fourth edition cancels and replaces the third edition (ISO 6506-2:2014), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— Clause 3 has been added;
— Table 3 has been modified.
A list of all parts in the ISO 6506 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved

INTERNATIONAL STANDARD ISO 6506-2:2017(E)
Metallic materials — Brinell hardness test —
Part 2:
Verification and calibration of testing machines
1 Scope
This document specifies methods of direct and indirect verification of testing machines used for
determining Brinell hardness in accordance with ISO 6506-1 and also specifies when these two types of
verification have to be performed.
The direct verification involves checking that individual machine performance parameters fall within
specified limits whereas the indirect verification utilizes hardness measurements of reference blocks,
calibrated in accordance with ISO 6506-3, to check the machine’s overall performance.
If a testing machine is also to be used for other methods of hardness testing, it has to be verified
independently for each method.
This document is applicable to both fixed location and portable hardness testing machines. For
machines that are incapable of satisfying the specified force-time profile, the direct verification of force
and testing cycle can be modified by the use of Annex B.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 376, Metallic materials — Calibration of force-proving instruments used for the verification of uniaxial
testing machines
ISO 6506-1:2014, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6506-3, Metallic materials — Brinell hardness test — Part 3: Calibration of reference blocks
ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
4 General conditions
Before a Brinell hardness testing machine is verified, the machine shall be checked to ensure that it is
properly set up in accordance with the manufacturer's instructions.
ISO 6506-2:2017(E)
Especially, it should be checked that:
a) the mount holding the ball-holder slides correctly in its guide;
b) every ball-holder with
...