EN ISO 16859-2:2015

SLOVENSKI STANDARD
01-januar-2016
Kovinski materiali - Preskus trdote po Leebu - 2. del: Preverjanje in umerjanje
naprav za preskušanje (ISO 16859-2:2015)
Metallic materials - Leeb hardness test - Part 2: Verification and calibration of the testing
devices (ISO 16859-2:2015)
Metallische Werkstoffe - Härteprüfung nach Leeb - Teil 2: Prüfung und Kalibrierung der
Härteprüfgeräte (ISO 16859-2:2015)
Matériaux métalliques - Essai de dureté Leeb - Partie 2: Vérification et étalonnage des
appareils d'essai (ISO 16859-2:2015)
Ta slovenski standard je istoveten z: EN ISO 16859-2:2015
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 16859-2
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2015
EUROPÄISCHE NORM
ICS 77.040.10
English Version
Metallic materials - Leeb hardness test - Part 2:
Verification and calibration of the testing devices (ISO
16859-2:2015)
Matériaux métalliques - Essai de dureté Leeb - Partie 2 Metallische Werkstoffe - Härteprüfung nach Leeb - Teil
: Vérification et étalonnage des appareils d'essai (ISO 2: Überprüfung und Kalibrierung der Härteprüfgeräte
16859-2:2015) (ISO 16859-2:2015)
This European Standard was approved by CEN on 10 July 2015.

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, 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: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16859-2:2015 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
European foreword
This document (EN ISO 16859-2:2015) 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 April 2016, and conflicting national standards shall be
withdrawn at the latest by April 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 16859-2:2015 has been approved by CEN as EN ISO 16859-2:2015 without any
modification.
INTERNATIONAL ISO
STANDARD 16859-2
First edition
2015-09-15
Metallic materials — Leeb hardness
test —
Part 2:
Verification and calibration of the
testing devices
Matériaux métalliques — Essai de dureté Leeb —
Partie 2: Vérification et étalonnage des dispositifs d’essai
Reference number
ISO 16859-2:2015(E)
©
ISO 2015
ISO 16859-2:2015(E)
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2015 – All rights reserved

ISO 16859-2:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 General conditions . 1
4 Direct verification . 1
4.1 General . 1
4.2 Calibration parameters . 2
4.3 Verification of mass and geometry of impact body . 3
4.4 Verification of geometry and hardness of indenter ball . 3
4.5 Verification of geometry of support ring . 3
4.6 Verification of impact velocity . 3
4.7 Indirect verification of instrument . 4
5 Indirect verification . 4
5.1 General . 4
5.2 Procedure . 4
5.3 Variation coefficient (V) . 5
5.4 Error of test instrument . 5
5.5 Measurement uncertainty . 6
6 Intervals between verifications . 6
7 Verification report/calibration certificate . 7
Annex A (informative) Measurement uncertainty of calibration results of Leeb hardness
testing instrument . 8
Annex B (informative) Direct verification of single coil instrument .11
Bibliography .12
ISO 16859-2:2015(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 meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary Information
The committee responsible for this document is ISO/TC 164, Mechanical testing of metals, Subcommittee
SC 3, Hardness testing.
ISO 16859 consists of the following parts, under the general title Metallic materials — Leeb hardness test:
— Part 1: Test method
— Part 2: Verification and calibration of the testing devices
— Part 3: Calibration of reference test blocks
iv © ISO 2015 – All rights reserved

INTERNATIONAL STANDARD ISO 16859-2:2015(E)
Metallic materials — Leeb hardness test —
Part 2:
Verification and calibration of the testing devices
1 Scope
This part of ISO 16859 specifies methods for direct and indirect verification of test instruments used
for determining Leeb hardness in accordance with ISO 16859-1, and also describes when these two
types of verification are to be performed.
The direct verification involves checking that individual instrument performance parameters fall
within specified limits, whereas the indirect verification utilizes hardness measurements of reference
test blocks, calibrated in accordance with ISO 16859-3, to check the overall performance of the
instrument for testing in the direction of gravity. The indirect method can be used on its own for the
periodic performance checking in service.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 16859-1, Metallic materials — Leeb hardness test — Part 1: Test method
ISO 16859-3, Metallic materials — Leeb hardness test — Part 3: Calibration of reference test blocks
ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method
3 General conditions
Before a Leeb hardness testing instrument is verified, the instrument shall be checked to ensure that it
is properly set up and operating in accordance with the manufacturer’s instructions.
Especially it should be checked that
a) the impact body is correctly installed in the guide tube
...