Metallic materials - Leeb hardness test - Part 2: Verification and calibration of the testing devices (ISO 16859-2:2015)

ISO 16859-2:2015 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.

Metallische Werkstoffe - Härteprüfung nach Leeb - Teil 2: Überprüfung und Kalibrierung der Härteprüfgeräte (ISO 16859-2:2015)

Dieser Teil von ISO 16859 legt Verfahren für die direkte und indirekte Kalibrierung der zur Bestimmung der Leeb-Härte nach ISO/DIS 16859 1:2013 verwendeten Prüfgeräte fest und gibt auch an, wann diese beiden Arten der Kalibrierung durchzuführen sind.
Bei der direkten Kalibrierung wird überprüft, ob einzelne Geräteparameter innerhalb festgelegter Grenzen liegen, während bei der indirekten Kalibrierung Härtemessungen an Härtevergleichsplatten, die nach ISO/DIS 16859 3:2013 kalibriert wurden, verwendet werden, um die Hauptfunktionen des Prüfgerätes zu überprüfen. Das indirekte Verfahren kann für sich allein für regelmäßige Funktionsprüfungen im Betrieb angewendet werden.
ANMERKUNG 1   Die direkte Kalibrierung von Prüfgeräten nach dieser Norm kann nur dann durchgeführt werden, wenn die dafür erforderlichen Referenzwerte von den Geräteherstellern vorliegen.
ANMERKUNG 2   Wird nicht in Richtung des Schwerefeldes geprüft, sind die gemessenen Härtewerte beeinflusst. In diesen Fällen müssen Korrekturwerte vom Gerätehersteller zur Verfügung gestellt werden.

Matériaux métalliques - Essai de dureté Leeb - Partie 2 : Vérification et étalonnage des dispositifs d'essai (ISO 16859-2:2015)

L'ISO 16859-2:2015 spécifie les méthodes pour les vérifications directe et indirecte des instruments d'essai utilisés pour déterminer la dureté Leeb conformément à l'ISO 16859‑1, et décrit également quand ces deux types de vérification doivent être réalisés.
La vérification directe implique de vérifier que les paramètres individuels de performance de l'instrument se situent à l'intérieur des limites spécifiées, alors que la vérification indirecte utilise les mesurages de dureté de blocs d'essai de référence, étalonnés conformément à l'ISO 16859‑3, pour vérifier la performance globale de l'instrument, dans la direction de la pesanteur. La méthode indirecte peut être utilisée de son côté pour la vérification périodique de performance en service.

Kovinski materiali - Preskus trdote po Leebu - 2. del: Preverjanje in umerjanje naprav za preskušanje (ISO 16859-2:2015)

Ta del standarda ISO 16859 določa metode neposrednega in posrednega preverjanja instrumentov za preskušanje, ki se uporabljajo za ugotavljanje trdote po Leebu v skladu s standardom ISO 16859-1, ter opisuje tudi, kdaj je treba ti dve vrsti preverjanja izvesti. Neposredno preverjanje vključuje preverjanje, ali posamezni parametri delovanja instrumenta presegajo določene mejne vrednosti, posredno preverjanje pa temelji na meritvah trdote referenčnih preskusnih ploščic, umerjenih v skladu s standardom ISO 16859-3, da se preveri splošno delovanje instrumenta. Posredni način se lahko uporabi samostojno pri rednem preverjanju med delovanjem. OPOMBA°1: Neposredno preverjanje instrumentov za preskušanje, vključenih v tem standardu, je mogoče opraviti samo, če je proizvajalec instrumenta zagotovil ustrezne referenčne vrednosti. OPOMBA°2: Preskušanje v smeri, ki ni smer gravitacije, vpliva na izmerjeno trdoto. V takšnih primerih proizvajalec zagotovi vrednosti za popravek.

General Information

Status
Withdrawn
Publication Date
30-Jan-2016
Withdrawal Date
29-Apr-2016
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
07-Oct-2015
Completion Date
07-Oct-2015

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SLOVENSKI STANDARD
SIST EN ISO 16859-2:2016
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
SIST EN ISO 16859-2:2016 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 16859-2:2016
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SIST EN ISO 16859-2:2016
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,

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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.
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SIST EN ISO 16859-2:2016
EN ISO 16859-2:2015 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 16859-2:2016
EN ISO 16859-2:2015 (E)
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.
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SIST EN ISO 16859-2:2016
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SIST EN ISO 16859-2:2016
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
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SIST EN ISO 16859-2:2016
ISO 16859-2:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© 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

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
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
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SIST EN ISO 16859-2:2016
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 2015 – All rights reserved iii
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SIST EN ISO 16859-2:2016
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

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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

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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
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SIST EN ISO 16859-2:2016
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,
b) the support ring is mounted tightly to the bottom of the impact device,
c) cables are correctly connected, if applicable, and
d) the settings of the indicating unit are correct.
4 Direct verification
4.1 General

4.1.1 Direct verification should be carried out at a temperature of (23 ± 5) °C. If the verification is

made outside this temperature range, this shall be reported in the verification report.

4.1.2 The instruments used for verification shall be traceable to national measurement standards.

© ISO 2015 – All rights reserved 1
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SIST EN ISO 16859-2:2016
ISO 16859-2:2015(E)
4.1.3 Direct verification is comprised of the following:
a) verification of mass and geometry of impact body in accordance with 4.3;

b) verification of geometry of indenter ball, and of hardness of ball except for type E, in accordance

with 4.4;
c) verification of geometry of support ring in accordance with 4.5;
d) verification of impact velocity in accordance with 4.6.
4.2 Calibration parameters

Calibration parameters for reference in direct calibrations of Leeb impact devices are specified in Table 1.

Table 1 — Dimensions of Leeb impact devices for reference in direct calibrations
Parameters of types of impact devices
D S E DL D+15 C G

v m/s Impact 2,05 ± 0,1 2,05 ± 0,1 2,05 ± 0,1 1,82 ± 0,1 1,7 ± 0,1 1,4 ± 0,1 3,0 ± 0,1

velocity
mm Maximum 2,00 2,00 2,00 2,00 2,00 2,00 3,00
distance of ball
indenter
from test piece
surface at
velocity
measurement
M g Mass of impact 5,45 5.40 5,45 7,25 7,75 3,1 20,0
body (incl. ball ± 0,1 ± 0,1 ± 0,1 ± 0,1 ± 0,1 ± 0,05 ± 0,3
indenter)
R mm Spherical 1,5 1,5 1,5 1,39 1,5 1,5 2,5
radius of ± 0,005 ± 0,005 ± 0,005 ± 0,005 ± 0,005 ± 0,005 ± 0,005
indenter ball
Material of tungsten- ceramics polycrystal- tungste
...

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