EN ISO 6508-2:2023
(Main)Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines and indenters (ISO 6508-2:2023)
Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines and indenters (ISO 6508-2:2023)
This document specifies two separate methods of verification of testing machines (direct and indirect) for determining Rockwell hardness in accordance with ISO 6508-1, together with a method for verifying Rockwell hardness indenters.
The direct verification method is used to determine whether the main parameters associated with the machine function, such as applied force, depth measurement, and testing cycle timing, fall within specified tolerances. The indirect verification method uses a number of calibrated reference hardness blocks to determine how well the machine can measure a material of known hardness.
This document is applicable to stationary and portable hardness testing machines.
Attention is drawn to the fact that the use of tungsten carbide composite for ball indenters is considered to be the standard type of Rockwell indenter ball.
Metallische Werkstoffe - Härteprüfung nach Rockwell - Teil 2: Überprüfung und Kalibrierung der Prüfmaschinen und Eindringkörper (ISO 6508-2:2023)
Dieses Dokument legt zwei unterschiedliche Verfahren für die Überprüfung von Härteprüfmaschinen (direkt und indirekt) zur Bestimmung der Rockwellhärte nach ISO 6508 1 in Verbindung mit einem Verfahren für die Überprüfung von Rockwell-Härteeindringkörpern fest.
Die direkte Überprüfung wird angewendet, um festzustellen, ob die Hauptparameter der Maschinenfunktion, wie z. B. die aufgebrachte Kraft, die Eindringtiefenmessung und die zeitliche Steuerung der Prüfzyklen, die festgelegten Grenzabweichungen einhalten. Bei der indirekten Überprüfung wird eine Reihe von kalibrierten Härtevergleichsplatten verwendet, um festzustellen, wie gut die Prüfmaschine, einen Werkstoff bekannter Härte messen kann.
Dieses Dokument ist auf ortsfeste und tragbare Härteprüfmaschinen anwendbar.
Es ist zu beachten, dass als Normeindringkugel für die Rockwell-Prüfung nur solche aus Wolframcarbidgemisch gelten.
Matériaux métalliques - Essai de dureté Rockwell - Partie 2: Vérification et étalonnage des machines d'essai et des pénétrateurs (ISO 6508-2:2023)
Le présent document spécifie deux méthodes séparées de vérification des machines d'essai (directe et indirecte) pour la détermination de la dureté Rockwell selon l’ISO 6508-1, de même qu’une méthode de vérification des pénétrateurs de dureté Rockwell.
La méthode de vérification directe est utilisée pour déterminer si les principaux paramètres associés aux fonctions de la machine, telles que la force appliquée, le mesurage de l’enfoncement et le phasage du cycle d’essai, se situent dans les tolérances spécifiées. La méthode de vérification indirecte utilise un certain nombre de blocs de dureté de référence étalonnés pour déterminer avec quelle exactitude la machine peut mesurer un matériau de dureté connue.
Le présent document est applicable aux machines d'essai de dureté fixes et portables.
L’attention est attirée sur le fait que l’utilisation d’un composite en carbure de tungstène pour les pénétrateurs à bille est considérée être le type courant de bille de pénétrateur Rockwell.
Kovinski materiali - Preskus trdote po Rockwellu - 2. del: Preverjanje in umerjanje naprav za preskušanje (ISO 6508-2:2023)
Ta dokument določa dve ločeni metodi za preverjanje naprav za preskušanje (neposredna in posredna)
za določanje trdote po Rockwellu v skladu s standardom ISO 6508-1 skupaj z metodo za preverjanje
vtisnih teles za preskušanje trdote po Rockwellu.
Metoda neposrednega preverjanja se uporablja za določanje, ali so glavni parametri, povezani z
delovanjem stroja, npr. uporabljena sila, merjenje globine in čas preskusnega cikla, znotraj
dovoljenih toleranc. Pri posredni metodi preverjanja se uporabi določeno število
umerjenih ploščic referenčne trdote, s katerimi se preveri, kako natančno lahko naprava izmeri material z znano trdoto.
Ta dokument se uporablja za nepremične in premične naprave za preskušanje trdote.
Opozoriti je treba, da se za standardno vrsto vtisne krogle po Rockwellu šteje kroglično vtisno telo
iz kompozita volframovega karbida.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2024
Kovinski materiali - Preskus trdote po Rockwellu - 2. del: Preverjanje in umerjanje
naprav za preskušanje (ISO 6508-2:2023)
Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing
machines and indenters (ISO 6508-2:2023)
Metallische Werkstoffe - Härteprüfung nach Rockwell - Teil 2: Überprüfung und
Kalibrierung der Prüfmaschinen und Eindringkörper (ISO 6508-2:2023)
Matériaux métalliques - Essai de dureté Rockwell - Partie 2: Vérification et étalonnage
des machines d'essai et des pénétrateurs (ISO 6508-2:2023)
Ta slovenski standard je istoveten z: EN ISO 6508-2:2023
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 6508-2
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2023
EUROPÄISCHE NORM
ICS 77.040.10 Supersedes EN ISO 6508-2:2015
English Version
Metallic materials - Rockwell hardness test - Part 2:
Verification and calibration of testing machines and
indenters (ISO 6508-2:2023)
Matériaux métalliques - Essai de dureté Rockwell - Metallische Werkstoffe - Härteprüfung nach Rockwell -
Partie 2: Vérification et étalonnage des machines Teil 2: Überprüfung und Kalibrierung der
d'essai et des pénétrateurs (ISO 6508-2:2023) Prüfmaschinen und Eindringkörper (ISO 6508-2:2023)
This European Standard was approved by CEN on 13 November 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.
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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 6508-2:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 6508-2:2023) 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 June 2024, and conflicting national standards shall be
withdrawn at the latest by June 2024.
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 6508-2:2015.
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 6508-2:2023 has been approved by CEN as EN ISO 6508-2:2023 without any
modification.
INTERNATIONAL ISO
STANDARD 6508-2
Fourth edition
2023-12
Metallic materials — Rockwell
hardness test —
Part 2:
Verification and calibration of testing
machines and indenters
Matériaux métalliques — Essai de dureté Rockwell —
Partie 2: Vérification et étalonnage des machines d'essai et des
pénétrateurs
Reference number
ISO 6508-2:2023(E)
ISO 6508-2:2023(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
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Published in Switzerland
ii
ISO 6508-2:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General conditions .1
5 Direct verification of the testing machine . 2
5.1 General . 2
5.2 Calibration and verification of the test force . 2
5.3 Calibration and verification of the depth-measuring system . 3
5.4 Calibration and verification of the testing cycle . 4
5.5 Calibration and verification of the machine hysteresis . 4
6 Indirect verification of the testing machine . 4
6.1 General . 4
6.2 Procedure . 4
6.3 Repeatability . 5
6.4 Bias . 7
6.5 Uncertainty of measurement . 7
7 Calibration and verification of Rockwell hardness indenters . 7
7.1 General . 7
7.2 Diamond indenter . 7
7.2.1 General . 7
7.2.2 Direct calibration and verification of the diamond indenter . 7
7.2.3 Indirect verification of diamond indenters . 8
7.3 Ball indenter . 9
7.3.1 Direct calibration and verification of the ball indenter . 10
7.3.2 Indirect verification of the ball holder assembly . . 10
7.4 Marking . 11
8 Intervals between direct and indirect calibrations and verifications .11
9 Verification report .12
Annex A (normative) Repeatability of testing machines .13
Annex B (informative) Uncertainty of measurement of the calibration results of the
hardness testing machine .15
Bibliography .23
iii
ISO 6508-2:2023(E)
Foreword
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This document was prepared by Technical Committee ISO/TC 164, Mechanical testing of
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