EN ISO 6508-2:2005
(Main)Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005)
Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005)
ISO 6508-2:2005 specifies a method of verification of testing machines for determining Rockwell hardness (scales A, B, C, D, E, F, G, H, K, N, T) in accordance with ISO 6508-1.
Metallische Werkstoffe - Härteprüfung nach Rockwell - Teil 2: Prüfung und Kalibrierung der Prüfmaschinen (Skalen A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005)
In diesem Teil von ISO 6508 ist das Verfahren für die Prüfung und Kalibrierung von Härteprüfmaschinen zur Bestimmung der Rockwellhärte (Skalen A, B, C, D, E, F, G, H, K, N, T) nach ISO 6508-1 festgelegt.
Es ist ein direktes Verfahren zur Prüfung von Hauptfunktionen der Maschine und ein indirektes Verfahren, das zur Ermittlung der Funktionsfähigkeit der Maschine geeignet ist, festgelegt. Das indirekte Verfahren kann für die regelmäßige Routineüberprüfung der Maschine beim Anwender angewendet werden.
Wird eine Härteprüfmaschine auch für andere Härteprüfverfahren verwendet, muss sie unabhängig für jedes dieser Verfahren geprüft werden.
Dieser Teil von ISO 6508 ist auch anwendbar auf tragbare Härteprüfmaschinen.
Matériaux métalliques - Essai de dureté Rockwell - Partie 2: Vérification et étalonnage des machines d'essai (échelles A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005)
L'SO 6508-2:2005 spécifie une méthode de vérification des machines d'essai utilisées pour la détermination de la dureté Rockwell (échelles A, B, C, D, E, F, G, H, K, N, T) conformément à l'ISO 6508-1.
Kovinski materiali – Preskus trdote po Rockwellu – 2. del: Preverjanje in umerjanje naprav za preskušanje (skale A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2006
1DGRPHãþD
SIST EN ISO 6508-2:2000
Kovinski materiali – Preskus trdote po Rockwellu – 2. del: Preverjanje in umerjanje
naprav za preskušanje (skale A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005)
Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing
machines (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005)
Metallische Werkstoffe - Härteprüfung nach Rockwell - Teil 2: Prüfung und Kalibrierung
der Prüfmaschinen (Skalen A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005)
Matériaux métalliques - Essai de dureté Rockwell - Partie 2: Vérification et étalonnage
des machines d'essai (échelles A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005)
Ta slovenski standard je istoveten z: EN ISO 6508-2:2005
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.
EUROPEAN STANDARD
EN ISO 6508-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 77.040.10 Supersedes EN ISO 6508-2:1999
English Version
Metallic materials - Rockwell hardness test - Part 2: Verification
and calibration of testing machines (scales A, B, C, D, E, F, G,
H, K, N, T) (ISO 6508-2:2005)
Matériaux métalliques - Essai de dureté Rockwell - Partie 2: Metallische Werkstoffe - Härteprüfung nach Rockwell - Teil
Vérification et étalonnage des machines d'essai (échelles 2: Prüfung und Kalibrierung der Prüfmaschinen (Skalen A,
A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005) B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:2005)
This European Standard was approved by CEN on 14 December 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6508-2:2005: E
worldwide for CEN national Members.
Foreword
This document (EN ISO 6508-2:2005) has been prepared by Technical Committee ISO/TC 164
"Mechanical testing of metals" in collaboration with Technical Committee ECISS/TC 1 "Steel -
Mechanical testing", 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 2006, and conflicting national
standards shall be withdrawn at the latest by June 2006.
This document supersedes EN ISO 6508-2:1999.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 6508-2:2005 has been approved by CEN as EN ISO 6508-2:2005 without any
modifications.
INTERNATIONAL ISO
STANDARD 6508-2
Second edition
2005-12-15
Metallic materials — Rockwell hardness
test —
Part 2:
Verification and calibration of testing
machines (scales A, B, C, D, E, F, G, H, K,
N, T)
Matériaux métalliques — Essai de dureté Rockwell —
Partie 2: Vérification et étalonnage des machines d'essai (échelles A, B,
C, D, E, F, G, H, K, N, T)
Reference number
ISO 6508-2:2005(E)
©
ISO 2005
ISO 6508-2:2005(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2005
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 member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2005 – All rights reserved
ISO 6508-2:2005(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 General conditions . 1
4 Direct verification. 2
5 Indirect verification. 5
6 Intervals between verifications . 8
7 Verification report/calibration certificate . 8
Annex A (normative) Repeatability of testing machines. 9
Annex B (informative) Uncertainty of measurement of the calibration results of the hardness
testing machine. 11
Bibliography . 18
ISO 6508-2:2005(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 6508-2 was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals, Subcommittee
SC 3, Hardness testing.
This second edition cancels and replaces the first edition (ISO 6508-2:1999), which has been technically
revised.
ISO 6508 consists of the following parts, under the general title Metallic materials — Rockwell hardness test:
— Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T)
— Part 2: Verification and calibration of testing machines (scales A, B, C, D, E, F, G, H, K, N, T)
— Part 3: Calibration of reference blocks (scales A, B, C, D, E, F, G, H, K, N, T)
iv © ISO 2005 – All rights reserved
ISO 6508-2:2005(E)
Introduction
Attention is drawn to the fact that, in this part of ISO 6508, the use of hardmetal for ball indenters is
considered to be the standard type of Rockwell indenter ball. Steel indenter balls may be continued to be used
if specified in a product specification, or by special agreement.
INTERNATIONAL STANDARD ISO 6508-2:2005(E)
Metallic materials — Rockwell hardness test —
Part 2:
Verification and calibration of testing machines (scales A, B, C,
D, E, F, G, H, K, N, T)
1 Scope
This part of ISO 6508 specifies a method of verification of testing machines for determining Rockwell
hardness (scales A, B, C, D, E, F, G, H, K, N, T) in accordance with ISO 6508-1.
It specifies a direct method for checking the main functions of the machine operation and an indirect method
suitable for the overall checking of the machine. The indirect method may be used on its own for periodic
routine checking of the machine in service.
If a testing machine is also to be used for other methods of hardness testing, it shall be verified independently
for each method.
This part of ISO 6508 is applicable to portable hardness testing machines.
2 Normative references
The following referenced documents are indispensable for the application 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 376:2004, Metallic materials — Calibration of force-proving instruments used for verification of uniaxial
testing machines
ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method
ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method (scales A, B, C, D, E, F, G, H,
K, N, T)
ISO 6508-3:2005, Metallic materials — Rockwell hardness test — Part 3: Calibration of reference blocks
(scales A, B, C, D, E, F, G, H, K, N, T)
3 General conditions
Before a Rockwell 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:
Especially it should be checked that:
a) the plunger holding the indenter is capable of sliding in its guide;
ISO 6508-2:2005(E)
b) the indenter-holder is firmly mounted in the plunger;
c) the test force can be applied and removed without shock or vibration and in such a manner that the
readings are not influenced.
It shall be checked that the readings are not affected either by movements of the test piece or by deformation
of the frame. When a device is supplied, which locks the test piece against the upper part of the frame, the
locking force shall exceed the total test force. The influence of deformations may be checked by using a
plunger with a spherical tip (diameter of at least 10 mm), instead of the indenter, bearing against the anvil
through a spacer and using the locking device when it is supplied. The material of the plunger and of the
spacer have a hardness of at least 60 HRC. The readings of the measuring system (with preliminary force
applied) before application and after removal of the additional force shall not differ by more than 1,5 Rockwell
units (without locking equipment) and 0,5 Rockwell units (with locking equipment).
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 of this temperature range, this shall be reported in the verification report.
4.1.2 The instruments used for verification and calibration shall be traceable to national standards.
4.1.3 Direct verification involves:
a) calibration of the test force;
b) verification of the indenter;
c) calibration of the depth-measuring system;
d) verification of the testing cycle.
4.2 Calibration of the test force
4.2.1 The preliminary test force F (see 4.2.4) and each total test force F used (see 4.2.5) shall be
measured, and, whenever applicable, this shall be done at not less than three positions of the plunger spaced
throughout its range of movement during testing. The preliminary test force shall be held for at least 2 s.
4.2.2 Three readings shall be taken for each force at each position of the plunger. Immediately before each
reading is taken, the plunger shall be moved in the same direction as during t
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.