EN ISO 6507-2:1997

Metallic materials - Vickers hardness test - Part 2: Verification of testing machines (ISO 6507-2:1997)

Metallische Werkstoffe - Härteprüfung nach Vickers - Teil 2: Prüfung der Prüfmaschinen (ISO 6507-2:1997)

In diesem Teil von ISO 6507 ist das Verfahren für die Prüfung von Härteprüfmaschinen zur Bestimmung der Vickershärte nach ISO 6507-1 festgelegt. In dieser Norm ist ein direktes Prüfverfahren zur Prüfung von Hauptfunktionen der Prüfmaschine und ein indirektes Prüfverfahren, das für die Ermittlung der Gesamtabweichung der Prüfmaschine geeignet ist, festgelegt. Das indirekte Prüfverfahren kann für die regelmäßige Routineüberprüfung beim Anwender eingesetzt werden.

Matériaux métalliques - Essai de dureté Vickers - Partie 2: Vérification des machines d'essai (ISO 6507-2:1997)

Kovinski materiali - Preskus trdote po Vickersu - 2. del: Preverjanje naprav za preskušanje (ISO 6507-2:1997)

General Information

• Status: Withdrawn
• Publication Date: 14-Nov-1997
• Withdrawal Date: 14-Dec-2005
• ICS: 77.040.10 - Mechanical testing of metals
• Technical Committee: ECISS/TC 101 - Test methods for steel (other than chemical analysis)
• Drafting Committee: ECISS/TC 1/SC 1 - Mechanical testing
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 15-Dec-2005
• Completion Date: 15-Dec-2005
• Ref Project: SIST EN ISO 6507-2:1998 - Metallic materials - Vickers hardness test - Part 2: Verification of testing machines (ISO 6507-2:1997)

Relations

• Replaced By: EN ISO 6507-2:2005 - Metallic materials - Vickers hardness test - Part 2: Verification and calibration of testing machines (ISO 6507-2:2005)
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 6507-2:1998
01-junij-1998
Kovinski materiali - Preskus trdote po Vickersu - 2. del: Preverjanje naprav za
preskušanje (ISO 6507-2:1997)
Metallic materials - Vickers hardness test - Part 2: Verification of testing machines (ISO
6507-2:1997)
Metallische Werkstoffe - Härteprüfung nach Vickers - Teil 2: Prüfung der Prüfmaschinen
(ISO 6507-2:1997)
Matériaux métalliques - Essai de dureté Vickers - Partie 2: Vérification des machines
d'essai (ISO 6507-2:1997)
Ta slovenski standard je istoveten z: EN ISO 6507-2:1997
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
SIST EN ISO 6507-2:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 6507-2:1998

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SIST EN ISO 6507-2:1998

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SIST EN ISO 6507-2:1998

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SIST EN ISO 6507-2:1998
INTERNATIONAL ISO
STANDARD 6507-2
Second edition
1997-11-15
Metallic materials — Vickers hardness
test —
Part 2:
Verification of testing machines
Matériaux métalliques — Essai de dureté Vickers —
Partie 2: Vérification des machines d'essai
A
Reference number
ISO 6507-2:1997(E)

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SIST EN ISO 6507-2:1998
ISO 6507-2:1997(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.
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.
International Standard ISO 6507-2 was prepared by Technical Committee ISO/TC 164, Mechanical
testing of metals, Subcommittee SC 3, Hardness testing.
This second edition of ISO 6507-2 cancels and replaces ISO 146:1984 and ISO 146-2:1993 as
follows:
— Combination of the two different International Standards for the verification of the hardness
testing machines (ISO 146:1989 and ISO 146-2:1993) into this part of ISO 6507.
— Addition of a new table (table 3) for the estimation capability and the maximum permissible
error of the measuring device.
— Changing of the values for the repeatability of the hardness testing machine in table 4.
— Addition of a new clause 6 concerning the intervals between the verifications.
— Addition of a new annex A "Example of a method for an indirect verification of the
measuring device" (using a reference indentation).
— Addition of a new annex B "Notes on diamond indenters".
ISO 6507 consists of the following parts, under the general title Metallic materials — Vickers
hardness test:
— Part 1: Test method
— Part 2: Verification of testing machines
— Part 3: Calibration of reference blocks
Annexes A and B of this part of ISO 6507 are for information only.
©  ISO 1997
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 the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet [e-mail]
X.400 c=ch; a=400net; p=iso; o=isocs; s=central
Printed in Switzerland
ii

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SIST EN ISO 6507-2:1998
©
INTERNATIONAL STANDARD  ISO ISO 6507-2:1997(E)
Metallic materials — Vickers hardness test —
Part 2:
Verification of testing machines
1  Scope
This part of ISO 6507 specifies a method of verification of testing machines for determining
Vickers hardness in accordance with ISO 6507-1.
It describes a direct verification method for checking the main functions of the machine, and an
indirect verification method suitable for the overall checking of the machine. The indirect
verification 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 is essential that
it is verified independently for each method.
Portable hardness testing machines shall comply with all the requirements of this part of
ISO 6507, but the word "relocation" in 6.1a) does not apply.
The force values in this part of ISO 6507 were calculated from kilogram force values. They were
introduced before the SI-system was adopted. It was decided to keep the values based on the
old units for this edition, but for the next revision it will be necessary to consider the advantage
of introducing rounded values of test force and the consequence on the hardness scales.
2  Normative references
The following standards contain provisions which, through reference in this text, constitute
provisions of this part of ISO 6507. At the time of publication, the editions indicated were valid.
All standards are subject to revision, and parties to agreements based on this part of ISO 6507
are encouraged to investigate the possibility of applying the most recent editions of the
standards indicated below. Members of IEC and ISO maintain registers of currently valid
International Standards.
1)
ISO 376:— , Metallic materials — Calibration of force-proving instruments used for the
verification of uniaxial testing machines.
ISO 3878:1983, Hardmetals — Vickers hardness test.
ISO 6507-1:1997, Metallic materials — Vickers hardness test — Part 1: Test method.
ISO 6507-3:1997, Metallic materials — Vickers hardness test — Part 3: Calibration of reference
blocks.
____________
1)  To be published. (Revision of ISO 376:1987)
1

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SIST EN ISO 6507-2:1998
© ISO
ISO 6507-2:1997(E)
3  General conditions
Before a Vickers hardness testing machine is verified, it shall be checked to ensure that
a) the machine is properly set up;
b) the plunger holding the indenter is capable of sliding in its guide;
c) the indenter-holder is firmly mounted in the plunger;
d) the test force can be applied and removed without shock or vibration and in such a manner
that the readings are not influenced;
e) if the measuring device is integral with the machine
1) the change from removing the test force to measuring mode does not influence the
readings,
2) illumination does not affect the readings,
3) the centre of the indentation is in the centre of the field of view, if necessary.
The illumination device of the measuring microscope shall produce uniform lighting of the
whole observed field and maximum contrast between the indentation and the surrounding
surface.
4 Direct verification
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.
The instruments used for verification shall have a certified traceability using the International
System of Units (SI).
Direct verification involves
a) verification of the test force;
b) verification of the indenter;
c) verification of the measuring device;
d) verification of the testing cycle.
4.1  Verification of the test force
4.1.1  Each test force used within the working range of the testing machine shall be measured.
Whenever applicable, this shall be done at not less than three positions of the plunger
uniformly spaced throughout its range of movement during testing.
4.1.2  The test force shall be measured by one of the following two methods:
a) by means of an elastic proving device in accordance with ISO 376, class 1,
b) by balancing against a force, accurate to ± 0,2 %, applied by means of standardized masses
with mechanical advantage.
4.1.3  Three readings shall be taken for each test force at each position of the plunger.
Immediately before each reading is taken, the plunger shall have been moved in the same
direction as during testing.
4.1.4  Each measurement for the force shall be within the tolerances of the nominal value of the
test force, as given in table 1.
2

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SIST EN ISO 6507-2:1998
© ISO
ISO 6507-2:1997(E)
Table 1
Ranges of test force, F Tolerances
N %
0,098 07 < F > 1,961 ± 1,0
0,098 07 < F , 1,961 ± 1,5
4.2  Verification of the indenter
4.2.1  The four faces of the square-based diamond pyramid shall be polished and free from
surface defects.
4.2.2  The verification of the shape of the indenter can be made by direct measurement or by
measurement of its projection on a screen.
4.2.3  The angle between the o
...