EN ISO 6508-3:1999

Metallic materials - Rockwell hardness test - Part 3: Calibration of reference blocks (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-3:1999)

Method for the calibration of reference blocks to be used for the indirect verification of Rockwell testing machines.

Metallische Werkstoffe - Härteprüfung nach Rockwell (Skalen A, B, C, D, E, F, G, H, K, N, T) - Teil 3: Kalibrierung von Härtevergleichsplatten (ISO 6508-3:1999)

In dieser Internationalen Norm ist das Verfahren für die Kalibrierung von Härtevergleichsplatten festgelegt, die bei der indirekten Prüfung von Härteprümaschinen nach Rockwell (Skalen A, B, C, D, E, F, G, H, K, N, T) nach ISO 6508-2 benutzt werden.

Matériaux métalliques - Essai de dureté Rockwell - Partie 3:Etalonnage des blocs de référence (échelles A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-3:1999)

Kovinski materiali - Preskus trdote po Rockwellu - 3. del: Kalibracija primerjalnih ploščic (skale A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-3:1999)

General Information

• Status: Withdrawn
• Publication Date: 31-Aug-1999
• 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 - Steel - Mechanical testing
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 15-Dec-2005
• Completion Date: 15-Dec-2005
• Ref Project: SIST EN ISO 6508-3:2000 - Metallic materials - Rockwell hardness test - Part 3: Calibration of reference blocks (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-3:1999)

Relations

• Replaces: EN 10109-3:1994 - Metallic materials - Hardness test - Part 3: Calibration of standardized blocks to be used for Rockwell hardness testing machines (scales A,B,C,D,E,F,G,H,K,N,T)
• Effective Date: 22-Dec-2008
• Replaced By: EN 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) (ISO 6508-3:2005)
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 6508-3:2000
01-oktober-2000
1DGRPHãþD
SIST EN 10109-3:1996
.RYLQVNLPDWHULDOL3UHVNXVWUGRWHSR5RFNZHOOXGHO.DOLEUDFLMDSULPHUMDOQLK
SORãþLFVNDOH$%&'()*+.17,62
Metallic materials - Rockwell hardness test - Part 3: Calibration of reference blocks
(scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-3:1999)
Metallische Werkstoffe - Härteprüfung nach Rockwell (Skalen A, B, C, D, E, F, G, H, K,
N, T) - Teil 3: Kalibrierung von Härtevergleichsplatten (ISO 6508-3:1999)
Matériaux métalliques - Essai de dureté Rockwell - Partie 3:Etalonnage des blocs de
référence (échelles A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-3:1999)
Ta slovenski standard je istoveten z: EN ISO 6508-3:1999
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
SIST EN ISO 6508-3:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 6508-3:2000

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SIST EN ISO 6508-3:2000

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SIST EN ISO 6508-3:2000

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SIST EN ISO 6508-3:2000

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SIST EN ISO 6508-3:2000

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SIST EN ISO 6508-3:2000
INTERNATIONAL ISO
STANDARD 6508-3
First edition
1999-09-01
Metallic materials — Rockwell hardness
test —
Part 3:
Calibration of reference blocks (scales A, B, C,
D, E, F, G, H, K, N, T)
Matériaux métalliques — Essai de dureté Rockwell —
Partie 3: Étalonnage des blocs de référence (échelles A, B, C, D, E, F, G,
H, K, N, T)
A
Reference number
ISO 6508-3:1999(E)

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SIST EN ISO 6508-3:2000
ISO 6508-3:1999(E)
Contents Page
1 Scope .1
2 Normative references .1
3 Manufacture of reference blocks .1
4 Calibration machine.2
5 Calibration procedure.4
6 Number of indentations .4
7 Uniformity of hardness .4
8 Marking .5
9 Validity .5
Annex A (normative) Uniformity of reference blocks.6
©  ISO 1999
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]
Printed in Switzerland
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SIST EN ISO 6508-3:2000
© ISO
ISO 6508-3:1999(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 3.
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 6508-3 was prepared by the Technical Committee ISO/TC 164, Mechanical testing of
metals, Subcommittee SC 3, Hardness testing.
This first edition of ISO 6508-3 cancels and replaces ISO 674:1988 and ISO 1355:1989, of which it constitutes a
technical revision as follows:
 Combination of the two different International Standards for the calibration of the hardness reference blocks
(ISO 674:1988 and ISO 1355:1989) into this part of ISO 6508.
 Change of maximum permissible values of non-uniformity of the reference blocks in Table 2.
 Addition of clause 9 concerning the validity of the reference blocks.
 Addition of the hardmetal ball as indenter.
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)
Annex A forms a normative part of this part of ISO 6508.
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SIST EN ISO 6508-3:2000
© ISO
ISO 6508-3:1999(E)
Introduction
The force values in this part of ISO 6508 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 part of ISO 6508 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.
Attention is drawn to the fact that in this part of ISO 6508, the use of hardmetal balls as indenters is equivalent to
the use of steel balls; however, it is indicated that the measurements made with the two ball types give different
results.
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SIST EN ISO 6508-3:2000
INTERNATIONAL STANDARD  © ISO ISO 6508-3:1999(E)
Metallic materials — Rockwell hardness test —
Part 3:
Calibration of reference blocks (scales A, B, C, D, E, F, G, H, K, N, T)
1 Scope
This part of ISO 6508 specifies a method for the calibration of reference blocks to be used for the indirect
verification of Rockwell hardness testing machines (scales A, B, C, D, E, F, G, H, K, N, T), as specified in
ISO 6508-2.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this
part of ISO 6508. For dated references, subsequent amendments to, or revisions of, any of these publications do not
apply. However, parties to agreements based on this part of ISO 6508 are encouraged to investigate the possibility of
applying the most recent editions of the normative documents indicated below. For undated references, the latest
edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid
International Standards.
ISO 376, Metallic materials — Calibration of force-proving instruments used for verification of uniaxial testing
machines.
ISO 3878, Hardmetals — Vickers hardness test.
ISO 4287:1997, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Terms, definitions
and surface texture parameters.
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 6508-2:1999, 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).
Guide to the Expression of Uncertainty in Measurement, ISO, 1993.
3 Manufacture of reference blocks
3.1  The block shall be specially manufactured for use as a hardness reference block.
NOTE Attention is drawn to the need to use a manufacturing process which will give the necessary homogeneity, stability
of structure and uniformity of surface hardness.
3.2  Each metal block to be calibrated shall be of a thickness no less than 6 mm.
NOTE Reference blocks should have a thickness of 6 mm to 16 mm. To minimize the effect of hardness change with
increasing number of indents, a minimum thickness of 12 mm should be used.
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SIST EN ISO 6508-3:2000
© ISO
ISO 6508-3:1999(E)
3.3  The reference blocks shall be free of magnetism. It is recommended that the manufacturer ensure that the
blocks, if of steel, have been demagnetized
...