EN ISO 2740:1999

Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:1999)

Migrated from Progress Sheet (TC Comment) (2000-07-10): Revision in ISO/TC 119 followed by UAP

Sintermetalle, ausgenommen Hartmetalle - Zugprobestäbe (ISO 2740:1999)

Diese Internationale Norm gilt für alle Sintermetalle und -legierungen, ausgenommen Hartmetalle. Diese Internationale Norm legt - die Maße für die zurHerstellung der Zugprobestäbe durch Pressen und Sintern sowie durch Metall- Pulverspritzgießen (MIM) und Sintern verwendeten Matrizen fest; ferner - die Maße von Zugprobestäben aus Sinter- und Pulverschmiedewerkstoffen. Alle Maße sind in mm angegeben.

Matériaux en métal frittés, à l'exclusion des métaux-durs -Eprouvettes pour essai de traction (ISO 2740:1999)

Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:1999)

General Information

• Status: Withdrawn
• Publication Date: 30-Nov-1999
• Withdrawal Date: 28-Feb-2007
• ICS: 77.040 - Testing of metals
• ICS: 77.160 - Powder metallurgy
• Technical Committee: CEN/SS M11 - Powder metallurgy
• Drafting Committee: CEN/SS M11 - Powder metallurgy
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 01-Mar-2007
• Completion Date: 01-Mar-2007
• Ref Project: SIST EN ISO 2740:2000 - Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:1999)

Relations

• Replaced By: EN ISO 2740:2007 - Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:2007)
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 2740:2000
01-december-2000
Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO
2740:1999)
Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:1999)
Sintermetalle, ausgenommen Hartmetalle - Zugprobestäbe (ISO 2740:1999)
Matériaux en métal frittés, a l'exclusion des métaux-durs -Eprouvettes pour essai de
traction (ISO 2740:1999)
Ta slovenski standard je istoveten z: EN ISO 2740:1999
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
77.160 Metalurgija prahov Powder metallurgy
SIST EN ISO 2740:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 2740:2000

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SIST EN ISO 2740:2000

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SIST EN ISO 2740:2000

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SIST EN ISO 2740:2000
INTERNATIONAL ISO
STANDARD 2740
Third edition
1999-12-01
Sintered metal materials, excluding
hardmetals — Tensile test pieces
Matériaux en métal fritté, à l'exclusion des métaux-durs — Éprouvettes
pour essais de traction
A
Reference number
ISO 2740:1999(E)

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SIST EN ISO 2740:2000
ISO 2740:1999(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 2740 was prepared by Technical Committee ISO/TC 119, Powder metallurgy,
Subcommittee SC 3, Sampling and testing methods for sintered metal materials (excluding hardmetals).
This third edition cancels and replaces the second edition (ISO 2740:1986) which has been technically revised.
©  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
ii

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SIST EN ISO 2740:2000
INTERNATIONAL STANDARD  © ISO ISO 2740:1999(E)
Sintered metal materials, excluding hardmetals — Tensile
test pieces
1 Scope
This International Standard is applicable to all sintered metals and alloys, excluding hardmetals.
This International Standard specifies:
 the die cavity dimensions used for making tensile test pieces by pressing and sintering, and by Metal Injection
Moulding (MIM) and sintering;
 the dimensions of tensile test pieces machined from sintered and powder forged materials.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard 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 6892:1998, Metallic materials — Tensile testing at ambient temperature.
ISO 7500-1:1999, Metallic materials — Verification of static uniaxial test machines — Part 1: Tension/compression
testing machines — Verification and calibration of the force-measuring system.
3 Method of testing
3.1  Test pieces shall be tested in accordance with ISO 6892, and the tensile test machine shall be calibrated to
class 1, in accordance with ISO 7500-1.
3.2  Data are to be reported for three or more test pieces.
Manufacture of test pieces
4
Pressed and sintered test pieces
4.1
The tensile test pieces shall have thicknesses from 5 mm to 6,5 mm. Thickness tolerance of 1,5 mm accommodates
varying apparent densities in metal powders. At testing, the thinner pieces have less grip slippage and are more
likely to break near the centre of the gauge length.
If necessary for measuring elongation, marks may be lightly scribed 25 mm apart and symmetrically about the
centre line [see Figures 1 a) and 2 a)]. Between the scribed marks, the thickness shall not vary by more than
0,04 mm. The gauge length shall be scribed in such a way that the tensile properties are not affected.
1

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SIST EN ISO 2740:2000
© ISO
ISO 2740:1999(E)
Because of the possibility of creating microlaminations in the corners of test pieces compacted under laboratory
conditions, representative sintered test pieces shall be examined metallographically to show that there are no
microlaminations longer than 0,25 mm.
4.2 Die specifications
The dimensions of the two permitted die cavities are shown in Figures 1 b) and 2 b). The dies should preferably be
of hardmetal and their surface finish shall be such as to allow compression of the test pieces under normal
conditions. Dies may include a small exit taper to facilitate ejection and to avoid cracks or microlaminations in the
test pieces. A die cavity tapered 0,01 per side to aid ejection may be enlarged by 0,5 % for tooling to be used for
repr
...