EN ISO 2740:2023
(Main)Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:2023)
Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:2023)
This document is applicable to all sintered metals and alloys, excluding hardmetals.
This document 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.
Sintermetalle, ausgenommen Hartmetalle - Zugprobestäbe (ISO 2740:2023)
Dieses Dokument ist anwendbar für alle Sintermetalle und -legierungen, ausgenommen Hartmetalle.
Dieses Dokument legt
- die Maße für die zur Herstellung der Zugprobestäbe durch Pressen und Sintern sowie durch Metallpulver spritzgießen (MIM, en: metal injection moulding) und Sintern verwendeten Matrizen;
- die Maße von Zugprobestäben aus Sinter- und Pulverschmiedewerkstoffen fest.
Matériaux en métal fritté, à l'exclusion des métaux-durs - Éprouvettes pour essai de traction (ISO 2740:2023)
Le présent document est applicable à tous les métaux et alliages frittés, à l'exclusion des métaux-durs.
Le présent document spécifie:
— les dimensions internes de la matrice utilisée pour confectionner des éprouvettes de traction, par compression et frittage, et par moulage par injection de métal (MIM) et frittage;
— les dimensions des éprouvettes de traction usinées dans des matériaux frittés ou frittés-forgés.
Sintrane kovine brez trdin - Preskušanci za natezni preskus (ISO 2740:2023)
Ta dokument se uporablja za vse sintrane kovine in zlitine razen trdih kovin.
Dokument določa:
– mere livne votline forme, uporabljene za izdelovanje preskušancev za natezni preskus s pritiskanjem in sintranjem ter z brizganjem kovinskih prašnatih materialov (MIM) in sintranjem;
– dimenzije preskušancev za natezni preskus, ki so strojno obdelani iz sintranih materialov in materialov, obdelanih s prašno metalurgijo.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2023
Sintrane kovine brez trdin - Preskušanci za natezni preskus (ISO 2740:2023)
Sintered metal materials, excluding hardmetals - Tensile test pieces (ISO 2740:2023)
Sintermetalle, ausgenommen Hartmetalle - Zugprobestäbe (ISO 2740:2023)
Matériaux en métal fritté, à l'exclusion des métaux-durs - Éprouvettes pour essai de
traction (ISO 2740:2023)
Ta slovenski standard je istoveten z: EN ISO 2740:2023
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
77.160 Metalurgija prahov Powder metallurgy
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 2740
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2023
EUROPÄISCHE NORM
ICS 77.040.10; 77.160 Supersedes EN ISO 2740:2009
English Version
Sintered metal materials, excluding hardmetals - Tensile
test pieces (ISO 2740:2023)
Matériaux en métal fritté, à l'exclusion des métaux- Sintermetalle, ausgenommen Hartmetalle -
durs - Éprouvettes pour essai de traction (ISO Zugprobestäbe (ISO 2740:2023)
2740:2023)
This European Standard was approved by CEN on 1 September 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.
CEN members are the national standards bodies of 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
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 2740:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 2740:2023) has been prepared by Technical Committee ISO/TC 119 "Powder
metallurgy" in collaboration with Technical Committee CEN/SS M11 “Powder metallurgy” the
secretariat of which is held by CCMC.
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 March 2024, and conflicting national standards shall
be withdrawn at the latest by March 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 2740:2009.
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 2740:2023 has been approved by CEN as EN ISO 2740:2023 without any modification.
INTERNATIONAL ISO
STANDARD 2740
Sixth edition
2023-09
Sintered metal materials, excluding
hardmetals — Tensile test pieces
Matériaux en métal fritté, à l'exclusion des métaux-durs —
Éprouvettes pour essai de traction
Reference number
ISO 2740:2023(E)
ISO 2740:2023(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
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 2740:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Method of testing . 1
5 Manufacture of test pieces .1
5.1 Pressed and sintered test pieces . 1
5.2 Die specifications . 2
6 Metal injection-moulded test pieces .2
7 Machined test pieces . 2
8 Identification of test pieces .3
iii
ISO 2740:2023(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 119, Powder metallurgy,
Subcommittee SC 3, Sampling and testing methods for sintered metal materials (excluding hardmetals), in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/SS
M11, Powder metallurgy, in accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
This sixth edition cancels and replaces the fifth edition (ISO 2740:2009), which has been technically
revised.
The main changes are as follows:
— Figure 3, specifically the die in it, has been updated;
— Figure 4 (former Figure 3), table below, Type A1: Value R has been corrected to 12,5 mm;
— Figure 4 (former Figure 3), table below, Type A2: Value R has been corrected to 11,5 mm;
— references to the revised ISO 6892-1 has been updated;
th
— in 5.2, measurement unit given to optional die exit taper and 4 paragraph has been inserted;
— a new test piece geometry has been added as Figure 3.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
INTERNATIONAL STANDARD ISO 2740:2023(E)
Sintered metal materials, excluding hardmetals — Tensile
test pieces
1 Scope
This document is applicable to all sintered metals and alloys, excluding hardmetals.
This document 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 documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Calibration and verification of the force-measuring system
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Method of testing
4.1 Test pieces shall be tested in accordance with ISO 6892-1, and the tensile test machine shall be
calibrated to Class 1, in accordance with ISO 7500-1.
4.2 Data are to be reported for three or more test pieces.
5 Manufacture of test pieces
5.1 Pressed and sintered test pieces
The tensile test pieces shall have thicknesses from 5 mm to 6,5 mm. A thickness tolerance of 1,5 mm
accommodates varying apparent densities in metal powders.
During testing, the thinner pieces have less grip slippage and are more likely to break near the centre of
the gauge length.
ISO 2740:2023(E)
If necessary for measuring elongation, marks may be lightly scribed 25 mm apart and symmetrically
about the centre line, see Figures 1 a), 2 a) and 3 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.
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.
5.2 Die specifications
The dimensions of the permitted die cavities are shown in Figures 1 b), 2 b) and 3 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 microlami
...
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