oSIST prEN ISO 2738:2024
(Main)Sintered metal materials, excluding hardmetals - Permeable sintered metal materials - Determination of density, oil content and open porosity (ISO/DIS 2738:2024)
Sintered metal materials, excluding hardmetals - Permeable sintered metal materials - Determination of density, oil content and open porosity (ISO/DIS 2738:2024)
Sintermetalle, ausgenommen Hartmetalle - Durchlässige Sintermetalle - Bestimmung der Dichte, des Tränkstoffgehaltes und der offenen Porosität (ISO/DIS 2738:2024)
Matériaux métalliques frittés, à l'exclusion des métaux-durs - Matériaux métalliques frittés perméables - Détermination de la masse volumique, de la teneur en huile et de la porosité ouverte (ISO/DIS 2738:2024)
La présente Norme internationale spécifie des méthodes pour la détermination de la masse volumique, de la teneur en huile et de la porosité ouverte de matériaux métalliques frittés perméables.Elle est particulièrement applicable aux coussinets en métal poreux et aux pièces détachées produites par compactage et frittage de poudres métalliques.
Sintrane kovine brez trdin - Prepustne sintrane kovine - Določevanje gostote, vsebnosti olja in odprte poroznosti (ISO/DIS 2738:2024)
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Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2024
Sintrane kovine brez trdin - Prepustne sintrane kovine - Določevanje gostote,
vsebnosti olja in odprte poroznosti (ISO/DIS 2738:2024)
Sintered metal materials, excluding hardmetals - Permeable sintered metal materials -
Determination of density, oil content and open porosity (ISO/DIS 2738:2024)
Sintermetalle, ausgenommen Hartmetalle - Durchlässige Sintermetalle - Bestimmung der
Dichte, des Tränkstoffgehaltes und der offenen Porosität (ISO/DIS 2738:2024)
Matériaux métalliques frittés, à l'exclusion des métaux-durs - Matériaux métalliques
frittés perméables - Détermination de la masse volumique, de la teneur en huile et de la
porosité ouverte (ISO/DIS 2738:2024)
Ta slovenski standard je istoveten z: prEN ISO 2738
ICS:
77.160 Metalurgija prahov Powder metallurgy
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 2738
ISO/TC 119/SC 3
Sintered metal materials, excluding
Secretariat: DIN
hardmetals — Permeable sintered
Voting begins on:
metal materials — Determination
2024-08-15
of density, oil content and open
Voting terminates on:
porosity
2024-11-07
Matériaux métalliques frittés, à l'exclusion des métaux-durs —
Matériaux métalliques frittés perméables — Détermination de la
masse volumique, de la teneur en huile et de la porosité ouverte
ICS: 77.160
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
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STANDARDS MAY ON OCCASION HAVE TO
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Reference number
ISO/DIS 2738:2024(en)
DRAFT
ISO/DIS 2738:2024(en)
International
Standard
ISO/DIS 2738
ISO/TC 119/SC 3
Sintered metal materials, excluding
Secretariat: DIN
hardmetals — Permeable sintered
Voting begins on:
metal materials — Determination
of density, oil content and open
Voting terminates on:
porosity
Matériaux métalliques frittés, à l'exclusion des métaux-durs —
Matériaux métalliques frittés perméables — Détermination de la
masse volumique, de la teneur en huile et de la porosité ouverte
ICS: 77.160
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
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POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
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Published in Switzerland Reference number
ISO/DIS 2738:2024(en)
ii
ISO/DIS 2738:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and designations . 2
5 Test procedures . 2
6 Equipment . 3
7 Test piece . 3
8 Test procedures . 4
8.1 Determination of the initial mass of the test piece .4
8.2 Removal of oil from the test piece by solvent extraction.4
8.3 Determination of the mass of the dried test piece.4
8.4 Impregnation with oil and surface coating .4
8.4.1 Full impregnation (for determination of the open porosity) .4
8.4.2 Partial impregnation (suitable for determination of the volume) .5
8.4.3 Surface coating methods (suitable for determination of the volume) .5
8.5 Determination of the mass of the fully impregnated test piece .5
8.6 Determination of the volume of the test piece .5
9 Expression of results . 9
9.1 Density .9
9.2 Oil content .9
9.3 Open porosity .9
10 Precision . 10
11 Test report .11
Bibliography .12
iii
ISO/DIS 2738:2024(en)
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 documents 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/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.
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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 the following URL:
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).
This fourth edition cancels and replaces the third edition (ISO 2738:1999), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— Clause 10 “Precision” revised
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
DRAFT International Standard ISO/DIS 2738:2024(en)
Sintered metal materials, excluding hardmetals — Permeable
sintered metal materials — Determination of density, oil
content and open porosity
1 Scope
This document specifies methods of determining the density, oil content and open porosity of permeable
sintered metal materials.
It applies in particular to porous metal bearings and to structural parts produced by pressing and sintering
metal powders.
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 758, Liquid chemical products for industrial use — Determination of density at 20 degrees C
ISO 13944, Lubricated metal-powder mixes — Determination of lubricant content — Soxhlet extraction method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological 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/
3.1
density
density of the test piece may be expressed in two ways:
3.1.1
dry density
mass, after drying, divided by the volume
3.1.2
fully impregnated density (wet density)
fully impregnated mass divided by the volume
3.2
oil content
oil content of the test piece may be expressed in two ways:
3.2.1
percentage by volume
volume of the oil divided by the volume of the test piece and multiplied by 100
ISO/DIS 2738:2024(en)
3.2.2
percentage of the volume of the open porosity
volume of the oil divided by the volume of the open porosity and multiplied by 100
3.3
open porosity (of the test piece)
oil content after full impregnation divided by the volume of the test piece and multiplied by 100 expressed
as a percentage by volume
3.4
volume (of the test piece)
total volume including the pores
4 Symbols and designations
Table 1 — Symbols and
...
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