ISO 13947:2007
(Main)Metallic powders — Test method for the determination of non-metallic inclusions in metal powders using a powder-forged specimen
Metallic powders — Test method for the determination of non-metallic inclusions in metal powders using a powder-forged specimen
ISO 13947:2007 specifies a metallographic method for determining the non-metallic inclusion level in metal powders using a powder-forged specimen. The test method covers repress powder-forged test specimens in which there has been minimal lateral flow ( This test method can also be used to determine the non-metallic inclusion content of powder-forged steel parts. However, in parts where there has been a significant amount of material flow, the near-neighbour separation distance needs to be changed, or the inclusion sizes agreed between the parties need to be adjusted. This test method is not suitable for determining the non-metallic inclusion level of parts that have been forged such that the core region contains porosity. At the magnification used for this test method, residual porosity is hard to distinguish from inclusions. Too much residual porosity makes a meaningful assessment of the inclusion population impossible.
Poudres métalliques — Détermination de la teneur en inclusions non métalliques dans les poudres métalliques à l'aide d'une éprouvette forgée de poudre
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 13947
First edition
2007-02-15
Metallic powders — Test method for the
determination of non-metallic inclusions
in metal powders using a powder-forged
specimen
Poudres métalliques — Détermination de la teneur en inclusions non
métalliques dans les poudres métalliques à l'aide d'une éprouvette
forgée de poudre
Reference number
ISO 13947:2007(E)
©
ISO 2007
---------------------- Page: 1 ----------------------
ISO 13947:2007(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall
not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the
unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2007
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 either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
©
ii ISO 2007 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 13947:2007(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Principle . 2
4 Significance and use . 2
5 Apparatus . 2
6 Test piece . 3
7 Procedure . 3
8 Test report . 4
9 Precision and bias . 4
©
ISO 2007 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 13947:2007(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 2.
The main task of technical committees is to prepare International Standards. 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 13947 was prepared by Technical Committee ISO/TC 119, Powder metallurgy, Subcommittee SC 2,
Sampling and testing methods for powders (including powders for hardmetals).
©
iv ISO 2007 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 13947:2007(E)
Metallic powders — Test method for the determination of
non-metallic inclusions in metal powders using a powder-forged
specimen
SAFETY PRECAUTIONS — This standard does not purport to address all of the safety problems, if any,
associated with its use. It is the responsibility of the user of this International Standard to establish
appropriate safety and health practices and to determine the applicability of regulatory limitations prior
to use.
1Scope
This International Standard specifies a metallographic method for determining the non-metallic inclusion level in
metal powders using a powder-forged specimen. The test method covers repress powder-forged test
specimens in which there has been minimal lateral flow (< 1%). The core region of the powder-forged test
specimen contains no porosity detectable at magnification.
100×
This test method can also be used to determine the non-metallic inclusion content of powder-forged steel parts.
However, in parts where there has been a significant amount of material flow, the near-neighbour separation
distance needs to be changed, or the inclusion sizes agreed between the parties need to be adjusted.
This test method is not suitable for determining the non-metallic inclusion level of parts that have been forged
such that the core region contains porosity. At the magnification used for this test method, residual porosity is
hard to distinguish from inclusions. Too much residual porosity makes a meaningful assessment of the inclusion
population impossible.
This test method may be applied to materials that contain manganese sulfide (admixed or prealloyed), provided
the near-neighbour separation distance is changed from 30µm to 15µm.
2 Normative references
The following referenced documents are indispensable for the application 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/TR 14321:1997, Sintered metal materials, excluding hardmetals— Metallographic preparation and
examination
ASTM B 796-02, Standard test method for nonmetallic inclusion content of powders intended for powder forging
(P/F) applications
ASTM E 3-01, Standard practice for preparation of metallographic specimens
ASTM E 768-99, Standard practice for preparing and evaluating specimens for automatic inclusion assessment
of steel
©
ISO 2007 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 13947:2007(E)
3Principle
A section representing the
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.