EN ISO 3954:2007

SLOVENSKI STANDARD
01-november-2007
1DGRPHãþD
SIST EN 23954:2000
3UDãNL]DXSRUDERYSUDãNDVWLPHWDOXUJLML9]RUþHQMH,62
Powders for powder metallurgical purposes - Sampling (ISO 3954:2007)
Pulver für die Pulvermetallurgie - Probenahme (ISO 3954:2007)
Poudres pour emploi en métallurgie des poudres - Échantillonnage (ISO 3954:2007)
Ta slovenski standard je istoveten z: EN ISO 3954:2007
ICS:
77.160 Metalurgija prahov Powder metallurgy
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 3954
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2007
ICS 77.160 Supersedes EN 23954:1993
English Version
Powders for powder metallurgical purposes - Sampling (ISO
3954:2007)
Poudres pour emploi en métallurgie des poudres - Pulver für die Pulvermetallurgie - Probenahme (ISO
Échantillonnage (ISO 3954:2007) 3954:2007)
This European Standard was approved by CEN on 27 August 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3954:2007: E
worldwide for CEN national Members.

Contents Page
Foreword.3

Foreword
This document (EN ISO 3954:2007) 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 CMC.
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 2008, and conflicting national standards shall be withdrawn at
the latest by March 2008.
This document supersedes EN 23954:1993.
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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 3954:2007 has been approved by CEN as a EN ISO 3954:2007 without any modification.

INTERNATIONAL ISO
STANDARD 3954
Second edition
2007-09-01
Powders for powder metallurgical
purposes — Sampling
Poudres pour emploi en métallurgie des poudres — Échantillonnage

Reference number
ISO 3954:2007(E)
©
ISO 2007
ISO 3954:2007(E)
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ii © ISO 2007 – All rights reserved

ISO 3954:2007(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 3954 was prepared by Technical Committee ISO/TC 119, Power metallurgy, Subcommittee SC 2,
Sampling and testing methods for powders (including powders for hardmetals).
This second edition cancels and replaces the first edition (ISO 3954:1977), which has been technically revised.

INTERNATIONAL STANDARD ISO 3954:2007(E)

Powders for powder metallurgical purposes — Sampling
1 Scope
This International Standard specifies procedures for the sampling of powders for powder metallurgical
purposes.
lt also covers the splitting of the sample into the quantity required for testing.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply (see also Figure 1).
2.1
lot
quantity of powder processed or produced under conditions that are presumed uniform
2.2
increment
quantity of powder obtained by a sampling device at one time from a single lot
2.3
gross sample
quantity of powder, adequate for the tests to be performed, consisting of all the increments taken from a single
lot
2.4
composite sample
blended entire gross sample or part thereof
NOTE 1 Alternatively, it may be obtained by splitting the lot.
NOTE 2 However it is obtained, it is essential that it be thoroughly blended.
2.5
test sample
quantity of powder taken from the composi
...