SIST EN 60404-14:2004

SLOVENSKI SIST EN 60404-14:2004

STANDARD
julij 2004
Magnetic materials - Part 14: Methods of measurement of the magnetic dipole
moment of a ferromagnetic material specimen by the withdrawal or rotation method
(IEC 60404-14:2002)
ICS 17.220.20; 29.030 Referenčna številka
SIST EN 60404-14:2004(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 60404-14
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2002

ICS 17.220.20; 29.030


English version


Magnetic materials
Part 14: Methods of measurement of the magnetic dipole moment
of a ferromagnetic material specimen
by the withdrawal or rotation method
(IEC 60404-14:2002)


Matériaux magnétiques Magnetische Werkstoffe
Partie 14: Méthode de mesure du moment Teil 14: Verfahren zur Messung
magnétique coulombien d'une éprouvette des magnetischen Dipolmomentes
de matériau ferromagnétique einer Probe aus ferromagnetischem
par la méthode du retrait Werkstoff mit dem Abzieh-
ou la méthode par rotation oder dem Drehverfahren
(CEI 60404-14:2002) (IEC 60404-14:2002)





This European Standard was approved by CENELEC on 2002-10-01. CENELEC 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 Central Secretariat or to any CENELEC 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 CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60404-14:2002 E

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EN 60404-14:2002 - 2 -
Foreword
The text of document 68/254/FDIS, future edition 1 of IEC 60404-14, prepared by IEC TC 68, Magnetic
alloys and steels, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60404-14 on 2002-10-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
 at national level by publication of an identical
 national standard or by endorsement (dop) 2003-07-01
– latest date by which the national standards conflicting
 with the EN have to be withdrawn (dow) 2005-10-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A, B and C are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60404-14:2002 was approved by CENELEC as a European
Standard without any modification.
__________

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- 3 - EN 60404-14:2002
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1)
IEC 60050-121 - International Electrotechnical - -
Vocabulary
Part 121: Electromagnetism

1)
IEC 60050-151 - Part 151: Electrical and magnetic - -
devices

1)
IEC 60050-221 - Chapter 221: Magnetic materials and - -
components

1) 2)
IEC 60404-4 - Magnetic materials EN 60404-4 1997
Part 4: Methods of measurement of d.c.
magnetic properties of magnetically soft
materials

1)
IEC 60404-5 - Part 5: Permanent magnet (magnetically - -
hard) materials - Methods of
measurement of magnetic properties

1)
IEC 60404-7 - Part 7: Method of measurement of the - -
coercivity of magnetic materials in an
open magnetic circuit

1)
ISO Guide - Guide to the expression of uncertainty - -
in measurement





1)
Undated reference.
2)
Valid edition at date of issue.

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NORME CEI
INTERNATIONALE IEC
60404-14
INTERNATIONAL
Première édition
STANDARD
First edition
2002-06
Matériaux magnétiques –
Partie 14:
Méthode de mesure du moment magnétique
coulombien d'une éprouvette de matériau
ferromagnétique par la méthode du retrait
ou la méthode par rotation
Magnetic materials –
Part 14:
Methods of measurement of the magnetic dipole
moment of a ferromagnetic material specimen
by the withdrawal or rotation method
© IEC 2002 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
CODE PRIX
N
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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60404-14 © IEC:2002 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.7
1 Scope.9
2 Normative references .9
3 Definitions .11
4 General principle of measurement .11
5 Test specimen .13
6 Detection coil .13
7 Magnetic flux integrator .13
8 Measurement of the magnetic dipole moment of magnetized material.15
8.1 Correction of integrator readings for loading effects
with no integrator calibration .15
8.2 Circuit configuration for measurement when the integrator is calibrated using
a mutual inductor.15
8.3 Calibration of the measuring device for the magnetic dipole moment
by means of a calibrated permanent magnet sample .17
8.4 Withdrawal method.17
8.5 Rotation method.17
9 Determination of the saturation value of the magnetic dipole moment.19
10 Determination of the magnetic polarization J .19
11 Determination of the specific saturation magnetic polarization σ .19
s
12 Calibration of the measuring device for the saturation value of the magnetic dipole
moment .21
13 Uncertainty of measurement.21
14 Test report.21
Annex A (informative) Measurement of the specific saturation magnetic polarization of
test specimen longer than the homogenous area of the Helmholtz coil.23
Annex B (informative) Measurement of ferromagnetic specimens with high saturation
magnetic field, e.g. a hardmetal specimen with high cobalt content.25
Annex C (informative) Measurement of a test specimen with a small mass,
e.g. a hardmetal specimen of a cobalt content less than 50 mg.27
Figure 1 – Circuit for measurement of magnetic dipole moment .15
Figure 2 – Ironless magnet arrangement.19
Figure 3 – O-yoke magnet arrangement.19

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60404-14 © IEC:2002 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MAGNETIC MATERIALS –
Part 14: Methods of measurement of the magnetic
dipole moment of a ferromagnetic material specimen
by the withdrawal or rotation method
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60404-14 has been prepared by IEC technical committee 68:
Magnetic alloys and steels.
The text of this standard is based on the following documents:
FDIS Report on voting
68/254/FDIS 68/257/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
Annexes A, B and C are for information only.
The committee has decided that the contents of this publication will remain unchanged until 2009.
At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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60404-14 © IEC:2002 – 7 –
INTRODUCTION
The magnetic dipole moment j of a ferromagnetic material specimen is a useful parameter for
comparing properties, particularly of permanent magnet materials. The measurement of the
saturation magnetic dipole moment per unit mass (specific saturation magnetic polarization
σ ) is a special case widely used to characterize cemented carbide metals. Whilst these
s
materials are essentially non-magnetic in character, cobalt or nickel is used as the binder and
it is required to achieve an optimum composition and geometrical arrangement of the binder
phase with high reproducibility. The determination of the specific saturation magnetic
polarization has gained acceptance in the carbide metal industry as a simple, fast and non-
destructive measurement method.
The measurement of magnetic moment is, within broad limits, independent of the shape and
size of the test specimen. If the material, as in the case of cemented carbide metal, contains
only one ferromagnetic component (cobalt or nickel), it is possible to determine its percentage
proportion with high resolution.
Another useful parameter which can be derived from the measurement of the magnetic dipole
moment of a test specimen and its volume V is the magnetic polarization J. The value of
saturation magnetic polarization is of particular interest for certain magnetic materials.
Spherical, ellipsoidal and cylindrical reference specimens of nickel of measured saturation
magnetic polarization are used in the calibration of vibrating sample magnetometers.

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60404-14 © IEC:2002 – 9 –
MAGNETIC MATERIALS –
Part 14: Methods of measurement of the magnetic
dipole moment of a ferromagnetic material specimen
by the withdrawal or rotation method
1 Scope
This part of IEC 60404 is applicable to all ferromagnetic materials. It is particularly aimed at
the measurement of the magnetic dipole moment of permanent magnet (magnetically hard)
materials and the measurement of the specific saturation magnetic polarization of cemented
carbide materials having a ferromagnetic binder.
The object of this part is to describe the general principles of the determination of the
magnetic dipole moment of a ferromagnetic material specimen using a detection coil in an
open magnetic circuit. By including a means of magnetizing the material to saturation, the
saturation magnetic dipole moment can also be determined. In addition, the average
magnetic polarization of a test specimen can be derived from the measurement of its
magnetic dipole moment and volume. The calibration of magnetic moment coil systems
and the measurement of the magnetic dipole moment of feebly magnetic materials can
also be determined using this method.
Measurements are normally performed at room temperature but measurements at other
temperatures can be conducted by heating or cooling the volume occupied by the test
specimen within the detection coil.
The measurement of remanence, coercivity, maximum energy product and other parameters
can be made in a closed magnetic circuit as described in IEC 60404-4 and IEC 60404-5.
Measurement of the coercivity H of soft and semi-hard materials can also be performed in
cJ
an open circuit as described in IEC 60404-7.
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.
IEC 60050(121), International Electrotechnical Vocabulary (IEV) – Part 121: Electro-
magnetism
IEC 60050(151), International Electrotechnical Vocabulary (IEV) – Part 151: Electrical and
magnetic devices
IEC 60050(221), International Electrotechnical Vocabulary (IEV) – Chapter 221: Magnetic
m
...