1、BSI Standards PublicationMagnetic materialsPart 8-1: Specifications for individual materials Magnetically hard materialsBS EN 60404-8-1:2015National forewordThis British Standard is the UK implementation of EN 60404-8-1:2015. It isidentical to IEC 60404-8-1:2015. It supersedes BS 6404-8.1:2001 which
2、 iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/108, Magnetic Alloys and Steels.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa
3、contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 82869 0ICS 17.220.20; 29.030Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published un
4、der the authority of theStandards Policy and Strategy Committee on 30 June 2015.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60404-8-1:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60404-8-1 May 2015 ICS 29.030; 17.220.20 English Version Magnetic m
5、aterials - Part 8-1: Specifications for individual materials - Magnetically hard materials (IEC 60404-8-1:2015) Matriaux magntiques - Partie 8-1: Spcifications pour matriaux particuliers - Matriaux magntiquement durs (IEC 60404-8-1:2015) Magnetische Werkstoffe - Teil 8-1: Anforderungen an einzelne W
6、erkstoffe - Hartmagnetische Werkstoffe (Dauermagnete) (IEC 60404-8-1:2015) This European Standard was approved by CENELEC on 2015-05-01. 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 nati
7、onal 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 CENELEC member. This European Standard exists in three official versions (English, French, German). A
8、 version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulg
9、aria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer
10、land, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation in an
11、y form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60404-8-1:2015 E BS EN 60404-8-1:2015EN 60404-8-1:2015 - 2 - Foreword The text of document 68/495/FDIS, future edition 3 of IEC 60404-8-1, prepared by IEC/TC 68 “Magnetic alloys and steels“ was submitted to the IEC-CENELEC p
12、arallel vote and approved by CENELEC as EN 60404-8-1:2015. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2016-02-01 latest date by which the national standards conflict
13、ing with the document have to be withdrawn (dow) 2018-05-01 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The tex
14、t of the International Standard IEC 60404-8-1:2015 was approved by CENELEC as a European Standard without any modification. BS EN 60404-8-1:2015- 3 - EN 60404-8-1:2015 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following
15、 documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 When an Inter
16、national Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 60050 series In
17、ternational electrotechnical vocabulary - - IEC 60404-5 - Magnetic materials - Part 5: Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties - - BS EN 60404-8-1:2015 2 IEC 60404-8-1:2015 IEC 2015 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative re
18、ferences. 7 3 Terms and definitions 7 4 Types of materials and their applications 7 5 Classification . 8 5.1 General . 8 5.2 Principal magnetic properties 8 5.3 Additional magnetic properties . 9 6 Chemical composition 10 7 Densities . 10 8 Designation . 10 9 Mode of shipment and dimensions . 10 10
19、Testing 10 10.1 Extent of testing 10 10.2 Testing methods . 10 11 Grounds for rejection . 11 12 Description of tables of standard properties 11 12.1 Magnetically hard alloys 11 12.1.1 Aluminium-nickel-cobalt-iron-titanium alloys (AINiCo) . 11 12.1.2 Chromium-iron-cobalt alloys (CrFeCo) 12 12.1.3 Iro
20、n-cobalt-vanadium-chromium alloys (FeCoVCr) . 12 12.1.4 Rare earth-cobalt alloys (RECo) 13 12.1.5 Rare earth-iron-boron alloys (REFeB) . 14 12.2 Magnetically hard ceramics (magnetically hard ferrites) 14 12.2.1 Chemical composition . 14 12.2.2 Manufacturing method . 15 12.2.3 Sub-classification 15 1
21、2.2.4 Magnetic properties and densities 15 12.2.5 Dimensional tolerances 15 12.3 Bonded magnets . 15 12.3.1 General . 15 12.3.2 Chemical composition 15 12.3.3 Manufacturing method . 16 12.3.4 Sub-classification 16 12.3.5 Magnetic properties and densities 17 12.3.6 Dimensional tolerances 17 13 Irreve
22、rsible demagnetization behaviour 17 13.1 General . 17 13.2 General definition of demagnetization field strength HD. 18 13.3 Simplified definition of demagnetization field strength HD. 18 14 Tables 10 to 23 20 Annex A (informative) Physical data and mechanical reference values of AINiCo, CrFeCo, FeCo
23、VCr, SmCo, NdFeB, hard ferrite and bonded SmFeN magnets . 34 BS EN 60404-8-1:2015IEC 60404-8-1:2015 IEC 2015 3 Bibliography . 36 Figure 1 Graphic representation of B(H) and J(H) demagnetization and recoil curves . 19 Figure 2 Simplified evaluation of B(H) and J(H) demagnetization and recoil curves 2
24、0 Table 1 Classification of magnetically hard materials 8 Table 2 Magnetic properties Symbols and units9 Table 3 Additional magnetic properties Symbols and units 9 Table 4 Chemical compositions of AlNiCo alloys (% mass fraction) . 11 Table 5 Chemical compositions of CrFeCo alloys (% mass fraction) .
25、 12 Table 6 Chemical compositions of FeCoVCr alloys (% mass fraction) . 12 Table 7 Chemical compositions of RECo alloys (% mass fraction) . 13 Table 8 Chemical compositions of REFeB alloys (% mass fraction) 14 Table 9 Chemical compositions of REFeN alloys for bonded magnet (% mass fraction) . 16 Tab
26、le 10 Magnetic properties and densities of AlNiCo magnets . 21 Table 11 Magnetic properties and densities of CrFeCo and FeCoVCr magnets 22 Table 12 Magnetic properties and densities of RECo magnets 23 Table 13 Magnetic properties and densities of REFeB magnets 24 Table 14 Magnetic properties and den
27、sities of hard ferrites . 25 Table 15 Magnetic properties and densities of isotropic AlNiCo alloys with organic binder . 26 Table 16 Magnetic properties and densities of RECo alloys with organic binder . 27 Table 17 Magnetic properties and densities of isotropic REFeB alloys with organic binder . 28
28、 Table 18 Magnetic properties and densities of isotropic and anisotropic hard ferrites with organic binder . 29 Table 19 Magnetic properties and densities of anisotropic REFeN alloys with organic binder . 30 Table 20 Dimensional tolerances (as cast or as sintered) of magnets made from AlNiCo alloys
29、31 Table 21 Dimensional tolerances of cold rolled strips of FeCoVCr and CrFeCo alloys with a maximum thickness of 6 mm and maximum width of 125 mm . 32 Table 22 Dimensional tolerances of the diameter of cold drawn wires and bars of FeCoVCr and CrFeCo alloys . 32 Table 23 Dimensional tolerances on ma
30、gnets made from hard ferrites 33 Table A.1 Physical data and mechanical reference values of AlNiCo, CrFeCo, FeCoVCr, SmCo, NdFeB, hard ferrite and bonded SmFeN magnets . 35 BS EN 60404-8-1:2015 4 IEC 60404-8-1:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MAGNETIC MATERIALS Part 8-1: Spe
31、cifications for individual materials Magnetically hard materials FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote internationa
32、l co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter refer
33、red to as “IEC Publication(s)”). 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
34、this preparation. 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 IEC on technical matters express, as nearly as possible, an internati
35、onal consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable
36、 efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publ
37、ications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity.
38、 Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7
39、) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for co
40、sts (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct appli
41、cation of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60404-8-1 has been prepared by IEC t
42、echnical committee 68: Magnetic alloys and steels. This third edition cancels and replaces the second edition published in 2001 and Amendment 1:2004. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
43、 a) recently developed anisotropic Sm-Fe-N bonded magnets are included; b) high energy ferrites with La and Co as substituents are included. BS EN 60404-8-1:2015IEC 60404-8-1:2015 IEC 2015 5 The text of this standard is based on the following documents: FDIS Report on voting 68/495/FDIS 68/503/RVD F
44、ull 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 2. A list of all parts in the IEC 60404 series, published under the general title Magne
45、tic materials, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication wi
46、ll be reconfirmed, withdrawn, replaced by a revised edition, or amended. BS EN 60404-8-1:2015 6 IEC 60404-8-1:2015 IEC 2015 INTRODUCTION This third edition of IEC 60404-8-1 includes the recently developed anisotropic Sm-Fe-N bonded magnets and high energy ferrites with La and Co as substituents whic
47、h have become established in permanent magnet applications. It also includes corrections to the second edition in order to improve consistency with IEC 60404-5. The squareness of the demagnetization curve is introduced through the quantity HD. BS EN 60404-8-1:2015IEC 60404-8-1:2015 IEC 2015 7 MAGNET
48、IC MATERIALS Part 8-1: Specifications for individual materials Magnetically hard materials 1 Scope This part of IEC 60404 specifies minimum values for the principal magnetic properties of, and dimensional tolerances for, technically important magnetically hard materials (permanent magnets). For info
49、rmation purposes only, this part of IEC 60404 provides values for the densities of the materials and the ranges of their chemical compositions. NOTE Some additional physical data and mechanical reference values concerning the magnetic materials are given in Table A.1 for information and comparison purposes. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable fo
