Bsi bs en 60404 8 1 2015

BS EN 60404-8-1:2015 BSI Standards Publication Magnetic materials Part 8-1: Specifications for individual materials — Magnetically hard materials BRITISH STANDARD BS EN 60404-8-1:2015 National foreword This British Standard is the UK implementation of EN 60404-8-1:2015 It is identical to IEC 60404-8-1:2015 It supersedes BS 6404-8.1:2001 which is withdrawn The UK participation in its preparation was entrusted to Technical Committee ISE/108, Magnetic Alloys and Steels A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © The British Standards Institution 2015 Published by BSI Standards Limited 2015 ISBN 978 580 82869 ICS 17.220.20; 29.030 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2015 Amendments/corrigenda issued since publication Date Text affected BS EN 60404-8-1:2015 EUROPEAN STANDARD EN 60404-8-1 NORME EUROPÉENNE EUROPÄISCHE NORM May 2015 ICS 29.030; 17.220.20 English Version Magnetic materials - Part 8-1: Specifications for individual materials - Magnetically hard materials (IEC 60404-8-1:2015) Matériaux magnétiques - Partie 8-1: Spécifications pour matériaux particuliers - Matériaux magnétiquement durs (IEC 60404-8-1:2015) Magnetische Werkstoffe - Teil 8-1: Anforderungen an einzelne Werkstoffe - 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 national 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 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, Bulgaria, 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, Switzerland, Turkey and the United Kingdom European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels © 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members Ref No EN 60404-8-1:2015 E BS EN 60404-8-1:2015 EN 60404-8-1:2015 -2- Foreword The text of document 68/495/FDIS, future edition of IEC 60404-8-1, prepared by IEC/TC 68 "Magnetic alloys and steels" was submitted to the IEC-CENELEC parallel 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 conflicting 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 text 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 EN 60404-8-1:2015 -3- Annex ZA (normative) Normative references to international publications with their corresponding European publications The following 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 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies NOTE 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 International electrotechnical vocabulary - - IEC 60404-5 - Magnetic materials Part 5: Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties - - –2– BS EN 60404-8-1:2015 IEC 60404-8-1:2015 © IEC 2015 CONTENTS FOREWORD INTRODUCTION Scope Normative references Terms and definitions Types of materials and their applications Classification 5.1 General 5.2 Principal magnetic properties 5.3 Additional magnetic properties Chemical composition 10 Densities 10 Designation 10 Mode of shipment and dimensions 10 10 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 Iron-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 12.2.4 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 Irreversible demagnetization behaviour 17 13.1 General 17 13.2 General definition of demagnetization field strength H D 18 13.3 Simplified definition of demagnetization field strength H D 18 14 Tables 10 to 23 20 Annex A (informative) Physical data and mechanical reference values of AINiCo, CrFeCo, FeCoVCr, SmCo, NdFeB, hard ferrite and bonded SmFeN magnets 34 BS EN 60404-8-1:2015 IEC 60404-8-1:2015 © IEC 2015 –3– Bibliography 36 Figure – Graphic representation of B(H) and J(H) demagnetization and recoil curves 19 Figure – Simplified evaluation of B(H) and J(H) demagnetization and recoil curves 20 Table – Classification of magnetically hard materials Table – Magnetic properties — Symbols and units Table – Additional magnetic properties — Symbols and u n i t s Table — Chemical compositions of AlNiCo alloys (% mass fraction) 11 Table — Chemical compositions of CrFeCo alloys (% mass fraction) 12 Table — Chemical compositions of FeCoVCr alloys (% mass fraction) 12 Table – Chemical compositions of RECo alloys (% mass fraction) 13 Table – Chemical compositions of REFeB alloys (% mass fraction) 14 Table – Chemical compositions of REFeN alloys for bonded magnet (% mass fraction) 16 Table 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 densities 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 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 31 Table 21 – Dimensional tolerances of cold rolled strips of FeCoVCr and CrFeCo alloys with a maximum thickness of 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 magnets 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 –4– BS EN 60404-8-1:2015 IEC 60404-8-1:2015 © IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION MAGNETIC MATERIALS – Part 8-1: Specifications 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 international 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 referred 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 nongovernmental organizations liaising with the IEC also participate in 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 international 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 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 Publications 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 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) 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 costs (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 application 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 technical 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: 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 60404-8-1:2015 IEC 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 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 A list of all parts in the IEC 60404 series, published under the general title Magnetic 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 will be • reconfirmed, • withdrawn, • replaced by a revised edition, or • amended –6– BS EN 60404-8-1:2015 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 which 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 H D a a a a a a a a a a a a a a a REFeB 250/120 REFeB 290/80 REFeB 200/190 REFeB 240/180 REFeB 280/120 REFeB 320/88 REFeB 210/240 REFeB 240/200 REFeB 310/130 REFeB 250/240 REFeB 260/200 REFeB 340/130 REFeB 360/90 REFeB 380/100 Sintered mT kJ/m3 380 360 340 260 250 310 240 210 320 280 240 200 290 250 210 170 H cB Br (BH) max a a = anisotropic Maximum operating temperature: 200 °C Curie temperature: 310 °C Temperature coefficient of coercivity α(H cJ ) = −0,45 %/°C to −0,6 %/°C (for 20 °C to 100 °C) 420 350 330 210 200 300 160 060 310 240 160 060 230 130 060 980 990 800 920 840 830 900 840 760 800 900 840 760 700 840 790 700 Specified minimum values kA/m Coercivity Remanent flux density 000 900 300 000 400 300 000 400 880 200 800 900 800 200 300 900 kA/m H cJ Coercivity Magnetic properties Maximum BH product Temperature coefficient of remanence α(B r ) = −0,1 %/°C to −0,12 %/°C (for 20 °C to 100 °C) R7-1-16 R7-1-15 R7-1-14 R7-1-13 R7-1-12 R7-1-11 R7-1-10 R7-1-9 R7-1-8 R7-1-7 R7-1-6 R7-1-5 R7-1-4 R7-1-3 R7-1-2 R7-1-1 Code number Manufacturing 1,05 ρ Mg/m 7,7 to 7,5 Typical values µ rec Relative recoil permeability Density – 24 – Typical values of the parameters: a REFeB 210/130 REFeB Magnetic anisotropy a REFeB 170/190 Brief designation Material Table 13 – Magnetic properties and densities of REFeB magnets BS EN 60404-8-1:2015 IEC 60404-8-1:2015 © IEC 2015 a Hard ferrite 35/25 S1-1-19 S1-1-18 S1-1-17 S1-1-16 S1-1-15 S1-1-14 S1-1-13 S1-1-12 S1-1-11 S1-1-10 S1-1-9 S1-1-8 S1-1-7 S1-1-6 S1-1-5 S1-1-4 S1-1-3 S1-1-2 S1-1-1 S1-0-2 S1-0-1 Code number Sintered Manufacturing mT kJ/m 39 41 33 36 38 35 31 25 29 24 32 32 29 26 22 26 25 24 20 6,5 6,5 H cB Br (BH) max 460 470 420 440 450 430 410 380 400 360 410 410 390 370 350 370 380 350 320 190 190 Specified minimum values 340 320 300 320 260 245 295 275 145 260 240 160 210 230 255 175 130 215 170 120 125 kA/m Coercivity Remanent flux density Magnetic properties Maximum BH product Temperature coefficient of remanence α(B r ) = −0,2 %/°C (for 20 °C to 100 °C) Typical values of the parameters: a a Hard ferrite 31/30 b a Hard ferrite 25/38 Hard ferrite 39/39 a Hard ferrite 29/15 a a Hard ferrite 24/35 a a Hard ferrite 32/25 b a Hard ferrite 32/17 Hard ferrite 41/34 a Hard ferrite 29/22 Hard ferrite 33/38 a Hard ferrite 26/26 b a Hard ferrite 22/30 a a Hard ferrite 26/18 a a Hard ferrite 25/14 b a Hard ferrite 24/23 Hard ferrite 36/34 a Hard ferrite 20/19 Hard ferrite 38/27 i b i Hard ferrite 7/25 Hard ferrite Magnetic anisotropy a Hard ferrite 7/21 Brief designation Material Table 14 – Magnetic properties and densities of hard ferrites 390 340 380 340 270 250 300 380 150 350 250 165 220 260 295 180 135 230 190 250 210 kA/m H cJ Coercivity 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,2 1,2 Typical values µ rec Relative recoil permeability 5,1 5,1 5,0 5,0 5,0 4,95 4,95 4,95 5,0 4,8 4,9 4,9 4,8 4,7 4,6 5,0 5,0 4,8 4,8 4,9 4,9 Mg/m ρ Density IEC 60404-8-1:2015 © IEC 2015 BS EN 60404-8-1:2015 – 25 – Temperature coefficient of coercivity α(H cJ ) = 0,25 %/°C to 0,4 %/°C (for 20 °C to 100 °C) i i AlNiCo 5/6p AlNiCo 7/8p Compression moulding Manufacturing mT kJ/m 7,0 5,2 3,1 H cB Br (BH) max a i = isotropic Continuous operating temperature: depending on binder Curie temperature: 750 °C to 850 °C Temperature coefficient of coercivity α(H cJ ) = −0,03 %/°C to −0,07 %/°C (for 20 °C to 100 °C) 340 320 280 72 46 37 Specified minimum values kA/m Coercivity Magnetic properties Remanent flux density Maximum BH product Temperature coefficient of remanence α(B r ) = −0,02 %/°C (for 20 °C to 100 °C) U1-0-32 U1-0-31 U1-0-30 Code number Table 15 – Magnetic properties and densities of isotropic AlNiCo alloys with organic binder 84 56 46 kA/m H cJ Coercivity 2,5 2,5 2,5 5,5 5,4 5,3 Mg/m ρ Density Typical values µ rec Relative recoil permeability – 26 – Typical values of the parameters: i AlNiCo 3/5p AlNiCo p Magnetic anisotropya Material These grades have substitutions of La and Co b Brief designation i = isotropic, a = anisotropic a Maximum operating temperature: 250 °C Curie temperature: 450 °C The La, Co grades (see b) have α(H cJ ) = 0,11 %/°C to 0,24 %/°C (for 20 °C to 100 °C) BS EN 60404-8-1:2015 IEC 60404-8-1:2015 © IEC 2015 a i i a a a a RECo 68/60p RE Co 17 20/60p RE Co 17 30/80p RE Co 17 40/60p RE Co 17 65/70p RE Co 17 75/55p RE Co 17 110/75p U2-1-35 U2-1-27 U2-1-26 U2-1-25 U2-0-35 U2-0-25 U2-1-21 U2-1-20 Code number Compression moulding Injection moulding Compression moulding Injection moulding Manufacturing mT kJ/m 110 75 65 40 30 20 68 52 H cB Br (BH) max Temperature coefficient of coercivity α(H cJ ) = −0,3 %/°C (for 20 °C to 100 °C) a i = isotropic; a = anisotropic Continuous operating temperature: depending on binder Curie temperature: 820 °C Temperature coefficient of coercivity α(H cJ ) = −0,25 %/°C (for 20 °C to 100°C) Temperature coefficient of remanence α(B r ) = −0,03 %/°C (for 20 °C to 100°C) RE Co 17 Continuous operating temperature: depending on binder Curie temperature: 720 °C 780 650 610 480 430 350 620 570 480 440 360 300 300 200 380 330 Specified minimum values kA/m Coercivity 750 550 700 600 800 600 600 520 kA/m H cJ Coercivity Magnetic properties Remanent flux density Maximum BH product Temperature coefficient of remanence α(B r ) = −0,04 %/°C (for 20 °C to 100 °C) RECo Typical values of the parameters: a RECo p Magnetic anisotropy a Material RECo 52/52p Brief designation Table 16 – Magnetic properties and densities of RECo alloys with organic binder 1,05 1,05 1,05 1,05 1,15 1,15 1,1 1,1 6,8 5,7 5,5 5,3 6,8 5,6 5,7 5,6 Mg/m ρ Density Typical values µ rec Relative recoil permeability IEC 60404-8-1:2015 © IEC 2015 BS EN 60404-8-1:2015 – 27 – i i i i i i i i i i i REFeB 26/90p REFeB 30/90p REFeB 40/70p REFeB 45/70p REFeB 50/70p REFeB 72/64p REFeB 40/100p REFeB 63/64p REFeB 53/95p REFeB 82/68p Compres-sion moulding Injection moulding Manufacturing mT kJ/m 82 53 63 40 72 50 45 40 30 26 33 28 H cB Br (BH) max a i = isotropic Maximum operating temperature: 120 °C Curie temperature of the REFeB alloy: 310 °C Temperature coefficient of coercivity α(H cJ ) = −0,4 %/°C (for 20 °C to 100 °C) 700 560 630 480 650 550 510 470 440 400 470 430 500 350 360 330 370 380 350 320 280 270 290 270 Specified minimum values kA/m Coercivity Magnetic properties Remanent flux density Maximum BH product Temperature coefficient of remanence α(B r ) = −0,1 %/°C to −0,15 %/°C (for 20 °C to 100 °C) U3-0-32 U3-0-31 U3-0-30 U3-0-28 U3-0-27 U3-0-26 U3-0-25 U3-0-24 U3-0-23 U3-0-22 U3-0-21 U3-0-20 Code number 680 950 640 000 640 700 700 700 900 900 560 560 kA/m H cJ Coercivity Mg/m 1,25 1,15 1,25 1,15 1,25 1,25 1,25 1,25 1,15 1,15 1,25 1,25 ρ Density 6,2 5,8 5,8 5,3 6,0 5,7 5,7 5,0 4,6 4,2 4,6 4,2 Typical values µ rec Relative recoil permeability – 28 – Typical values of the parameters: i REFeB 33/56p REFeB p Magnetic anisotropya Material REFeB 28/56p Brief designation Table 17 – Magnetic properties and densities of isotropic REFeB alloys with organic binder BS EN 60404-8-1:2015 IEC 60404-8-1:2015 © IEC 2015 i i i a a a a a a a Hard ferrite 1/18p Hard ferrite 3/18p Hard ferrite 4/22p Hard ferrite 7/18p Hard ferrite 9/17p Hard ferrite 11/24p Hard ferrite 15/24p Hard ferrite 8/19p Hard ferrite 12/23p Hard ferrite 15/21p U4-1-22 U4-1-21 U4-1-20 U4-1-13 U4-1-12 U4-1-11 U4-1-10 U4-0-22 U4-0-21 U4-0-20 U4-0-10 Code number Injection moulded Extrusion or calendering Injection moulding Extrusion Manufacturing mT kJ/m 15 12 7,5 14,5 11 6,5 3,5 3,2 0,8 3,2 H cB Br (BH) max a i = isotropic; a = anisotropic Continuous operating temperature: depending on binder Curie temperature: 450 °C 280 250 210 275 240 215 185 145 135 70 130 180 170 120 190 170 145 110 110 85 50 85 Specified minimum values kA/m Coercivity Remanent flux density Magnetic properties Maximum BH product Temperature coefficient of coercivity α(H cJ ) = 0,25 %/°C to 0,4 %/°C (for 20 °C to 100 °C) Temperature coefficient of remanence α(B r ) = −0,2 %/°C (for 20 °C to 100 °C) Typical values of the parameters: i Hard ferrite p Magnetic anisotropy a Hard ferrite 3/16p Brief designation Material 210 230 185 240 240 170 175 215 175 175 160 kA/m H cJ Coercivity 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,1 1,15 3,7 3,5 3,2 3,8 3,7 3,6 3,6 3,8 3,8 2,3 3,8 Mg/m ρ Density Typical values µ rec Relative recoil permeability Table 18 – Magnetic properties and densities of isotropic and anisotropic hard ferrites with organic binder IEC 60404-8-1:2015 © IEC 2015 BS EN 60404-8-1:2015 – 29 – a a REFeN 100/66 p U5-1-22 U5-1-21 U5-1-20 Code number Injection moulding Manufacturing a a = anisotropic Continuous operating temperature: depending on binder Curie temperature: 476 °C Temperature coefficient of coercivity α(H cJ ) = −0,50 %/°C (for 20 °C to 100 °C) Temperature coefficient of remanence α(B r ) = −0,07 %/°C (for 20 °C to 100 °C) Typical values of the parameters: a REFeN 91/63 p REFeN p Magnetic anisotropya REFeN 75/70 p Brief designation Material 100 91 75 mT kJ/m 760 690 640 470 450 430 Specified minimum values 660 630 700 kA/m H cJ H cB Br (BH) max kA/m Coercivity Coercivity Remanent flux density Maximum BH product Magnetic properties Mg/m 1,1 ρ Density 4,7 4,4 4,2 Typical values µ rec Relative recoil permeability Table 19 – Magnetic properties and densities of anisotropic REFeN alloys with organic binder BS EN 60404-8-1:2015 – 30 – IEC 60404-8-1:2015 © IEC 2015 BS EN 60404-8-1:2015 IEC 60404-8-1:2015 © IEC 2015 – 31 – Table 20 – Dimensional tolerances (as cast or as sintered) of magnets made from AlNiCo alloys Values in millimetres Nominal value Sintered alloys with ≤ % Ti greater than Perpendicular to the compacting direction In compacting direction Perpendicular to the compacting direction In compaction direction Sand casting Shell moulded casting ± ± ± ± ± ± 0,15 0,20 0,20 0,25 0,40 0,25 0,20 0,25 0,25 0,30 0,40 0,25 0,20 0,25 0,25 0,30 0,40 0,25 up to Cast alloys Sintered alloys with > % Ti 10 0,20 0,30 0,30 0,35 0,45 0,25 10 13 0,25 0,30 0,30 0,35 0,50 0,30 13 16 0,25 0,35 0,35 0,45 0,50 0,30 16 20 0,30 0,35 0,40 0,45 0,55 0,40 20 25 0,30 0,40 0,45 0,55 0,60 0,50 25 30 0,35 0,40 0,50 0,60 0,65 0,50 30 35 0,40 0,50 0,55 0,70 0,70 0,60 35 40 0,45 0,55 0,65 0,75 0,75 0,60 40 45 0,50 0,60 0,70 0,80 0,80 0,70 45 50 0,50 0,65 0,75 0,90 0,80 0,70 50 55 0,55 0,70 0,80 1,00 1,00 0,80 55 60 0,60 0,80 0,90 1,10 1,00 0,80 60 70 – – – – 1,00 0,80 70 80 – – – – 1,00 0,80 80 90 – – – – 1,10 0,80 90 100 – – – – 1,20 0,80 BS EN 60404-8-1:2015 IEC 60404-8-1:2015 © IEC 2015 – 32 – Table 21 – Dimensional tolerances of cold rolled strips of FeCoVCr and CrFeCo alloys with a maximum thickness of mm and maximum width of 125 mm Values in millimetres Thickness (max mm) Range of thickness Width (max 125 mm) Dimensional tolerance of thickness b from to less than 0,10 0,15 0,010 0,15 0,40 0,40 1,00 Stage of grades Range of thickness Dimensional tolerance of width from to less than Cut 0,10 0,40 +0,3 0,020 Cut 0,40 1,50 +0,4 0,030 Cut 1,50 2,50 +0,6 +0,8 —–— ± 1,00 1,50 0,040 Cut 2,50 6,00 a 1,50 2,50 0,050 —–— —–— —–— 2,50 4,00 0,060 4,00 6,00 a 0,080 Natural (as rolled) 0,3 6,00 a +3,0 a Including mm b Thickness may be measured at any point of the strip at a distance of at least 20 mm from the edges For width less than or equal to 40 mm the measurementshall be performed in the middle of the strip Table 22 – Dimensional tolerances of the diameter of cold drawn wires and bars of FeCoVCr and CrFeCo alloys Values in millimetres Range of diameter from to less than Dimensional tolerance on diameter ± 0,25 0,01 0,25 0,40 0,015 0,40 0,63 0,02 0,63 1,0 0,03 1,0 1,6 0,04 1,6 2,5 0,06 2,5 4,0 0,08 4,0 6,3 0,10 6,3 10,0 0,15 10,0 16,0 0,20 16,0 20,0 (value included) 0,25 0,10 0,15 0,15 0,15 0,20 0,20 0,25 0,30 0,40 0,45 0,55 0,70 0,30 0,35 0,45 0,55 0,40 0,40 0,45 0,55 0,30 0,30 0,35 0,40 13 16 20 25 30 35 40 45 50 55 60 70 80 90 100 10 13 16 20 25 30 35 40 45 50 55 60 70 80 90 3,00 2,70 2,40 2,10 1,80 1,65 1,30 1,15 1,00 0,85 0,70 Wet compacted hard ferrites shall be ground on the pole surface in every case 1,90 1,70 1,50 1,30 1,15 1,05 0,95 0,85 0,75 0,65 0,55 2,40 2,15 1,90 1,65 1,45 1,30 1,20 1,10 0,95 0,80 0,70 – – – – – – – 1,35 1,20 1,00 0,90 – – – 0,70 0,60 0,55 0,50 0,50 0,45 0,40 0,35 – – – 0,35 0,30 0,30 0,25 0,25 0,25 0,20 0,20 IEC 60404-8-1:2015 © IEC 2015 a 0,10 0,15 0,40 0,10 0,10 0,30 0,15 0,15 0,40 0,40 0,40 0,30 0,25 0,25 0,10 ± Injection moulded or pressed 10 0,40 0,40 0,15 ± Extruded or rolled 0,25 0,25 0,40 ± In compacting a direction 0,25 ± Perpendicular to the compacting direction Hard ferrites with binder 0,40 ± ± 0,25 In compacting direction Perpendicular to the compacting direction Anisotropic hard ferrites up to Isotropic hard ferrites Values in millimetres greater than Nominal value Table 23 – Dimensional tolerances on magnets made from hard ferrites BS EN 60404-8-1:2015 – 33 – – 34 – BS EN 60404-8-1:2015 IEC 60404-8-1:2015 © IEC 2015 Annex A (informative) Physical data and mechanical reference values of AINiCo, CrFeCo, FeCoVCr, SmCo, NdFeB, hard ferrite and bonded SmFeN magnets Table A.1 gives some physical and mechanical data for different groups of magnetically hard materials These include AINiCo, CrFeCo, FeCoVCr, SmCo, NdFeB, hard ferrite and bonded SmFeN magnets This data is for reference only It provides a qualitative comparison of the materials according to their physical and mechanical characteristics Cold-worked Tempered Data for bonded magnets with % to 13 % mass fraction of PA-12 (nylon-12, a kind of polyamide) d to > 10 30 to 40 50 to 60 50 to 60 > 10 c 60 to 80 4 80 to 90 40 to 50 30 to 40 000 to 500 b 500 to 500 c 200 to 400 b 600 to 700 c 80 to 300 MPa Tensile strength 1,4 to 1,6 0,75 to 0,85 0,5 to 0,6 0,55 to 0,65 0,7 to 0,8 0,45 to 0,55 μΩ∙m Resistivity i = isotropic, a = anisotropic Bonded ║ 12 to 13 ┤10 to 11 to 10 to 10 10 to 13 10 to 30 10 to 50 W/m∙K Thermal conductivity b U5-1-x S1-1-x Sintered ║ to ┤12 to 13 ║ to 10 ┤10 to 12 ║ to ┤−3 to −1 11 to 12 10 to 11 11 to 12 10 −6 %/°C Thermal expansion coefficient Physical properties a a a S1-0-x i Sintered R5-1-x x=1,2,…,9 R5-1-x x=10,11,…,19 Sintered Cast R3-1-x R7-1-x Cast or sintered Cast or sintered Manufacturing R1-0-x and R1-1-x R6-0-x and R6-1-x Code number a a a i and a i and a a Magnetic anisotropy ┤ perpendicular ║ parallel Bonded d SmFeN Hard ferrite NdFeB Sm Co 17 SmCo FeCoVCr CrFeCo AlNiCo Brief designation Material/manufacturing 600 to 700 600 to 700 000 to 100 800 to 900 900 to 000 300 to 400 MPa Compressive strength to 15 to 200 15 to 200 150 to 200 150 to 200 100 to 150 100 to 200 GPa Young’s modulus Mechanical reference properties Table A.1 – Physical data and mechanical reference values of AlNiCo, CrFeCo, FeCoVCr, SmCo, NdFeB, hard ferrite and bonded SmFeN magnets 500 to 600 500 to 600 500 to 600 600 to 700 500 to 600 400 to 500 c 300 to 350 b 300 to 400 Hv Vicker’s Hardness BS EN 60404-8-1:2015 IEC 60404-8-1:2015 © IEC 2015 – 35 – – 36 – BS EN 60404-8-1:2015 IEC 60404-8-1:2015 © IEC 2015 Bibliography [1] IEC 60050-121, International Electromagnetism [2] IEC 60050-151, International Electrotechnical Vocabulary – Part 151: Electrical and magnetic devices [3] IEC 60050-221, International Electrotechnical Vocabulary – Part 221: Magnetic materials and components [4] IEC 60404-1:2000, Magnetic materials – Part 1: Classification [5] IEC 60404-7, Magnetic materials – Part 7: Method of measurement of the coercivity of magnetic materials in an open magnetic circuit [6] IEC TR 62517, Magnetizing behaviour of permanent magnets Electrotechnical _ Vocabulary – Part 121: This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services BSI is incorporated by Royal Charter British Standards and other 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