1、 IEC 60404-1 Edition 3.0 2016-10 INTERNA TIONAL STA NDA RD Magnetic materials Part 1:Classification IEC 60404-1:2016-10(en)THIS PUBLICA TION IS COPYRIGHT PROTECTED Copyright 2016 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no par t of this publication may be reproduced or u
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10、 assistance,please contact the Customer Serv ice Centre:csciec.ch.IEC 60404-1 Edit ion 3.0 2016-10 INTER NA TIONAL STA NDA R D Magnetic materials Part 1:Classification INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.030 ISBN 978-2-8322-3671-0 R egist er ed tr ademar k of t he Int er national Electr
11、 ot echnical Commission W arning!Make sure that y ou obtained this publication from an authorized distributor.2 IEC 60404-1:2016 IEC 2016 CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Terms and definitions.7 4 Magnetically soft materials(coercivity 1 kA/m).8 4.1 Class A Irons.8 4.1.1 Refe
12、rence documents.8 4.1.2 Chemical composition.8 4.1.3 Basis of subclassification.8 4.1.4 Available forms.8 4.1.5 Physical characteristics.8 4.1.6 Main applications.8 4.2 Class B Low carbon mild steels.9 4.2.1 Class B1 Bulk material.9 4.2.2 Class B2 Flat material.9 4.3 Class C Silicon steels.10 4.3.1
13、Class C1 Bulk material.10 4.3.2 Class C2 Flat material.11 4.4 Class D Other steels.16 4.4.1 Class D1 Bulk material.16 4.4.2 Class D2 Flat material.18 4.4.3 Class D3 Stainless steels.18 4.5 Class E Nickel-iron alloys.19 4.5.1 Class E1 Nickel content 70%to 85%.19 4.5.2 Class E2 Nickel content 54%to 68
14、%.20 4.5.3 Class E3 Nickel content 40%to 51%.21 4.5.4 Class E4 Nickel content 35%to 40%.22 4.5.5 Class E5 Nickel content 29%to 33%.23 4.6 Class F Iron-cobalt alloys.24 4.6.1 Class F1 Cobalt content 47%to 50%.24 4.6.2 Class F2 Cobalt content 35%.24 4.6.3 Class F3 Cobalt content 23%to 30%.25 4.7 Class
15、 G Other alloys.26 4.7.1 Class G1 Aluminium-iron alloys.26 4.7.2 Class G2 Aluminium-silicon-iron alloys.27 4.8 Class H Magnetically soft materials made by powder metallurgical techniques.27 4.8.1 Class H1 Soft ferrites.27 4.8.2 Class H2 Magnetically soft sintered materials.29 4.8.3 Class H3 Powder c
16、omposites.29 4.9 Class I Amorphous soft magnetic materials.30 4.9.1 General.30 4.9.2 Class I1 Iron-based amorphous alloys.30 4.9.3 Class I2 Cobalt-based amorphous alloys.31 4.9.4 Class I3 Nickel-based amorphous alloys.32 4.10 Class J Nano-crystalline soft magnetic materials.33 IEC 60404-1:2016 IEC 2016 3 4.10.1 Reference document.33 4.10.2 Production process.33 4.10.3 Chemical composition.33 4.10.4 Basis of subclassification.33 4.10.5 Available forms.33 4.10.6 Physical characteristics.33 4.10.7