IEC 60404-8-4:2013

Magnetic materials - Part 8-4: Specifications for individual materials - Cold-rolled non-oriented electrical steel strip and sheet delivered in the fully-processed state

IEC 60404-8-4:2013 defines the grades of cold-rolled non-oriented electrical steel strip and sheet in nominal thicknesses of 0,35 mm, 0,50 mm, 0,65 mm and 1,00 mm. It specifies general requirements, the magnetic properties, geometric characteristics and tolerances, and technological characteristics, as well as the inspection procedure. This standard applies to materials supplied in the fully annealed condition intended for the construction of magnetic circuits. It does not apply to semi-processed material. This edition includes the following significant technical changes with respect to the previous edition:
- Deletion of the dates for all normative references;
- Introduction of the new grades M210-35A 5 and M230-50A 5.

Matériaux magnétiques - Partie 8-4: Spécifications pour matériaux particuliers - Bandes et tôles magnétiques en acier à grains non orientés, laminées à froid et livrées à l'état fini

La CEI 60404-8-4:2013 définit les nuances de bandes et tôles magnétiques en acier à grains non orientés, laminées à froid, d'épaisseur nominale 0,35 mm, 0,50 mm, 0,65 mm et 1,00 mm. Elle spécifie les exigences générales, les caractéristiques magnétiques, les caractéristiques géométriques et les tolérances, les caractéristiques technologiques ainsi que les procédures de contrôle. La présente norme est applicable aux produits livrés après recuit final destinés à la construction de circuits magnétiques. Elle ne s'applique pas aux produits livrés à l'état semi-fini. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- Suppression des dates pour toutes les références normatives;
- Introduction des nouvelles nuances M210-35A 5 et M230-50A 5.

General Information

• Status: Published
• Publication Date: 13-May-2013
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• ICS: 29.030 - Magnetic materials
• Technical Committee: TC 68 - Magnetic alloys and steels
• Drafting Committee: JWG 1 - TC 68/JWG 1
• Current Stage: DELPUB - Deleted Publication
• Start Date: 27-Mar-2020
• Completion Date: 21-Sep-2022

Relations

• Revises: IEC 60404-8-4:1998 - Magnetic materials - Part 8-4: Specifications for individual materials - Cold-rolled non-oriented electrical steel sheet and strip delivered in the fully-processed state
• Effective Date: 05-Sep-2023
• Revised: IEC 60404-8-4:2022 - Magnetic materials - Part 8-4: Specifications for individual materials - Cold-rolled non-oriented electrical steel strip and sheet delivered in the fully-processed state
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60404-8-4 ®
Edition 3.0 2013-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Magnetic materials –
Part 8-4: Specifications for individual materials – Cold-rolled non-oriented
electrical steel strip and sheet delivered in the fully-processed state

Matériaux magnétiques –
Partie 8-4: Spécifications pour matériaux particuliers – Bandes et tôles
magnétiques en acier à grains non orientés, laminées à froid et livrées à l'état
fini
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IEC 60404-8-4 ®
Edition 3.0 2013-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Magnetic materials –
Part 8-4: Specifications for individual materials – Cold-rolled non-oriented

electrical steel strip and sheet delivered in the fully-processed state

Matériaux magnétiques –
Partie 8-4: Spécifications pour matériaux particuliers – Bandes et tôles

magnétiques en acier à grains non orientés, laminées à froid et livrées à l'état

fini
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 17.220.20; 29.030 ISBN 978-2-83220-786-4

– 2 – 60404-8-4 © IEC:2013
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 6
4 Classification . 7
5 Designation . 7
6 General requirements . 7
6.1 Production process . 7
6.2 Form of supply . 7
6.3 Delivery condition . 8
6.4 Surface condition . 8
6.5 Suitability for cutting . 8
7 Technical requirements . 9
7.1 Magnetic properties . 9
7.1.1 General . 9
7.1.2 Magnetic polarization . 9
7.1.3 Specific total loss . 13
7.1.4 Anisotropy of loss . 13
7.2 Geometrical characteristics and tolerances . 13
7.2.1 Thickness . 13
7.2.2 Width . 14
7.2.3 Length . 14
7.2.4 Edge camber . 14
7.2.5 Flatness (wave factor) . 15
7.2.6 Residual curvature . 15
7.3 Technological characteristics . 15
7.3.1 Density . 15
7.3.2 Stacking factor . 15
7.3.3 Number of bends . 15
7.3.4 Internal stresses . 15
8 Inspection and testing . 15
8.1 General . 15
8.2 Selection of samples. 16
8.3 Preparation of test specimens . 16
8.3.1 Magnetic properties . 16
8.3.2 Geometrical characteristics and tolerances . 16
8.3.3 Technological characteristics . 17
8.4 Test methods . 17
8.4.1 General . 17
8.4.2 Magnetic properties . 17
8.4.3 Geometrical characteristics and tolerances . 18
8.4.4 Technological characteristics . 18
8.5 Retests . 18
9 Marking, labelling and packaging . 19
10 Complaints . 19
11 Information to be supplied by the purchaser . 19

60404-8-4 © IEC:2013 – 3 –
Annex A (informative) Non-specified magnetic properties . 20
Annex B (informative) European steel numbers . 21
Annex C (informative) Calculation of density values . 22
Bibliography . 23

Table 1 – Technological properties and magnetic properties measured by the Epstein
method (1 of 2) . 10
Table 2 – Technological properties and magnetic properties measured by the Epstein
method for strip and sheet of nominal thickness 0,47 mm for use at 60 Hz only . 12
Table 3 – Tolerances on nominal width . 14
Table A.1 – Non-specified properties . 20
Table B.1 – European steel numbers . 21

– 4 – 60404-8-4 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MAGNETIC MATERIALS –
Part 8-4: Specifications for individual materials –
Cold-rolled non-oriented electrical steel strip and
sheet delivered in the fully-processed state

FOREWORD
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