IEC 60404-8-10:2009

Magnetic materials - Part 8-10: Specifications for individual materials - Magnetic materials (iron and steel) for use in relays

IEC 60404-8-10:2009 specifies the general requirements, magnetic properties, geometric characteristics and tolerances as well as inspection procedures for magnetic materials used primarily for relays. This standard applies to pure iron, non-alloyed and alloyed steel and ferritic stainless steel products usually delivered in either the semi-processed or fully-processed state. These materials correspond to classes A, B, C and D.3 of IEC 60404-1. This second edition cancels and replaces the first edition published in 1994 and constitutes a technical revision. The main modifications from the previous edition of the standard are as follows:
- introduction of the ferritic stainless steels and the fully-processed state in the scope of the standard (see Clause 1);
- modification of the designation with the letter R at the beginning and the condition and state at the end (see Clause 5);
- introduction of the new grades R160 and R320 (see Table 2);
- modification of the requirements for the heat treatment of test specimens for semi-processed material (see Subclause 8.3.1);
- indication in Bibliography of standards referred to in this standard as an information.

Matériaux magnétiques - Partie 8-10: Spécifications pour matériaux particuliers - Matériaux magnétiques (fer et acier) pour relais

La CEI 60404-8-10:2009 spécifie les exigences générales, les caractéristiques magnétiques, les caractéristiques géométriques et tolérances ainsi que les conditions de contrôle des matériaux magnétiques employés principalement pour les relais. La présente norme est applicable aux produits en fer pur, en acier non allié et acier allié et en acier inoxydable ferritique habituellement livrés à l'état semi-fini ou à l'état fini. Ces matériaux correspondent aux classes A, B, C et D.3 de la CEI 60404-1. Cette deuxième édition annule et remplace la première édition parue en 1994, dont elle constitue une révision technique. Les modifications principales de la norme par rapport à l'édition précédente sont les suivantes:
- introduction des aciers inoxydables ferritiques et l'état fini dans le domaine d'application de la norme (voir Article 1);
- modification de la désignation avec la lettre R au début et l'état de livraison et l'état à la fin (voir Article 5);
- introduction de nouvelles nuances R160 et R320 (voir Tableau 2);
- modification des exigences pour le traitement thermique des éprouvettes pour les produits à l'état semi-fini (voir Paragraphe 8.3.1);
- indication dans la bibliographie des normes référencées dans la présente norme à titre d'information.

General Information

• Status: Published
• Publication Date: 18-May-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.030 - Magnetic materials
• Technical Committee: TC 68 - Magnetic alloys and steels
• Drafting Committee: JWG 1 - TC 68/JWG 1
• Current Stage: PPUB - Publication issued
• Start Date: 15-Jun-2009
• Completion Date: 19-May-2009

Standards Content (Sample)

IEC 60404-8-10 ®
Edition 2.0 2009-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Magnetic materials –
Part 8-10: Specifications for individual materials – Magnetic materials (iron and
steel) for use in relays
Matériaux magnétiques –
Partie 8-10: Spécifications pour matériaux particuliers – Matériaux magnétiques
(fer et acier) pour relais
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IEC 60404-8-10 ®
Edition 2.0 2009-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Magnetic materials –
Part 8-10: Specifications for individual materials – Magnetic materials (iron and
steel) for use in relays
Matériaux magnétiques –
Partie 8-10: Spécifications pour matériaux particuliers – Matériaux magnétiques
(fer et acier) pour relais
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
S
CODE PRIX
ICS 29.030 ISBN 978-2-88910-189-4
– 2 – 60404-8-10 © IEC:2009
CONTENTS
FOREWORD.4
1 Scope.6
2 Normative references .6
3 Terms and definitions .6
4 Classification.7
5 Designation .7
6 General requirements .8
6.1 Production process.8
6.2 Form of supply .8
6.2.1 Strip .8
6.2.2 Sheet and plate .8
6.2.3 Flats and bars .9
6.2.4 Wire rod and wire .9
6.3 Delivery condition and state .9
6.4 Surface condition .9
7 Technical requirements .9
7.1 Magnetic properties.9
7.2 Geometric characteristics and tolerances .10
7.2.1 Thickness of flat products.10
7.2.2 Diameter or side dimension of long products .12
7.2.3 Width of flat products.13
7.2.4 Flatness (wave factor) of flat products .14
7.2.5 Length .15
7.2.6 Edge camber for flat products.16
7.2.7 Straightness of hot-rolled flats and bars.16
8 Inspection.17
8.1 General .17
8.2 Selection of samples .17
8.2.1 General .17
8.2.2 Flat products .17
8.2.3 Long products.18
8.2.4 Wire rod and wire .18
8.3 Preparation of test specimens .18
8.3.1 Coercivity .18
8.3.2 Geometrical characteristics and tolerances.18
8.4 Test methods .18
8.4.1 General .18
8.4.2 Coercivity .19
8.4.3 Thickness of flat products.19
8.4.4 Width of flat products.19
8.4.5 Flatness (wave factor) of flat products .19
8.4.6 Edge camber of flat products .19
8.4.7 Dimensions of long products.19
8.4.8 Straightness of long products .19
8.4.9 Retest .19
9 Complaints .19

60404-8-10 © IEC:2009 – 3 –
10 Ordering information.19
Bibliography.21

Table 1 – Types of delivery condition and state .9
Table 2 – Coercivity and availability of grades .10
Table 3 – Tolerances on thickness for hot-rolled strip and sheet .10
Table 4 – Tolerances on thickness for hot-rolled plates.11
Table 5 – Tolerances on thickness for cold-rolled flat products .11
Table 6 – Tolerances on thickness for hot-rolled flats .11
Table 7 – Tolerances on diameter for hot-rolled rounds .12
Table 8 – Tolerances on side dimension for hot-rolled squares .12
Table 9 – Tolerances on the dimension of wire rod .12
Table 10 – Tolerances on the diameter of wire.13
Table 11 – Tolerances on width for hot-rolled strip and sheet .13
Table 12 – Tolerances on width for hot-rolled plate.13
Table 13 – Tolerances on width for cold-rolled flat products.14
Table 14 – Tolerances on width for hot-rolled flats .14
Table 15 – Tolerances on flatness for hot-rolled strip and sheet .14
Table 16 – Tolerances on flatness for hot-rolled plate.15
Table 17 – Tolerances on flatness for cold-rolled flat products.15
Table 18 – Tolerances on length for hot-rolled sheet.15
Table 19 – Tolerances on length for hot-rolled plate .16
Table 20 – Tolerances on length for cold-rolled flat products .16
Table 21 – Tolerances on straightness for hot-rolled flats .17
Table 22 – Tolerances on straightness for hot-rolled rounds and squares .17

– 4 – 60404-8-10 © IEC:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MAGNETIC MATERIALS –
Part 8-10: Specifications for individual materials –
Magnetic materials (iron and steel)
for use in relays
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 Com
...