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IEC 60404-8-3 Ed.4.0 Edition 11/2023
Magnetic materials - Part 8-3: Specifications for individual materials - Cold-rolled non-oriented electrical steel strip and sheet delivered in the semi-processed state
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Abstract

IEC 60404-8-3:2023 defines the grades of cold-rolled non-oriented electrical steel strip and sheet delivered in the semi-processed state in nominal thicknesses of 0,47 mm, 0,50 mm, 0,64 mm, 0,65 mm and 0,79 mm. It gives general requirements, magnetic properties, geometric characteristics, tolerances and technical characteristics as well as inspection procedures. The nominal thicknesses of 0,47 mm, 0,64 mm and 0,79 mm apply to the grades for use at 60 Hz only.
This document applies to cold-rolled non-oriented electrical steel strip and sheet delivered in the semi-processed state, i.e. without final heat treatment, in coils or sheets, and intended for the construction of magnetic circuits. This document does not apply to materials supplied in the fully-processed state.
These materials correspond respectively to classes B2 and C21 of IEC 60404-1.
This edition includes the following significant technical changes with respect to the previous edition:
a) Modification of terms and technical requirements concerning geometrical characteristics to be consistent with IEC 60404-9:2018;
b) Insertion of Table 3 – Tolerances on nominal thickness;
c) Change of the length of the test specimen for determination of geometrical characteristics from 2 m to 1 m;
d) Deletion of Annex A with the European numerical system of designation of steels.

Status

Standard - Active

Origin

Technical Committee :
68 : Magnetic alloys and steels

Implementation

start of the vote on the project      date of ratification (dor)   
end of the vote on the project      date of anouncement (doa)   
start of the vote on the final project      date of publication (dop)   
end of the vote on the final project      date of withdrawal (dow)   


Publication Official Journal
of the Grand-Duchy of Luxembourg
Reference

Relations

Relations to older standards
IEC 60404-8-3 Ed. 3.0

International Classification for Standards (ICS codes) :

17.220.20 : Measurement of electrical and magnetic quantities
29.030 : Magnetic materials

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