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IEC 60404-9 Ed. 2.0 b:2018

Magnetic materials - Part 9: Methods of determination of the geometrical characteristics of electrical steel strip and sheet
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IEC 60404-9 Ed. 2.0 b:2018

Magnetic materials - Part 9: Methods of determination of the geometrical characteristics of electrical steel strip and sheet

PUBLISH DATE 2018
PAGES 38
IEC 60404-9 Ed. 2.0 b:2018

Magnetic materials - Part 9: Methods of determination of the geometrical characteristics of electrical steel strip and sheet

IEC 60404-9:2018 specifies the measurement and test methods for the determination of the following geometrical characteristics of electrical steel strip and sheet:

  • edge wave (wave factor);
  • residual curvature;
  • edge camber;
  • deviation from the shearing line (internal stress);
  • burr height.

This document applies to electrical steel strip and sheet intended for the construction of magnetic circuits and corresponding to Classes B2, C21, C22 and C23 of IEC 60404-1.

This edition includes the following significant technical changes with respect to the previous edition:

  • revision of terms and definitions;
  • specification of the length of test specimens for the determinations of edge wave (wave factor) and edge camber;
  • addition of the horizontal method for the determination of residual curvature, and a note that informs about a safety concern of the vertical method;
  • clarification that the burr height was characterized by the maximum value;
  • addition of the measuring procedure using a hand-held micrometer to determine the burr height.
SDO IEC: International Electrotechnical Commission
Document Number IEC 60404
Publication Date Nov. 28, 2018
Language b - English & French
Page Count
Revision Level 2.0
Supercedes
Committee 68
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