prEN 60404-9:2018

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

Scope

This part of IEC 60404 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.