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.dition 2.0 2018-11 INTERNATIONAL STANDARD NORME INTERNATIONALE colour inside Magnetic materials – Part 9: Methods of determination of the geometrical characteristics of electrical steel strip and sheet Matériaux magnétiques – Partie 9: Méthodes de détermination des caractéristiques géométriques des bandes et t？les magnétiques en acier IEC 60404-9:2018-11(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright ？ 標準截圖