NF C28-901-13*NF EN IEC 60404-13:2018 Magnetic materials - Part 13 : methods of measurement of resistivity, density and stacking factor of electrical steel strip and sheet
2018NF C28-901-13*NF EN IEC 60404-13:2018 Magnetic materials - Part 13 : methods of measurement of resistivity, density and stacking factor of electrical steel strip and sheet