1 Scope
This part of IEC 60404 defines the grades of thin non-oriented electrical steel strip and sheet in nominal
thicknesses of 0,05 mm, 0,10 mm, 0,15 mm, 0,20 mm, 0,25 mm, 0,30 mm and 0,35 mm and
of thin grain-oriented electrical steel strip and sheet in nominal thicknesses of
0,05 mm, 0,10 mm, 0,15 mm and 0,18 mm. In particular, it gives general requirements,
magnetic properties, geometric characteristics and tolerances, technological characteristics,
as well as inspection procedures.
NOTE For thin non-oriented electrical steel strip and sheet, other nominal thicknesses
(i.e. 0,12 mm, 0,18 mm, 0,23 mm and 0,27 mm) can be agreed between the manufacturer
and the purchaser.
This document applies to electrical steel strip and sheet supplied in the finally
annealed condition in coils or sheets and intended for the construction of magnetic
circuits predominantly used at frequencies in the range from 100 Hz to 10 kHz.