This part of IEC 60424 gives a guidance on allowable limits of surface irregularities applicable to RM-cores in accordance with the relevant generic specification.
This standard should be considered as a sectional specification useful in the dialogue between ferrite core manufacturers and customers about surface irregularities.
BS EN 60424-2:1998 history
2016BS EN 60424-2:2016 Ferrite cores. Guidelines on the limits of surface irregularities. RM-cores
1998BS EN 60424-2:1998 Guidance of the limits of surface irregularities of ferrite cores - RM-cores