POSCO Holdings Inc.
NON-GRAIN ORIENTED ELECTRICAL STEEL AND METHOD FOR MANUFACTURING SAME

Abstract:

A non-oriented electrical steel sheet according to an embodiment of the present invention includes: in wt %, C at 0.004 wt % or less (excluding 0 wt %), Si at 2.5 to 4.0 wt %, P at 0.1 wt % or less (excluding 0 wt %), Al at 0.3 to 2.0 wt %, N at 0.003 wt % or less (excluding 0 wt %), S at 0.003 wt % or less (excluding 0 wt %), Mn at 0.15 to 2.5 wt %, Cr at 0.5 wt % (excluding 0 wt %), and the balance including Fe and other impurities unavoidably added thereto; satisfies the following Equation 1; and has an average grain size of 20 .mu.m or less. [Mn].gtoreq.1450.times.[S]-0.8 [Equation 1] (In Equation 1, [Mn] and [S] represent a content (wt %) of Mn and S, respectively.)