Non Oriented Electrical Steel Sheet, Method For Manufacturing Same, And Motor Core Comprising Same

Abstract: A non-oriented electrical steel sheet according to an embodiment of the present invention comprises: a steel sheet base material containing, in wt%, 2.0-6.5% of Si, 0.1-1.3% of Al, 0.3-2.0% of Mn, and 0.005-0.06% of Cr, with the remainder comprising Fe and inevitable impurities; and an insulation coating disposed on the steel sheet base material, wherein Expression 1 is satisfied before stress relief annealing and Expression 2 is satisfied after stress relief annealing. Expression 1: 0.1 = [Mn coating] / [Mn50], Expression 2: 10 = [Mn coating] / [Mn50] = 1 (In Expression 1 and Expression 2, [Mn coating] represents the average Mn content (wt%) in the insulation coating, and [Mn50] represents the Mn content (wt%) at a depth of 50 µm into the steel sheet base material from the interface between the steel sheet base material and the insulation coating)

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