Non Oriented Electrical Steel Sheet, Rotor Core, Motor, And Method For Producing Non Oriented Electrical Steel Sheet

Abstract: Provided is a non-oriented electrical steel sheet capable of providing high strength and excellent magnetic characteristics and excellent in dimensional accuracy after punching. A non-oriented electrical steel sheet according to the present embodiment contains, in % by mass, 3.1-4.5% of Si, further, Ti, Si, Al, Zr, Nb, V, Mo, Cr, C, La, Ce and N satisfy formula (1) and formula (2), the tensile strength TS is higher than 570 MPa, the work hardening amount WH of formula (3) is less than 15 MPa, the average crystal grain size D (µm) satisfies formula (4), and the yield elongation is 0.5% or more. (1): Si/28+Ti/48+Nb/93+V/51+Zr/91+Mo/96+Cr/52>C/12×750; (2): Si/28+Al/27+Ti/48+Zr/91+La/139+Ce/140>N/14×1000; (3): WH=Y2.0-YS; (4): D<80-Si×10

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