摘要 |
PROBLEM TO BE SOLVED: To provide a non-oriented magnetic steel sheet which has good L-direction magnetic properties when no stress is loaded, and has C-direction magnetic properties hardly deteriorated even if a compressive stress is loaded in the C-direction, and to provide a production method for the non-oriented magnetic steel sheet.SOLUTION: The non-oriented magnetic steel sheet has a chemical composition comprising, by mass, 0.005% or less of C, 1.5 to 4.0% of Si, 3.0% or less of sol.Al, 3% or less of Mn, 0.2% or less of P, 0.005% or less of S and 0.005% or less of N and the balance Fe with unavoidable impurities. The non-oriented magnetic steel sheet has: a steel matrix in which the average crystal grain diameter is 40 to 170 μm; magnetic properties satisfying W/W≥1.10 and W/W≤0.85×σ; a specific resistance at room temperature of 40×10to 75×10Ωm; and a sheet thickness of 0.10 to 0.35 mm. |