| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-oriented magnetic steel sheet which has the L-direction magnetic properties more excellent than the C-direction magnetic properties, and a large value obtained by normalizing the weighted-average magnetic property in the L-direction weighted in the L-direction and the C-direction by average magnetic property in the entire circumferential 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, 1.0 to 4.0% of Si, 0.05 to 3.0% of Mn, 0.1 to 2.5% of sol.Al, 0.05 to 0.20% of P, 0.01 or less of S and 0.01% or less of N and the balance Fe with unavoidable impurities, and further satisfying Si+sol.Al+0.5×Mn≥2.0 and Si+0.5×sol.Al+0.3×Mn+10×P≤4.3. The non-oriented magnetic steel sheet has: a steel matrix in which the average crystal grain diameter is 40 to 180 μm; magnetic properties satisfying a specific formula; and a sheet thickness of 0.10 to 0.35 mm. |
