| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonoriented silicon steel sheet which has excellent calking properties. SOLUTION: The nonoriented silicon steel sheet having excellent calking properties has a composition containing, by mass, <=0.005% C, <=4% Si, <=1.5% sol.Al, <=2% Mn, <=0.2% P, <=0.01% (inclusive of zero) S, <=0.005% (inclusive of zero) N and <=0.004% (inclusive of zero) O, and the balance substantially Fe, and in which, among inclusions observed in the cross section of the steel sheet, the number of the ones having a diameter of 1.5 to 5 μm is <=40 pieces/mm<2> , and the number of the ones having a diameter of >=5 μm is <=2 pieces/mm<2> . |
