| 摘要 |
PROBLEM TO BE SOLVED: To produce a nonoriented silicon steel sheet excellent in magnetic characteristics while being inexpensive in the material and production cost. SOLUTION: In a silicon steel sheet contg., by weight, <=0.010% C, <=40% Si, <=2.0% Al, <=0.040% S, and the balance iron with inevitable components, among nonmetallic inclusions in the steel, the number of MnS simple substance inclusions and MnS-contg. composite inclusions with >=0.1μm diameter is 0.1 to 10 pieces/100μm2.
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