Electrical steel sheet
Abstract:
An electrical steel sheet has a composition including C: less than 0.010 mass %, Si: 1.5˜10 mass % and the balance being Fe and incidental impurities, wherein a main orientation in a texture of a steel sheet is //ND and an intensity ratio relative to randomly oriented specimen of the main orientation is not less than 5 and, preferably an intensity ratio relative to randomly oriented specimen of {111} orientation is not less than 10, an intensity ratio relative to randomly oriented specimen of {310} orientation is not more than 3 and Si concentration has a gradient that it is high at a side of a surface layer and low at a central portion in the thickness direction and a maximum value of the Si concentration is not less than 5.5 mass % and a difference between maximum and minimum values is not less than 0.5 mass %.
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