| abstract |
A unidirectional electrical steel sheet exhibiting good glass film adhesion is provided. SOLUTION: A unidirectional electrical steel sheet in which a glass film is formed on a surface of a base steel sheet, wherein the base steel sheet is Si: 3.0 to 4.0%, Mn: 1.0 to 3.0%, C: 0.0001 to mass%. Contains 0.003%, S: 0.0001 to 0.0030%, acid-soluble Al: 0.003 to 0.030%, N: 0.0030 to 0.050%, the balance consists of Fe and inevitable impurities, SM value specified below is less than 7 and less than 50 It has an Al detection intensity peak defined below of 3 or more, an S detection intensity peak defined below of 2 or more, and the maximum detection intensity of N measured by GDS is 0.05 or more Is less than 0.1. [Selection] Figure 1 |