Nonoriented electrical steel sheet excellent in core loss

A nonoriented electrical steel sheet comprising:

• by mass %,
• C:
• 0.01% or less,
• Si:
• 0.1% or more and 7.0% or less,
• Al:
• 0.005% or more and 3.0% or less,
• Mn:
• 0.1% or more and 2.0% or less,
• S:
• 0.0005% or more and 0.005% or less,
• Cu:
• 0.5% or less and 0.001% or more,
• REM:
• 0.0005% or more and 0.03% or less, and the balance Fe and unavoidable impurities,
• wherein, if 0.0005≦[REM]<0.003, the following expression (1) is met,
• and, if 0.003≦[REM]≦0.03, the following expressions (1) and (2) are met,
• [REM]×[Cu]3≧7.5×10−11 (1)
• ([REM]−0.003)0.1×[Cu]2≦1.25×10−4 (2),
• where [REM] represents REM mass % and [Cu] represents Cu mass %,
• wherein the number density of copper sulfides having a sphere-equivalent radius of 100 nm or less is 0.4×1010 [inclusion/mm3] or more, and 1×1010 [inclusion/mm3] or less, and
• wherein copper sulfides with a (major axis)/(minor axis) ratio of more than 2 is 30% or less in the copper sulfides having a sphere-equivalent radius of 100 nm or less.