Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet

A non-oriented electrical steel sheet comprising:

• a chemical composition containing, in mass %,
• C:
• 0.005% or less,
• Si:
• 4.5% or less,
• Mn:
• 0.02% to 2.0%,
• Sol.Al:
• 2.0% or less,
• P:
• 0.2% or less,
• Ti:
• 0.007% or less,
• S:
• 0.005% or less,
• one or both of As and Pb:
• total of 0.0005% to 0.005%, and
• the balance consisting of Fe and inevitable impurities;
• wherein an average grain size r, measured in a cross-sectional area of the steel sheet, is 40 μm to 120 μm,
• wherein an area ratio R, in percentage, of a total area of grains having a grain size of ⅙ or less of a thickness of the steel sheet in the cross-sectional area of the steel sheet is 2% or greater,
• wherein the average grain size r μm and the area ratio R % satisfy a condition represented by Expression (1),
• R>−2.4×r+200 (1),
• wherein the cross-sectional area of the steel sheet is an area of a cross-section yielded by cutting the non-oriented electrical steel sheet in a thickness direction, parallel to a rolling direction, at a center in a sheet transverse direction, and
• wherein the thickness of the steel sheet is 0.35 mm or less.