NON-ORIENTED ELECTRICAL STEEL SHEET BEING LESS IN DETERIORATION OF IRON LOSS PROPERTY BY PUNCHING

摘要

C: not more than 0.005 mass%, Si: 2 to 7 mass%, Mn: 0.03 to 3 mass%, Al: not more than 3 mass%, P: not more than 0.2 mass% 0.0001 to 0.0005 mass% of As, and 0.0005 to 0.005 mass% of As, the balance being Fe and inevitable impurities, and having iron loss (W_15/50(X / t) of 0.15 or less in deflection (x) (mm) and plate thickness (t) (mm) at the time of punching steel sheet is 3.5 W / kg or less, , And the deterioration of the iron loss property by punching is small.;