The 0.5 mm×480 mm 50W1300 non-oriented electrical steel sheet 3t (0.04~0.06C
0.82~0.96Si
0.35~0.40Mn
0.015~0.017P
0.014~0.019S) has been researched and produced by using 40 t LD converter ·180 mm×495 mm slab concasting-continuous rolling flow sheet. The molten steel temperature was controlled between 1650 ℃ and 1670 ℃ and the oxygen content in steel decreased from72.9×10
-6
to 22.9×10
-6
by argon blowing in ladle. The electromagnetism properties and mechanical properties of pilot produced cold rolled non-orientation eclectic steel all met 50W1300 requirement of GB/T2521- 1996 being suitable for manufacturing rotor of small motor.