Abstract: Molten steel is deoxidized while it is being tapped into a receiving vessel by sequentially adding at least three separate deoxidizing agents in order of increasing deoxidizing strength. The additions are suitably spaced to allow each to mix and react before the next addition is made.

Abstract: A process for producing grain oriented silicon sheet steel having excellent magnetic properties in which the manganese and sulfur contents are critically controlled so that the product of manganese content, in weight percent, times sulfur content, in weight percent, is within the range 0.0007 to 0.0012, and aluminum is added to the deoxidized steel just prior to teeming to minimize the formation of insoluble oxide precipitates within the body of the teemed steel, the amount of aluminum added being limited so as to avoid appreciable aluminum remaining in solution in the teemed steel. The slab resulting from the above steel can then be preheated to a temperature of 2,130.degree. to 2,390.degree. F prior to hot rolling without sacrificing magnetic quality.