Electro magnetic steels

A method for producing a non-silicon steel for electro magnetic applications including the steps of producing a vacuum de-gassed steel melt containing less than 0.025% by weight of carbon, between 0.1% and 1.0% manganese, between 0.01% and 0.15% phosphorus, not more than 0.02% of sulphur, not more than 0.007% of nitrogen, with titanium within the range of 0.05% to 0.25%, the remainder being iron, except for incidental impurities, adding aluminum to the melt in a quantity effective to produce a concentration of not more than 0.05%, hot rolling a slab derived from the melt to produce a strip, using a finishing temperature within the range 900.degree. C. to 950.degree. C. and coiling the resulting hot rolled strip at a temperature of not less than 700.degree. C., cold rolling the strip after coiling and cooling and annealing the cold rolled strip at a temperature within the range of about 900.degree. C. to 1000.degree. C.

A method for producing a non-silicon steel for electro magnetic applications including the steps of producing a vacuum de-gassed steel melt containing less than 0.025% by weight of carbon, between 0.1% and 1.0% of manganese, between 0.01% and 0.15% phosphorus, not more than 0.02% sulphur, not more than 0.007% of nitrogen, with titanium within the range of 0.05% to 0.25%, the remainder being iron, except for incidental impurities, adjusting the phosphorus concentration of the melt to lie within the range 0.05% to 0.15%, adding aluminum to the melt in a quantity effective to produce a concentration of not more than 0.05%, hot rolling a slab derived from the melt to produce a strip, using a finishing temperature within the range 900.degree. C. to 950.degree. C. and coiling the resulting hot rolled strip at a temperature of not less than 700.degree. C., cold rolling the strip after coiling and cooling and annealing the cold rolled strip at a temperature within the range of about 900.degree. C. to 1000.degree. C.