Abstract: A process for producing electromagnetic silicon steel having a cube-on-edge orientation. The process includes the steps of: preparing a melt of silicon steel containing from 0.02 to 0.06% carbon, from 0.0006 to 0.0080% boron, up to 0.0100% nitrogen and from 2.5 to 4% silicon; casting the steel; hot rolling the steel; cold rolling the steel to a thickness no greater than 0.020 inch; heat treating the steel at a temperature between 1550.degree. and 2000.degree. F. in a hydrogen-bearing atmosphere; removing at least 0.02 micron of surface from each side of the steel; heat treating the steel at a temperature between 1300.degree. and 1550.degree. F. in a hydrogen-bearing atmosphere; applying a refractory oxide coating to the steel and final texture annealing the steel.

Abstract: A process for producing electromagnetic silicon steel having a cube-on-edge orientation. The process includes the steps of: preparing a melt of silicon steel having up to 0.07% carbon, from 0.01 to 0.25% manganese, from 0.01 to 0.09% of material from the group consisting of sulfur and selenium, from 2.5 to 4.0% silicon, up to 1.0% copper, less than 0.009% aluminum and less than 0.0006% boron; casting the steel; hot rolling the steel; cold rolling the steel; normalizing the steel in a hydrogen-bearing atmosphere having a pH.sub.2 O/pH.sub.2 of from 0.015 to 0.3; applying a refractory oxide coating containing an oxide less stable than SiO.sub.2 at temperatures up to 2150.degree. F.; and final texture annealing the steel.

Abstract: A process for producing electromagnetic silicon steel having a cube-on-edge orientation and a permeability of at least 1870 (G/Oe) at 10 oersteds. The process includes the steps of: preparing a melt of silicon steel containing from 0.02 to 0.06% carbon, from 0.0006 to 0.0080% boron, up to 0.0100% nitrogen, no more than 0.008% aluminum and from 2.5 to 4.0% silicon; casting said steel; hot rolling said steel; cold rolling said steel to a thickness no greater than 0.020 inch; recrystallizing the cold rolled steel at a temperature between 1300.degree. and 1550.degree. F in a hydrogen-bearing atmosphere having a dew point of from +50.degree. to +150.degree. F; decarburizing said steel to a carbon level below 0.005%; applying a refractory oxide base coating to said steel; and final texture annealing said steel. The steel is heated to said temperature range of between 1300.degree. and 1550.degree. F at a heating rate of at least 1500.degree.

Abstract: A process for producing electromagnetic silicon steel having a cube-on-edge orientation and a permeability of at least 1870 (G/O.sub.e) at 10 oersteds. The process includes the steps of: preparing a melt of silicon steel containing from 0.02 to 0.06% carbon, from 0.0006 to 0.0080% boron, up to 0.0100% nitrogen, no more than 0.008% aluminum and from 2.5 to 4.0% silicon; casting said steel; hot rolling said steel; cold rolling said steel; decarburizing said steel; applying a refractory oxide coating containing both boron and an oxide less stable than SiO.sub.2 at temperatures up to 2150.degree. F; and final texture annealing said steel.

Abstract: A process for producing electromagnetic silicon steel having a cube-on-edge orientation and a permeability of at least 1870 (G/O.sub.e) at 10 oersteds. The process includes the steps of: preparing a melt of silicon steel containing from 0.02 to 0.06% carbon, from 0.0006 to 0.0080% boron, up to 0.0100% nitrogen, no more than 0.008% aluminum and from 2.5 to 4.0% silicon; casting said steel; hot rolling said steel; cold rolling said steel to a thickness no greater than 0.020 inch; decarburizing said steel to a carbon level below 0.005%; normalizing said steel at a temperature of from 1550.degree. to 2000.degree. F in a hydrogen-bearing atmosphere; applying a refractory oxide base coating to said steel; and final texture annealing said steel.

Abstract: A process for producing electromagnetic silicon steel having a cube-on-edge orientation and a permeability of at least 1870 (G/O.sub.e) at 10 oersteds. The process includes the steps of: preparing a melt of silicon steel containing from 0.02 to 0.06% carbon, from 0.0006 to 0.0080% boron, up to 0.0100% nitrogen, no more than 0.008% aluminum and from 2.5 to 4.0% silicon; casting said steel; hot rolling said steel; cold rolling said steel; normalizing said steel at a temperature of from 1300.degree. to 2000.degree. F in a hydrogen-bearing atmosphere having a dew point of from +20.degree. to +110.degree. F; applying a refractory oxide base coating to said steel; and final texture annealing said steel. The variables of time, temperature and dew point are monitored during normalizing so as to result in a steel having at least 320 parts per million of oxygen, based on the total weight of the steel, within 10 microns of the surfaces of said steel.