Abstract: A High Manganese hot rolled steel having a composition including of the following elements 0.8%?Carbon?1.3%, 9.5%?Manganese?22%, 0.01%?Silicon?3%, 0.01%?Aluminum?3%, 0.03%?Phosphorus?0.1%, 0.03%?Sulfur?0.1%, 0%?Nitrogen?0.01%, 0%?Niobium?0.03%, 0%?Titanium?0.2%, 0%?Chromium?1.5%, 0%?Molybdenum?0.5%, 0%?Calcium?0.005%, 0.01%?Copper?2%, 0.01%?Nickel?3%, 0%?Boron?0.01%, 0%?Magnesium?0.005%, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel consisting in, in area fraction, 95% or more of Austenite, 0% to 5% Carbides wherein the grain size of the grains of Austenite is 15 microns or more.

Abstract: A hot rolled steel product having a composition including in percentage by weight: 0.06%?C?0.18%, 0.01%?Ni?0.6%, 0.001%?Cu?2%, 0.001%?Cr?2%, 0.001%?Si?0.8%, 0%?N?0.008%, 0%?P?0.03%, 0%?S?0.03%, 0.001%?Mo?0.5%, 0.001%?Nb?0.1%, 0.001%?V?0.5%, 0.001%?Ti?0.1% and one or more following optional elements 0.2%?Mn?2%, 0.005%?Al?0.1%, 0%?B?0.003%, 0%?Ca?0.01%, 0%?Mg?0.010% the remainder composition being composed of iron and unavoidable impurities caused by processing, such product having a tertiary scale layer including, in area fraction, a total amount of at least 50% of magnetite and ferrite wherein ferrite is at least 25%, 0% to 50% of wustite, and 0% to 10% of hematite, such scale layer having a thickness between 5 microns and 40 microns.

Abstract: A hot rolled steel sheet having a composition including, 0.02%?Carbon?0.2%, 3%?Manganese?9%, 0.2%?Silicon?1.2%, 0.9%?Aluminum?2.5%, 0%?Phosphorus?0.03%, 0%?Sulfur?0.03%, 0%?Nitrogen?0.025%, 0%?Molybdenum?0.6%, 0%?Titanium?0.1%, 0.0001%?Boron?0.01%, 0%?Chromium?0.5%, 0%?Niobium?0.1%, 0%?Vanadium?0.2%, 0%?Nickel?1%, 0%?Copper?1%, 0%?Calcium?0.005%, 0%?Magnesium?0.0010% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet including in area fraction, at least 60% of tempered martensite, 15% to 40% residual austenite, 0% to 10% polygonal ferrite, 0% to 5% of bainite, 0 to 15% of fresh martensite and 0% to 5% of carbides of Niobium, Titanium, Vanadium or Iron.

Abstract: A hot rolled steel sheet having a composition including of the elements, 0.02%?Carbon?0.2%, 3%?Manganese?9%, 0.2%?Silicon?1.2%, 0.9%?Aluminum?2.5%, 0%?Phosphorus?0.03%, 0%?Sulfur?0.03%, 0%?Nitrogen?0.025%, 0%?Molybdenum?0.6%, 0%?Titanium?0.1%, 0.0001%?Boron?0.01%, 0%?Chromium?0.5%, 0%?Niobium?0.1%, 0%?Vanadium?0.15%, 0%?Nickel?1%, 0%?Copper?1%, 0%?Calcium?0.005%, 0%?Magnesium?0.0010%, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet including in area fraction, at least 60% of tempered martensite, 15% to 40% residual austenite, 0% to 10% polygonal ferrite, 0% to 5% of bainite, 0 to 15% of fresh martensite and 0% to 5% of carbides of Niobium, Titanium, Vanadium or Iron.

Abstract: A hot rolled steel product having a composition including in percentage by weight: 0.06%?C?0.18%, 0.01%?Ni?0.6%, 0.001%?Cu?2%, 0.001%?Cr?2%, 0.001%?Si?0.8%, 0%?N?0.008%, 0%?P?0.03%, 0%?S?0.03%, 0.001%?Mo?0.5%, 0.001%?Nb?0.1%, 0.001%?V?0.5%, 0.001%?Ti?0.1% and one or more following optional elements 0.2%?Mn?2%, 0.005%?Al?0.1%, 0%?B?0.003%, 0%?Ca?0.01%, 0%?Mg?0.010% the remainder composition being composed of iron and unavoidable impurities caused by processing, such product having a tertiary scale layer including, in area fraction, a total amount of at least 50% of magnetite and ferrite wherein ferrite is at least 25%, 0% to 50% of wustite, and 0% to 10% of hematite, such scale layer having a thickness between 5 microns and 40 microns.

Abstract: A process to manufacture grain-oriented electrical steel (GOES) strip and a product produced by the process are provided. A molten silicon-alloyed steel is continuously cast in a strand having a thickness in the range of from 50 to 100 mm and subjected to hot- rolling in a plurality of uni-directional rolling stands to produce final hot-rolled strip coils having a thickness in the range of from 0.7 to 4.0 mm followed by a continuous annealing the hot-rolled strip, cold rolling, continuous annealing the cold-rolled strip to induce primary recrystallisation and, optionally, decarburization and/or nitriding, coating the annealed strip, annealing the coiled strip to induce secondary recrystallisation, continuous thermal flattening annealing of the annealed strip and coating the annealed strip for electric insulation.