Abstract: A hot rolled steel sheet having a composition including the elements, expressed in percentage by weight 0.11%?Carbon?0.16%, 1%?Manganese?2%, 0.1%?Silicon?0.7%, 0 02%?Aluminum?0.1%, 0.15%?Molybdenum?0.4%, 0.15%?Vanadium?0.4%, 0.002%?Phosphorus?0.02%, 0%?Sulfur?0.005%, 0%?Nitrogen?0.01%, and can contain one or more of the following optional elements 0%?Chromium?0.5%, 0%?Niobium?0.05%, 0.0001%?Calcium?0.005%, 0%?Boron?0.001%, 0%?Magnesium?0.0010%, 0%?Titanium?0.01%, with 0.3%?Mo+V+Nb?0.6%, the remainder composition being composed of iron and unavoidable impurities, the microstructure of steel sheet including in area fraction, 70% to 90% Bainite, 10% to 25% Ferrite wherein the cumulated amounts of Bainite and Ferrite is at least 90% and a cumulated amount of Residual Austenite and Martensite is between 0% and 10%.

Abstract: The invention relates to a high-resistant, low-density hot laminated sheet steel comprising the following elements expressed in weight per cent: 0.04%:9 carbon?0.5%; 0.05%?manganese?3%, being able to contain hardening elements: 0.01%?niobium?0.1 0.01%?titanium?0.2% 0.01?vanadium?0.2%, either individually or combined, and/or elements acting on the transformation temperatures, 0.0005%?boron?0.005%; 0.05%?nickel?2%; 0.05%?chrome?2%; 0.05%?molybdenum?2%, either individually or combined, the remainder being iron and elements which are inherent to production, characterized in that it comprises: 2%?silicon?10%; 1%?aluminium?10%. The invention also relates to the production thereof.

Abstract: The invention relates to a high-resistant, low-density hot laminated sheet steel comprising the following elements expressed in weight per cent: 0.04%:9 carbon?0.5%; 0.05%?manganese?3%, being able to contain hardening elements: 0.01%?niobium?0.1 0.01%?titanium?0.2% 0.01?vanadium?0.2%, either individually or combined, and/or elements acting on the transformation temperatures, 0.0005%?boron?0.005%; 0.05%?nickel?2%; 0.05%?chrome?2%; 0.05%?molybdenum?2%, either individually or combined, the remainder being iron and elements which are inherent to production, characterized in that it comprises: 2%?silicon?10%; 1%?aluminium?10%. The invention also relates to the production thereof.

Abstract: Hot-rolled steel with very high elasticity limit and mechanical resistance usable in particular for auto parts production, characterized by the following composition by weight: 0.08%<carbon<0.16% 1%<manganese<2% 0.02%<aluminum<0.1% silicon<0.5% phosphorus<0.03% sulfur<0.01% vanadium<0.3% chromium<1% nitrogen<0.015% molybdenum<0.6%.

Abstract: Hot-rolled steel with very high elasticity limit and mechanical resistance usable in particular for auto parts production, characterized by the following composition by weight:

Abstract: A hot-rolled sheet steel for deep drawing, characterized in that it has the following composition:______________________________________ carbon >0.010 wt. % and <0.080 wt. % manganese >0.1 wt. % and <0.5 wt. % aluminum >0.02 wt. % and <0.08 wt. % silicon <0.1 wt. % phosphorus <0.04 wt. % sulfur <0.025 wt. % titanium <0.05 wt. % nitrogen <0.009 wt. % boron >0.001 wt. % and <0.01 wt. % copper >0.1 wt. % and <0.8 wt. % nickel >0.05 wt. % and <0.6 wt. %.

Abstract: Process for producing a strip of hot rolled steel sheet having a very high yield point of use in particular for the forming of parts and having a brittle/ductile transition at a temperature below -50.degree. C., characterized in that the steel having the following composition by weight;carbon.ltoreq.0.1%,1%.ltoreq.manganese.ltoreq.1.5%,silicon.ltoreq.0.3%,phosphorus.ltoreq.0.03%,sulphur.ltoreq.0.01%,0.01%.ltoreq.aluminium.ltoreq.0.1%,0.04%.ltoreq.niobium.ltoreq.0.06%,0.1%.ltoreq.titanium.ltoreq.0.15%,0.1%.ltoreq.molybdenum.ltoreq.0.2%,is subjected, after hot rolling, to a controlled cooling at a cooling rate of between 20.degree. C. per second and 100.degree. C. per second down to a temperature of between 550.degree. C. and 750.degree. C. of the end of the cooling. The invention also relates to the sheet obtained.