HOT OR COLD LAMINATED STEEL SHEET, ITS MANUFACTURING PROCESS AND USE IN THE AUTOMOTIVE INDUSTRY

摘要

Hot-rolled or cold-rolled steel plate, method for manufacturing same and use thereof in the automotive industry A hot-rolled or cold-rolled steel plate, characterized in that its composition is in weight percentages: 0.6%@C@0.9%; 17%@Mn@22%; 0.2%@Al@0.9%; 0.2%@Si@1.1% with 0.85%@Al+Si@1.9%; 1.2%@Cu@1.9%; S@0.030%; P@0.080%; N@0.1%; optionally: Nb@0.25% and preferably comprised between 0.070 and 0.25%; V@0.5% and preferably comprised between 0.050 and 0.5%; Ti@0.5%, and preferably comprised between 0.040 and 0.5%; Ni@2%; trace amounts Cr@2%, preferably@1%; B@0.010%, and preferably, comprised between 0.0005% and 0.010%; the remainder being iron and impurities resulting from the production. A method for manufacturing this plate, the use of this plate in the automotive industry.