PROCESS FOR PRODUCING A HOT-FORMED AND PRESS-HARDENED SHEET STEEL COMPONENT

• Main Authors: HATSCHER, Ansgar, DIEKMANN, Uwe
• Format: Patent
• Language: English; French; German
• Published: 06.04.2022
• Subjects: ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The invention relates to a steel material comprising a steel alloy having at least the following constituents in per cent by weight: 0.30 to 0.42% carbon; 0.3 to 2.5% manganese; 0.8 to 2.2% silicon; up to 0.06% aluminium; up to 0.5% chromium, nickel and molybdenum together; up to 0.06% niobium; up to 0.1% vanadium; up to 0.01% titanium; 0.001 to 0.01% boron; up to 0.01% nitrogen; up to 0.01% sulfur; up to 0.02% phosphorus; balance: iron and impurities, wherein a microstructure consists of essentially bainite, stabilized residual austenite and martensite.