Method For Laser Welding One Or More Workpieces Of Hardenable Steel In A Butt Joint

A method for laser welding of one or more workpieces made from press hardenable steel, particularly manganese-boron steel, in a butt joint, in which the workpiece or the workpieces (1, 2;

• 1, 2′) have a thickness of at least 1.8 mm and/or a jump in thickness (d) of at least 0.4 mm arises at the butt joint (3), and in which the laser welding takes place with the supply of filler wire (10) into the molten bath (8) generated with a laser beam (6), characterised in that the filler wire (10) contains at least one alloy element from the group comprising manganese, chromium, molybdenum, silicon and/or nickel, which element promotes the formation of austenite in the molten bath (8) generated using the laser beam (6), wherein this at least one alloy element is present in the filler wire (10) with a mass proportion that is larger by 0.1% by weight than in the press hardenable steel of the workpiece or the workpieces (1, 2;
• 1, 2′).