Hello ADELUCA, I'm shooting from the cuff on this one. Unless you have the ability to anneal this material and then approach a welding solution and be able to do a final heat treat, you may be in for some trouble. There are a few places that you could look for some welding consumables that may work. Bohler, UTP, Eutectic and a few of the other specialty welding suppliers may have some electrodes that might work in your particular case. You should see about describing the situation a bit more specifically as others who would reply will want to know more information. Good luck and regards, aevald