Manganese is a vital alloying element and deoxidizer in welding electrodes, enhancing weld metal strength, toughness, and wear resistance while stabilizing the arc. It is commonly used in SMAW, MIG, and Flux Core (FCAW) electrodes, particularly for joining or surfacing high-manganese steel components subjected to heavy impact, such as crusher jaws. Acts as a deoxidizer to remove oxygen, increases tensile strength, improves ductility, and helps prevent hot cracking during cooling.