Electrode (Aluminium Welding Electrodes), is outside the core of metal welding, coating (drug skin) uniform pressure applied to the welding core carefully. Ie, minum electrode welding core metal core, in order to ensure the quality and performance of the weld, butt the content of metal elements in the core there are stringent regulations, especially the content of harmful impurities (such as sulfur, phosphorus, etc.), there should be strict restrictions, better than the parent metal. Heat resistant steel Welding Electrode Material.