Al-Mn electrode L309 
 Description: L309 (Model E3003) is a core of aluminum manganese alloy welding, coating for the base type of aluminum alloys, which is characterized by a high weld strength, corrosion resistance of aluminum similar. For welding aluminum manganese alloy, aluminum and other aluminum welding. 
 Major components of deposited metal /% 
 Si Mn Al 
 0.5 1 1.6 margin 
 L409 magnesium electrode 
 Description: L409 (Model E5183) is a magnesium alloy welding core coating for the base type of aluminum alloys, is a widely used general-purpose welding consumables. Suitable for welding or surface welding of magnesium alloy casting and forging, high strength, malleable, good, good corrosion resistance. Mainly used for bicycles, scooters, aluminum and other sports equipment, train locomotives, chemical pressure vessels, Ordnance production, shipbuilding, aviation and other sectors of the Al-Mn alloys welding. 
 Major components of deposited metal /% 
 Si Mn Mg Al 
 0.5 0.2 0.6 3 3.5 margin