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