Firepower 1440-0420 E4043 Aluminum Arc Electrodes 1/8-Inch Diameter, 5-Pound 1/8-inch in diameter Flux-coated aluminum electrodes Designed to give a weld with strength ductility and corrosion resistance equal to parent metal Applications include aluminum, sheet metal, plates, castings, tanks and piping Tensile strength: 34, 000 PSI