Weldcote Metals 340 Aluminum Smooth Stick Electrode (1/2 Pound Tube)
Aluminum electrodes in a 1/2 pound tube are perfect for when you need a few sticks but you don't use them regularly enough to warrant buying a full 10 pound package.
Smooth 340 features a precise combination of core wire and coating, providing high speed deposition of dense, machinable welds. It is recommended for fabrication and repair of cast and wrought aluminum. It is excellent for foundry defects, machining errors and all types of salvage work. It is widely used on sheets, tubes and extrusions in thicknesses of 1/8” or more. Smooth 340 is also well-suited to torch application.
Procedure: Use DC-reverse polarity. Weld areas should be clean and heavier sections should be beveled. Best results will be obtained on heavier sections when preheated to approximately 500°F. The electrode should be held in a vertical position. Slag is easily removed and should be brushed or chipped before multiple passes. Clean with hot water; add 10% sulphuric acid to water if additional cleaning is required.