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Weld Mold® 4043


A 5% silicon aluminum bare rod that flows freely at 1000º F to 1100º F with a wide plastic range and excellent corrosive resistance. Has a good color match and produces strong joints.

Applications

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. It is not heat treatable and will discolor if anodized. Weld Mold 4043 is a suitable filler material for welding on aluminum types 4043, 6063, 5052, 6061, 355, 356, 357, and 359.

Procedure

Weld areas should be clean and heavier sections should be beveled. Best results will be obtained on heavier sections when preheated to approximately 500º F. Slag is easily removed and should be brushed or chipped before successive weld passes. Clean with hot water and rinse clean, add 10% sulphuric acid if additional cleaning is required.

GTAW DC
100%Ar

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