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Detroit Torch's Aluminum TIG rods are available in 3/32, 1/16 and 1/8. Qualified to AWS A5.10 R4043, ABS, ISO Designation AlSi5, Alloy 4043 is a 5% silicon alloy used to weld heat-treatable base alloys. Most often used to weld the 6XXX series of alloys, the silicon addition improves puddle fluidity, producing an appealing bead profile and less crack-sensitive on the 6XXX series than other welding alloys. Common applications for Aluminum TIG rods are automotive parts, truck trailers and bicycles. Well suited for brazing thin aluminum sheet and tubing; comes in 1/2 lb packages.