Product Description
Description
Weldcote Metals 4043 aluminum filler rod is a versatile, high‑quality alloy used for MIG welding, TIG welding, and aluminum brazing applications. Manufactured to precise tolerances, these 1/16-inch diameter, 36-inch long rods offer excellent feedability, smooth arc characteristics, and strong weld integrity. Alloy 4043 (Al‑Si) contains approximately 5% silicon, providing superior fluidity, reduced cracking tendencies, and bright, clean weld appearance. Packaged in a 10‑lb box, this filler metal is ideal for fabrication shops, repair work, automotive, marine, and general aluminum welding.
Product Details
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Brand: Weldcote Metals
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Alloy: 4043 Aluminum (Al‑Si)
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Diameter: 1/16 in (0.0625")
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Length: 36 in
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Package Weight: 10 lbs
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Form: Filler rod (compatible with MIG, TIG, and brazing applications)
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Material Type: Aluminum‑silicon alloy (approx. 5% Si)
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Weld Characteristics: Smooth flow, low crack sensitivity, bright weld finish
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Applications: Fabrication, automotive, marine, repair work, aluminum structures
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Compatible Base Metals: 3003, 3004, 5052, 6061, 6063, cast aluminum
Key Features
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4043 aluminum alloy provides excellent fluidity and reduced hot‑cracking
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1/16" diameter rods ideal for light to medium aluminum fabrication
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36" length ensures consistent feeding for MIG or TIG processes
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10‑lb package suitable for shop use and high‑volume welding
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Produces clean, bright welds with minimal spatter
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Compatible with a wide range of wrought and cast aluminum alloys
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Ideal for general fabrication, automotive repair, marine work, and structural aluminum welding
