Description

Qualified to AWS A5.10 ER4043, ABS, ISO Designation AISi5. 4043 is an all position 5% silicon alloy used to weld heat treatable base alloys. It is most often used to weld the 6XXX series of alloys. The silicon addition improves puddle fluidity, producing an appealing bead profile. It is less crack sensitive on the 6XXX series than other welding alloys. Common applications are automotive parts, truck trailers, bicycles.

GTAW (TIG) - For manual AC welding, argon is generally preferred because the arc has good stability. On heavier sections, the addition of helium may be considered, and arc penetration will increase significantly; however, gas flow rates must be increased when helium is added.

Features

Designed for welding heat treatable base alloys, specifically 6XXX series alloys
Lower melting point and more fluidity than the 5XXX series filler alloys
Low sensitivity to weld cracking with the 6XXX series base alloys
All position welding rod
Often used to for repair welding aluminum/silicon cast alloys such as grades 353/A356
Common choice for welding 6061
Gray (post anodized) color
Embossed on each end for easy identification after use

Specifications

Chemical Composition: Aluminum Remainder %, Magnesium 0.05% max., Manganese 0.05% max., Titanium 0.20% max., Copper 0.30% max., Silicon 4.5-6.0%, Zinc 0.10% max., Iron 0.80% max., Others Each 0.05% max.,Total 0.15% max.
Color: Gray (post anodized)
Density: 0.097 (lbs./cu.in.)
Elongation: 8% in 2" (as welded 6061 base plate)
Liquidus: 1170°F (632°C)
Polarity: AC - Hemisphere tip shape tungsten electrode
Solidus: 1065°F (574°C)
Tensile Strength (psi): 27,000 psi (as welded 6061 base plate)
Yield Strength (psi): 18,000 psi (as welded 6061 base plate)
Warranty: 1 Year
Welding Position: All

Applications

Welding 6XXX series alloys
Repair welding of aluminum/cast alloys such as grades 353/A356
Automotive components such as frames, drive shafts, parts, truck trailers, bicycle frames

Caution