Alloy 4043
PN: 0404320

Where to buy this product

Alloy 4043 (TIG)

Description: Aluminum TIG welding alloy

Qualified to AWS A5.10 R4043, ABS, ISO Designation AlSi5, Alloy 4043 is a 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.

Typical Application:  Common applications are automotive parts, truck trailers and bicycles. It is also ideally suited for brazing thin aluminum sheet and tubing.

  • Part NumberSizeAvailability
    7895/32 X 36"
    8111/8 X 36" Bulk
    Variety of Sizes Available Germany
  • Chemical CompositionAWSShielding GasCommercial SpecificationDIN EN RatingMelting Range
    Si - 4.5-6%
    Fe - 0.8%
    Cu - 0.3%
    Mn - 0.05%
    Mg - 0.05%
    Zn - 0.1%
    Ti - 0.2%
    Al - Rem%
    Others - 0.15%
    AWS A5.10, AWS A5.3;ASME SFA5.10CO2/ARGONUNS-A940431732 SG Al Si 5575-630°C
  • Welding ParametersSpec Sheet