Commander­ 4043

Application

  • Suitable for Al and Al alloys with less than 2% alloying elements, cast aluminium alloys with upto 7% Silicon content.
  • Suitable for pistons and complex-shaped forgings.
  • Spray and fame metallizing wire.
  • General construction and automotive applications.

Commander 4043 is Al-Si alloy with good fluidity and is less sensitive to weld cracking and produces good weld. It has Moderate electrical conductivity, and thermal conductivity. It has low welding smut and discolouration. This is non-heat treatable.

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  • Chemical Composition
    • Si Fe Ti Mg Cu Mn Zn Al Be Other Total
    4.5-6.0 0.80 0.20 0.05 0.30 0.05 0.10 Rem. 0.0003 0.15
    • Classifications

      • AWS / SFA5.10: ER 4043

      UNS No.: A94043

      DIN 1732: SG-AI Si 5

      B.S.: NG21

      ISO 18273 Numerical: AI4043

      ISO 18273 Chemical: AISi5

      • Technical Data:

        • UTS: 11-13 Kgf/mm2

        YS: 2-5 Kgf/mm2

        Elongation (L=D): 17% Melting

        Melting Point: 573-625°C

        Resistance to Corrosion: A

        Anodize Color: Gray

        Electrical Conductivity: 42% IACS (-0)

        Density: 2.68 gms/cc

        Shielding Gas: 100% Argon, Argon/Helium Mixtures , Flow Rate: 30 – 50 CFH (14.2 – 23.6 L/Min)

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