Aluminium Alloy

JACKSUN ALLOY 4043

AWS/ASME: A5.10 ER4043

JACKSUN ALLOY-4043 is a solid aluminium-silicon MIG/TIG wire designed for welding aluminium and its alloys. Suitable for automotive, aerospace, marine, and general fabrication applications. Provides excellent corrosion resistance and smooth bead appearance. Offers good fluidity, minimal porosity, and excellent arc stability.

1. Typical Chemical Composition of Weld Metal (% by weight)

Si	Fe	Cu	Mn	Mg	Zn	Ti	Al
4.5 – 6	≤ 0.8	≤ 0.25	≤ 0.05	≤ 0.05	≤ 0.10	≤ 0.20	Balance

2. Typical Mechanical Properties of Weld Metal

Property	UTS (MPa)	Yield Strength (MPa)	Elongation (%)
Typical Values	140 – 265	75 – 195	10 – 15

3. Recommended Welding Parameters — AWS A5.10 ER4043

Welding Position	Current (A)	Voltage (V)	Shielding Gas	Gas Flow (L/min)
Flat / Horizontal	120 – 250	18 – 22	100% Ar	12 – 20
Vertical / Overhead	100 – 200	16 – 20	100% Ar	10 – 18

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