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ER4043 is a general-purpose type aluminum welding wire. It contains silicon additives, which result in improved fluidity (wetting action) of the weld pool and also produces a weld less sensitive to cracking. Its bright weld finish makes it a popular choice of welders. ER4043 can be used to weld various grades of aluminum. 36” lengths of this material are embossed on both ends for easy identification.

AWS Specification
AWS A5.10

AWS Classification
ER4043

Welding Current
DCEP (Electrode Positive)

Typical Wire Chemistry
Si 5.0
Mn 0.05
Ti 0.20
Cu 0.30
Iron 0.80
Zn 0.10
Be 0.0008
Mg 0.05

Typical Properties (As Welded)
Melting range 1065 –1170 °F
Conductivity 42% IACS (-0)
Density .097 lbs/cu. in.

Welding Positions
All positions

Shielding Gas
100% Ar

Available Diameters
.030”, .035”, 3/64”, 1/16”, 3/32”, 1/8”, & 5/32”

Operating Range In Amps
.030” 60 – 100
.035” 100 – 160
3/64” 150 – 200

 

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