E4043

E4043 is a general purpose aluminum electrode
for arc welding aluminum alloys. The
arc is stable and operates at low temperatures
with a minimum of spatter and fuming. The
welds are strong, dense, and free of porosity
on both production and maintenance applications.
E4043 is a great choice when welding
heat-treated aluminum parts. This welding rod
may also be used in brazing applications.

Typical Applications
• Arc welding aluminums alloyed with copper,
silicon, and magnesium.
• Excellent for joining dissimilar grades of
aluminum.

AWS Specification
AWS A5.3/A5.3M:1999(R2007)
AWS Classification E4043

Welding Current

DCEP

Typical Wire Chemistry
Si 4.5 - 6.0
Cu 0.30
Fe 0.8
Mg 0.05
Mn 0.05
Zn 0.10
AI REM
Be 0.0008
Ti 0.20

Typical Mechanical properties
(As Welded)
Yield Strength, ksi 20
Tensile Strengt, ksi 32
Elongation%, min 18

Welding Positions

F,H

Available Diameters
5/64", 3/32", 1/8" & 5/32"

Operating Range in Amps
5/64" 20 - 60
3/32" 50 - 80
1/8" 70 - 120
5/32" 110 - 150