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ER4043 MIG Wire

ER4043 is a general purpose type aluminum welding wire. It is one of the oldest and most widely used welding and brazing alloys. This aluminum alloy 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.

ER4043 ALUMINUM AND ALUMINUM ALLOY Electrodes and Rods

ER4043 is a general purpose type aluminum welding wire. It is one of the oldest and most widely used welding and brazing alloys. This aluminum alloy 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.

Typical Applications: welding filler wire; spray and flame metalizing wire

AWS Class: ER4043	Certification: AWS A5.10/ A5.10M:1999
Alloy: ER4043	AWS/ASME SFA A5.10

Welding Position:
F, V, OH, H

Current:
DCEP-GMAW
AC-GTAW

Typical Properties (as welded)

Conductivity:	42% IACS (-12)
Tensile Strength, kpsi:	29
Color:	Gray

Melting Point

1170⁰F

Solidification

1065⁰F

Density

0.097 lbs/cu In.

Typical Wire Chemistry as per AWS A5.10 (single values are maximum)

Si		Fe		Cu		Mn		Mg		Zn	Ti	Other	Al
4.5-6.0		0.8		0.30		0.05		0.05		0.10	0.20	0.15	Remainder
Typical Welding Parameters
Diameter			Process		Volt		Amps		GAS
in	(mm)
.030	(.8)		GMAW		15-24		60-175		Argon (cfh)
.035	(.9)		GMAW		15-27		70-185		Argon (cfh)
3/64”	(1.2 )		GMAW		20-29		125-260		Argon (cfh)
1/16”	(1.6)		GMAW		24-30		170-300		Argon (cfh)
3/32”	(2.4)		GMAW		26-31		275-400		Argon (cfh)
Diameter			Process		Volt		Amps		GAS
in	(mm)
1/16”	(1.6)		GTAW		15		60-80		Argon (cfh)
3/32”	(2.4)		GTAW		15		125-160		Argon (cfh)
1/8”	(3.2)		GTAW		15		190-220		Argon (cfh)
5/32”	(4.0 )		GTAW		15		200-300		Argon (cfh)
3/16”	(4.8)		GTAW		15-20		330-380		Argon (cfh)