ER4043 is a general -purpose type aluminium welding wire. It is one of the oldest and most widely used welding and brazing alloys.
This aluminium 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 aluminium.
Typical Applications:
Welding aluminum alloyed with copper, silicon, and magnesium
Excellent for joining dissimilar grades of aluminum
AWS Specification:
AWS A5.3/A5.3M:1999(R2007)
TYPICAL WIRE CHEMISTRY (As Welded):
Si/4.5-6.0
Cu/0.3
Fe/0.8
Mg/0.05
Mn/0.05
Z/0.10
AI/REM
Be/0.0008
Ti/0.2
Typical Mechanical properties (As Welded):
Yield Strength - 138MPA
Tensile Strength - 220MPa
Elongation%, min - 18
