Class: ER4043
AWS: A5.10

Conforms to Certification: AWS A5.10 | ASME SFA A5.10

Weld Process: Mig (GMAW)

AWS Chemical Composition Requirements
Si = 4.5 – 6.0 Mg = 0.05 max
Fe = 0.80 max Zn = 0.10 max
Cu = 0.30 max Ti = 0.20 max
Mn = 0.05 max Al = Remainder
Be = 0.0003 max Other = 0.05 each – 0.15 total
Available Sizes
.030x 1#spool .035x 1#spool 3/64x 1#spool 1/16x 16#spool
.030x 16#spool .035x 16#spool 3/64x 16#spool 1/16x 20#spool
3/64x 20#spool

ER4043 aluminum filler materials are silicon-aluminum types for welding of 6052 and 6063 types; in some cases, other aluminums are also welded with this type. Brazing of 1100 and 3003 can be accomplished with free flowing 4043 composition.

  • Welding Filler Wire
  • Spray and Flame Metalizing Wire

The proper choice of aluminum filler metal mainly depends on the base metal properties to be achieved and welding technique. Post weld cracking, corrosion resistance and behavior under elevated temperature also need to be taken into consideration. Cracking usually can be minimized by choosing a filler metal alloy of higher alloy content then the base metal.

Deposited Chemical Composition % (Typical)
Deposited chemistry is influenced by many factors so no typical analysis can be recorded.

Deposited All Weld Metal Properties %

Deposited all weld metal properties are influenced by many factors such as weld process used, so no typical weld metal properties can be reported.

Deposited Charpy-V-Notch Impact Properties %
Not applicable