Current 4043 and 4643 applications, welding 1xxx, 3xxx, 5xxx with less than 3.0% Mg (example 5052)
& 6xxx series base metals
• Post weld age, post weld heat treat & age applications

• Aerospace hardware

• Ship decks
• Automotive/motorcycle frames

• Ladders and frames

• Furniture
• Sports products - scooters/bicycles

• Alloy 356 castings
• General repair and maintenance

• Wheels

Main Application

TYPICAL CHEMICAL VALUES*

Welding Positions:

• AWS A5.10, ER4943, R4943
• ASME SFA 5.10, ER4943, R4943
• SFA 5.10
• CWB, ER4943 (0.9 mm - 1.6 mm)
• ABS, ER4943, 100% Ar or Ar/He Mix (0.035” - 0.062”)
• ABS, R4943, 100% Ar (0.062” - 0.156”)
• vd TUV 1153

Maintaining a proper welding procedure - including pre-heat and interpass temperatures - may be
critical depending on the type and thickness of aluminum being welded.

See Above: This information was determined by welding using 100%Argon shielding gas with a flow rate between
35-50 cfh (14-24 l/min).

AVAILABLE DIAMETERS AND PACKAGES: For a complete list of diameters and packaging, please contact.

Classification:
AWS A5.10: ER4943, R4943

MaxalTig

CONFORMANCES AND APPROVALS

TYPICAL PROPERTIES

Description

Alloy 4943 filler metal was formulated to be welded with the same weld procedure specifications as 4043 and 4643, and does not depend upon dilution from the base metal during welding to increase the strength of the weld deposit, while maintaining the same weld characteristics and benefits of 4043 and 4643.

BENEFITS

• Post weld fully heat treatable requiring no base

• Excellent corrosion resistance

• Low shrinkage rate/reduced distortion

• Low hot cracking sensitivity in most applications

• 25% higher UTS & 50% higher yield strength than 4043 in 
the as welded condition (typical) metal dilution
• Moderate/high strength (35 ksi typical) 
• Low melting temperature/high fluidity
• Low welding smut and discoloration 
• Low ductility, formability and lower toughness (similar to 4043)
• Moderate electrical conductivity and thermal conductivity

FEATURES

100% Argon (Ar) or Argon/Helium mixtures, typical: GMAW - 35-50 cfh (14-24 l/min),

GTAW 20-30 cfh (10-14 l/min).

Direct Current Electrode Positive (DCEP) for GMAW, AC for GTAW

0.030” (0.8 mm), 0.035” (0.9 mm), 3/64” (1.2 mm), 1/16” (1.6 mm), 3/32” (2.4 mm),
1/8” (3.2 mm), 5/32” (4.0 mm)

Product should be stored in a dry, enclosed environment, and in its original intact packaging

STORAGE

STANDARD DIAMETERS

TYPE OF CURRENT

SHIELDING GAS