Eagle ER4043 Aluminum TIG Rod | General-Purpose Aluminum Filler Rod

Eagle ER4043 TIG Rod is recommended for:

6061 aluminum
6063 aluminum
3003 aluminum
3004 aluminum
5052 aluminum
Cast aluminum
General aluminum fabrication
Aluminum repair
Automotive and motorcycle components
Bicycle frames
Pressure vessels
Maintenance welding
General TIG welding

Especially well suited where good fluidity, reduced hot-cracking sensitivity and smooth weld appearance are important.

Clean the weld area thoroughly before welding.

Remove all oil, grease, lubricants, coatings, dirt and oxide from the aluminum surface.

Use a dedicated stainless steel wire brush for oxide removal and keep the brush reserved for aluminum only to help prevent contamination.

Use 100% Argon shielding gas for typical TIG applications. Argon/helium mixtures may also be used where additional heat input is required.

Use AC current for GTAW/TIG welding of aluminum and adjust amperage according to material thickness, joint design and rod diameter.

Maintain proper torch angle and filler-rod placement while keeping the end of the filler rod within the shielding-gas envelope.

Eagle ER4043 is an aluminum-silicon TIG filler rod containing approximately 5% silicon.

The silicon addition improves fluidity and wetting action, helping the weld puddle flow smoothly while reducing hot-cracking sensitivity in many aluminum applications.

ER4043 also has a relatively low melting temperature and low shrinkage rate, which can help reduce distortion during welding.

Why Eagle ER4043 TIG Rod?

Excellent fluidity — silicon helps the puddle wet and flow smoothly.

Reduced crack sensitivity — well suited to many common aluminum repair and fabrication applications.

Excellent corrosion resistance — suitable for a broad range of aluminum service environments.

Popular for 6061 and 6063 — commonly used on 6XXX-series aluminum.

Excellent for cast aluminum — a common choice for many aluminum casting repairs.

ER4043 TIG or ER5356 TIG?

Choose Eagle ER4043 TIG when you want excellent puddle fluidity, easy welding and reduced hot-cracking sensitivity, particularly for 6061, 6063 and many cast aluminum applications.

Choose Eagle ER5356 TIG when higher strength, greater ductility, marine corrosion resistance or better anodized colour match are more important.

In simple terms:
ER4043 TIG = smooth-flowing general-purpose aluminum filler
ER5356 TIG = higher-strength aluminum-magnesium filler

Process: TIG / GTAW
Current: AC
Shielding Gas: 100% Argon
Typical Gas Flow: 20–30 CFH