Aluminum - Tig Rod
Aluminum TIG welding rod (GTAW filler, AWS A5.10) from HYW Products in general-purpose ER4043 and high-strength ER5356. Choose ER4043 for smooth, crack-resistant welds on 6xxx castings and extrusions, or ER5356 for strength, marine service, and anodize color match. Supplied in 36" cut lengths under 100% argon on AC; sizes 1/16", 3/32", 1/8".
Buying guide, comparison chart & FAQ — click to expand
| Rod | AWS | Alloy | Best For |
|---|---|---|---|
| ER4043 | A5.10 | Al – ~5% Si | General-purpose; 6xxx alloys; smooth, crack-resistant |
| ER5356 | A5.10 | Al – ~5% Mg | Higher strength; marine/5xxx; anodize color match |
Aluminum TIG runs on AC with 100% argon. Clean the base metal and use a clean stainless brush dedicated to aluminum for sound, porosity-free welds.
Shop by Rod
- › ER4043 TIG Rod — general-purpose Al-Si filler
- › ER5356 TIG Rod — high-strength Al-Mg filler
Frequently Asked Questions
ER4043 vs ER5356 for TIG?
ER4043 (Al-Si) is smoother and more crack-resistant — ideal for 6xxx castings and extrusions like 6061. ER5356 (Al-Mg) is stronger, resists saltwater corrosion, and color-matches anodizing — the choice for marine and 5xxx work.
What polarity for aluminum TIG?
AC (alternating current) with 100% argon. AC provides the cleaning action that breaks up aluminum's oxide layer during welding.
Also see: Aluminum MIG Wire
