Availability: 6 in stock
4043 is the most versatile aluminum filler rod and can be used for most applications including 3003, 6061 and a355 aluminum castings.
How To Select Filler Rod
The thickness of the metal being welded will determine the diameter of the rod.
045” diameter filler rod for thin sheet metal
1/16” diameter filler rod for welding metal 1/8” thick or less 3/32” diameter filler rod for welding metals thicker than 1/8”.
Match the alloy you’ll be welding to the filler rod. Here are some common applications:
ER70S-2 – Mild steel and 4130 chrome moly tubing
4043 – Aluminum ER308L – Stainless Steel Silicon Bronze – Used for brazing and even combining dissimilar metals like copper to steel
It’s usually a great idea to have a tube of a few kinds available because you never know what kinds of projects you’re going to run into. Plus our filler rods come in convenient tubes that allow you to easily open and close to keep your filler rods clean and free of contaminants.
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