3100 is our moisture-proof extruded Aluminum DC welding rod. Use it on truck and trailer bodies, foundry castings, aluminum angle iron, tubing, and build-up. 3100 has easy slag removal and is a smooth-running aluminum electrode.
Use a short arc and hold the electrode vertically. Preheat slightly (200°F-300°F) when working with heavier sections. This will provide better performance. For best results, wash in warm water after flux removal.
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