No fluxes and no fumes are required (however, you can use some flux if you feel it will do a better job). These welding rods make a sound joint, stronger than the parent metal and can join thin and thick parts together. Its corrosion resistance is excellent and has minimal or no distortion to the parent material.
The Easy Welding Rods are high-quality special Aluminum-alloy rods used to weld/braze primarily Aluminum and Aluminum alloys but can be used to braze any other non-ferrous materials except for stainless steel.
Recommended for welding or brazing aluminum alloy: 1060, 1350, 3003, 3004, 3005, 5005, 5050, 6053, 6061, 6951, 7005, and cast alloys 710.0 and 711.0