ER4043 is a general-purpose type aluminum welding wire which contains 5% silicon additives, resulting in outstanding fluidity ... Mainly applied in the industry of chemical, mold, furniture, containers, etc. Main characteristics 1. Low welding costs. 2. Excellent fluidity. 3. Outstanding ... permeability 4. High stability . 5. Easy to operate. All-position welding. 6. Wide applicability. Chem contents: Si: