Techniweld 40430351 Aluminum Welding Wire, Diameter: 0.035 Inch, Package: 1 lb Spool, Welding Process: MIG (GMAW And SAW), Weld Metal Composition: Balanced Aluminum (Al), 0.35% Chromium (Cr), 6.8% Copper (Cu), 0.95% Iron (Fe), 5.5% Magnesium (Mg), 1% Manganese (Mn), 13% Silicon (Si), 0.0008% Beryllium (Be), 0.2% Titanium (Ti), 0.15% Vanadium (V), 0.3% Zinc (Zn)