Product Features:ER5356 aluminum MIG Gas Metal Arc Welding (GMAW) welding wire5 percent magnesium contenta bright finishFlows freely at 1,180 degrees F (637.8 degrees C) Required Shielding Gas: Argon Recommended Polarity: Direct Current Electrode Positive (DCEP) ReverseDiameter (Inches): .035 inchWeight lbs. (Kg): 1 (.453) Tensile Strength (PSI): 63,000