ER70S-6 Mild Steel MIG Welding Wire Wire Diameter: .035" inches (0.9mm) Weight: 44-lbs Roll  Measurements: 10.5" inch - Spool Diameter 2" inch - Center Hole (Hub) Diameter 4" inch - Wide Spool It can be used in tee welding of carbon steel and low alloy steel in the corresponding strenght grade. The Roll comes packed in moisture-resistant plastic film. Deposited chemical composition: (wt%) C: 0.08 / Mn: 1.50 / Si: 0.89 / Cr: 0.02 / Ni: 0.03 Mo: 0.002 / P: 0.013 / S: 0.012 / V: 0.003 / Cu: 0.11