ER70S-6 Mild Steel MIG Welding Wire Wire Diameter: .035″ inches (0.9mm) Weight: 20-lbs (2 Rolls – 10-lbs each)  Measurements: 8″ inch – Spool Diameter 2″ inch – Center Hole (Hub) Diameter 2″ 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