Forney 30685 Low Hydrogen AC Welding Rod, 1/8" Dia, E7018E7018 AC mild steel "Low Hydrogen" welding rods easily produce quality results on smaller amperage AC DC welders. It is suitable for all positions on hardenable steels where no pre heat is used and on cold rolled steels normally exhibiting excessive porosity when welded with conventional rod. The low hydrogen content reduces cracking and peeling of the weld material. Features excellent restart capability. Designed for welding low, medium and high