What is Harris E6011 used for?

Harris E6011 is a general-purpose mild steel SMAW electrode used for all-position welding on mild steel, galvanized steel, and light-to-medium rusty or dirty base metal. Common applications include structural repair, farm equipment maintenance, shipbuilding, barge fabrication, and field welding where AC transformer welders are in use.

Can Harris E6011 run on AC welders?

Yes — E6011 is specifically designed to run on AC (alternating current) welders, including conventional transformer-type buzz-box machines. The cellulosic coating includes potassium compounds that stabilize the arc during the polarity reversals of AC current. It also runs on DCEP (DC electrode positive), making it compatible with inverter and engine-drive welders set to reverse polarity.

What is the difference between E6010 and E6011?

E6010 and E6011 are both cellulosic, deep-penetrating electrodes for mild steel, but E6010 requires DCEP (DC reverse polarity) only, while E6011 adds potassium stabilizers to the coating that allow it to run on AC as well. In practice, E6011 is used as the AC-compatible alternative to E6010 when only a transformer welder is available. On DC, E6010 typically produces slightly deeper penetration and a crisper arc; E6011 on DC is comparable but may be marginally softer.

What amperage should I use for Harris E6011?

Use 60–80 A for 3/32 in diameter, 80–125 A for 1/8 in diameter, and 130–160 A for 5/32 in diameter. Start near the middle of the range for flat position and reduce by approximately 15% for vertical-up and overhead positions. If the arc is unstable or the rod sticks frequently, increase amperage; if spatter is excessive or the bead is undercut, reduce amperage.

Can Harris E6011 weld rusty or galvanized steel?

Yes — the cellulosic coating on E6011 tolerates light-to-medium rust, mill scale, galvanized zinc coating, and painted surfaces better than rutile (E6013) or low-hydrogen (E7018) electrodes. For galvanized steel, remove heavy zinc buildup at the weld zone where practical and weld in a well-ventilated area to avoid zinc oxide fume exposure. On heavily contaminated material, expect slightly more porosity; grinding back to clean metal is always the best practice for critical welds.