Thin sheet can burn through or distort when an electrode is too large, the arc is held too long, or heat input is not controlled. Lincoln Electric’s Stick Electrode Welding Guide gives a product-specific Fleetweld 5P/5P+ E6010 corner-weld procedure for 18- through 10-gauge sheet. The table below shows the guide’s 0-30-degree downhill current entries and approximate AC E6011 substitutions for that joint and electrode; it is not a universal electrode-selection chart or a welding procedure specification.
Selected Lincoln thin-sheet settings
The DC values below are Lincoln’s 0-30-degree downhill current entries for its corner-weld procedure and gauge sequence. The AC E6011 column applies the guide’s note that an E6011 substitute uses about 10% higher current; values are rounded to the nearest 5 amperes for quick comparison. Consult the full guide for other joint types, position ranges and procedure requirements.
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The manufacturer’s table labels the listed electrodes Fleetweld 5P or 5P+, class E6010. Its sheet-gauge mapping is tied to that product and the guide’s joint procedure. It should not be generalized to every E6010 brand, joint design, welding position or machine. The separate Hobart catalog is useful for checking that another manufacturer’s E6011 operating range may be different; do not merge unrelated brands’ recommendations into one supposedly universal setting.
Match the complete procedure
Confirm the actual sheet thickness with a measurement when the material is painted, coated, corroded or from an unknown source. Gauge numbers are not a single universal thickness standard across all metals. Verify the base-metal specification, joint fit-up, backing, weld size, position and service requirement before selecting a process. A lap, corner and groove weld can have different heat flow and burn-through risk even at the same nominal gauge.
Use the electrode diameter and polarity specified by the procedure. Lincoln identifies electrode-positive DC for the listed E6010 application and says E6011 can be used when only AC output is available at about 10% higher current. That substitution note belongs to this product procedure; it does not mean any electrode labeled E6011 will perform identically. Check the electrode manufacturer’s datasheet, machine output and qualified procedure.
Current is only one control. Travel speed, arc length, electrode angle, joint gap, tack spacing, sequence and interpass temperature all influence heat input and distortion. Thin sheet often benefits from short weld segments and a planned sequence, but the correct method depends on the joint and acceptance criteria. Practice on matching scrap, inspect the result and adjust only within an approved procedure.
When this reference is not enough
The cited guide says overhead welding is not recommended on 18-gauge and thinner material in this application, and it provides separate current values for another downhill angle range. Do not use the 0-30-degree column for overhead, vertical-up, a different weld type or a structural code job. Consult the full Lincoln guide and the governing WPS or ask a qualified welding professional when the joint carries a safety-critical load.
Before welding, remove coatings and contaminants only using an appropriate safe method, secure the work, protect nearby materials and use the required ventilation and personal protective equipment. Base-metal coatings and electrode fumes can create serious hazards. Follow the current safety data sheets, workplace controls and applicable welding requirements.
Record the electrode classification and brand, diameter, polarity, current range, base material, joint, position and inspection outcome with the work. That makes it possible to reproduce a successful setup and identify why a future repair differs. If the sheet, fit-up or service changes, re-evaluate the procedure rather than relying on this small reference table.
For adjacent shop references, see our sheet-metal gauge chart, cutting-torch tip chart, and benchtop drill-press guide.
Sources
Lincoln Electric’s Stick Electrode Welding Guide supplies the product-specific gauge, diameter, position and DC current values. Its E6011 note describes an approximate 10% increase for the stated procedure. Hobart Brothers’ catalog illustrates why a separate maker’s product ranges should not be substituted without checking its own data.
