What electrode do I use for stick welding mild steel?

E7018 is the most widely used electrode for structural mild steel welding. It produces a smooth, clean weld with low hydrogen content, meeting most structural welding code requirements. E6010 is used for pipeline root passes and out-of-position welding where penetration is critical. E6013 suits general-purpose and maintenance welding where code compliance is not required.

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How to Choose a Stick Welder

1. AC vs DC output

DC welders provide a smoother, more stable arc and work with a wider range of electrodes including E6010 (pipeline root pass). AC welders are less expensive and suit basic structural work with E6013 and E7018 electrodes. For field pipe welding, DC is required.

2. Inverter vs transformer

Inverter stick welders are lightweight and portable — the Lincoln Invertec V350-PRO weighs 42 lbs vs 200+ lbs for an equivalent transformer unit. Transformer-based machines are virtually indestructible in harsh environments and have lower purchase cost.

3. Hot start and arc force controls

Hot start boosts amperage during arc initiation to prevent sticking. Arc force (dig) increases amperage when the arc length shortens, preventing electrode sticking mid-weld. These features significantly improve usability, especially for less experienced operators.

Buying Tip

Pro tip: For field structural work, the Lincoln Invertec V350-PRO strikes the best balance of portability (42 lbs), versatility (MIG/TIG/Stick), and ruggedness. Add a remote amperage control for out-of-position work.

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Frequently Asked Questions

For structural steel welding to AWS D1.1, a DC stick welder capable of running E7018 low-hydrogen electrodes at 3/32" to 1/8" is standard. The Lincoln Invertec V350-PRO or Miller Maxstar 280 are industry standards for field structural work. Both provide DC output, are portable, and support the full range of structural electrodes.

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How to Choose a Stick Welder

1. AC vs DC output

2. Inverter vs transformer

3. Hot start and arc force controls

Buying Tip

$0 Sales Tax on All Stick / Arc Welders Equipment

Frequently Asked Questions

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