A stick-electrode class is a useful identifier, but it is not a complete instruction for choosing a rod. Lincoln Electric’s catalog ties each classification to product names and polarity options. The table below shows selected Lincoln examples for E6010, E6011, E6013, and E7018. Confirm the exact rod, position, power source, and qualified welding procedure before applying any setting.

Selected stick welding electrode classifications

How to use the classification

The leading “E” identifies a covered electrode in the AWS classification system. The first two digits in these four-digit examples indicate the nominal minimum tensile-strength class in ksi: 60 for E6010, E6011, and E6013; 70 for E7018. The following digit and suffixes also carry meaning under the applicable AWS specification, but selection must use the complete classification and product data rather than a partial code interpretation.

For example, Lincoln lists Fleetweld 5P as E6010 with DC+ polarity, Fleetweld 35 is E6011 and is listed for AC or DC±. Shared class numbers do not guarantee that two products have the same operating window or deposit characteristics; use the current manufacturer sheet for diameter-specific current ranges and handling instructions.

Position and application matter

Electrode selection starts with the joint and welding position. Lincoln groups E6010/E6011 as high-speed electrodes that operate in all positions, while noting their common use for downhill, horizontal, or flat work. E6013 is another all-position choice with different arc and penetration behavior. E7018 products are commonly selected for low-hydrogen work and have distinct handling and storage requirements. Check the current manufacturer sheet for exact product features and required moisture control.

Then verify the base metal, thickness, joint preparation, machine output, polarity, and code requirements. A number in an electrode class does not establish that a weld meets structural, pressure, or seismic requirements. If a drawing or governing code requires a qualified WPS, use the approved procedure and its essential variables.

Worked selection check

Suppose a 1/8-inch electrode is specified for a mild-steel repair in a position covered by the applicable procedure. If the procedure calls for E6011 and the machine supports AC, the Lincoln table identifies Fleetweld 35 as one matching product and notes that the product can use AC or DC±. Set the machine within the WPS and product range, then follow the required preparation, technique, and inspection. The catalog lookup alone cannot approve the repair or set voltage, travel speed, or preheat.

Two common mistakes

Do not assume E6010 and E6011 are interchangeable because both begin with “E60” or share a position category. Their classification and polarity requirements differ. Also, do not choose amperage from a neighboring diameter: a 3/32-inch rod and a 1/8-inch rod have different current ranges, and the product maker may provide different ranges for AC and DC conditions.

Product examples and settings are from Lincoln Electric’s Stick Electrode catalog. AWS class requirements and the governing WPS take precedence for production work.

Check the full product designation

The AWS class is only one identifier on the package. Product suffixes and supplemental designators may identify additional requirements or test properties. Match the exact designation on the consumable to the WPS and material specification; if the required classification is absent or ambiguous, ask the welding engineer or supplier before substituting. Keep the manufacturer’s product sheet available with the job record.

Polarity capability is not a substitute for machine setup instructions. Confirm the electrode holder connection, open-circuit voltage, current range, and storage limits with the exact product sheet. For low-hydrogen electrodes, exposure control and rebaking rules can be essential to meeting the procedure. This chart helps identify product examples by class; it cannot authorize a repair or establish code compliance.

The classification requirements are set out in AWS A5.1/A5.1M:2025. A public FHWA welding manual explains common digit meanings with E7018 as an example. Use the full current standard and exact Lincoln product sheet when a classification detail controls the work.