How Do You Read the Tensile Strength and Position Digits in E6013 and E6010?
The “60” and “1” in E6013 and E6010 mean the same thing. Their final digits separate two different electrode families.
For a buyer, reading the shared digits correctly prevents two common errors: treating 60 as a steel grade, or treating “all-position” as unrestricted project approval.
Both designations describe covered carbon steel stick electrodes under AWS A5.1/A5.1M. Let us read their strength and position information without overpromising performance.
What Does “60” Say About Tensile Strength?
The E stands for electrode. The next two digits, 60, indicate a 60,000 pounds-per-square-inch minimum tensile strength class.
This figure refers to weld metal tested under the classification requirements. It does not describe the diameter, length, or strength of the rod’s steel core.
Tensile strength describes resistance to being pulled apart during a test. Here, the classification concerns deposited weld metal, not every finished structure.
A finished weld is affected by base metal, joint preparation, welding parameters, and workmanship. A classification value alone cannot guarantee an installed joint.
Do not read 60,000 psi as a target amperage. Welding current is given separately for each product size and machine setup.
The number is not a pipe grade, either. Base material specifications and filler-metal classifications play different roles in a welding procedure.
A supplier’s data sheet may list a typical tensile strength above the minimum. “Typical” is not identical to a guaranteed value for every delivery.
When a tender asks for minimum mechanical properties, read the exact acceptance wording. Determine whether classification compliance or lot-specific tests are required.
The AWS specification also has metric designations. Avoid making an improvised metric code by simply converting 60,000 psi and changing the label.
The specification says its customary and SI systems should be applied independently. Quote the designation and measurement system requested by the contract.
Buyers comparing E6013 and E6010 sometimes stop at “E60.” That only tells them the shared strength class, not which rod fits the weld.
If an engineering document calls for a different strength class, do not automatically upgrade or substitute. Ask the responsible engineer to approve the choice.
What Does the “1” Say About Welding Position?
In both E6013 and E6010, the next digit is 1. It identifies an all-position electrode classification.
The main position groups are flat, horizontal, vertical, and overhead. Those terms describe how the weld is oriented during the work.
In flat welding, the joint is mainly below the electrode. In overhead welding, the weld is made above the operator.
Vertical work brings another question: will the weld progress upward or downward? Product guidance and approved procedures may treat those techniques differently.
An all-position classification should not be read as “any direction, every diameter, every weld.” Check the producer’s stated use for the offered size.
One E6013 product may allow vertical down, while another maker may advise against it. The shared classification does not replace the product instructions.
Joint type also matters. A rod that works in an overhead fillet test is not automatically approved for every overhead pipe joint.
For bid documents, copy the welding position specified by the end user. Do not use a broad “all-position” claim to bypass the project procedure.
Diameter can change handling. Ask for a relevant sample if the customer needs a particular position with a larger rod.
When the end user reports a failed position trial, document the technique, settings, polarity, and material. That evidence is better than assuming a false classification.
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Why Do the Final Digits Still Matter?
After E, 60, and 1, the codes separate: E6013 ends in 3, while E6010 ends in 0.
The 0 in E6010 corresponds to a high-cellulose sodium covering and DC electrode-positive current. The arc is commonly chosen for penetrating pipe root work.
The 3 in E6013 corresponds to a high-titania potassium covering. It is commonly called a rutile-type electrode and usually gives a softer-running arc.
E6013 products commonly offer AC operation. For any proposed DC polarity, check the actual manufacturer’s data sheet rather than assuming every product behaves alike.
Lincoln Electric’s general classification guide lists AC and DC+ for the type. Its separate E6013 product sheet also lists DC- for that specific product.
This difference in published product information shows why a classification shorthand should not replace an individual product sheet.
A customer needing E6010 for a qualified pipe root pass cannot simply accept E6013 because both carry “60” and “1.”
Likewise, an AC-only site cannot assume E6010 is suitable because both rods are described as all-position.
Position classification and power-source compatibility answer different questions. A buyer has to check both before authorizing a substitution.
How Can Procurement Teams Avoid Code Mistakes?
Put four pieces of information on the request: the governing standard, full classification, electrode size, and planned position.
Then add the available power source and required polarity. This is especially important if the site has only AC machines.
If the customer specifies a welding procedure, ask for its approved filler metal and position limits. A catalog description should not override that document.
Check the product data sheet for current range and operating position. Use the proposed manufacturer’s sheet, not an unrelated brand’s settings.
For a tender, request the exact evidence needed: specification sheet, lot identification, test report, or approval sample as applicable.
Ask whether “minimum strength” refers to the classification or a separate job-specific test. Confusing those points can create a noncompliant bid.
Avoid writing “all positions guaranteed” on the quotation. State the classification and any maker-specific limitations accurately.
Keep sample results tied to the diameter, machine, and position tested. A successful flat-weld trial may not settle an overhead performance complaint.
For replenishment, compare the new batch with the originally approved product and documentation. A familiar code alone does not ensure identical handling.
The practical rule is simple: 60 describes the weld metal strength class, and 1 describes all-position classification for both E6013 and E6010.
Their final digits still change coating and current behavior. Send us the full code, required position, and machine details for a targeted quote.
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