Lincoln Electric IronArc™ 7018 MR® Stick Welding Electrodes – ED040000-1
Product Overview
Get dependable welding performance with Lincoln Electric IronArc™ 7018 MR® Stick (SMAW) Electrodes, ED040000-1. Designed for mild steel welding, this low-hydrogen electrode combines a soft, smooth arc with excellent puddle control to help welders produce consistent, clean-looking welds across demanding fabrication and repair applications.
The IronArc 7018 MR is particularly well suited to pipeline work, pipe repair, structural fabrication, pipefitting, and boiler or pressure-vessel fabrication and repair. Its flat bead profile and excellent wetting at the weld toes make it a practical option for cap passes, groove welds, and pipe repair where bead appearance and operator control matter.
With its AWS E7018 H4R classification, this electrode is designed for applications requiring low diffusible hydrogen characteristics. Its moisture-resistance design does not rely on an intentional addition of zinc. The result is an electrode developed to support dependable welding performance when handled and used according to Lincoln Electric’s recommendations and the applicable welding procedure.
The ED040000-1 package contains 3/32-inch x 14-inch electrodes in a 30 lb carton containing ten easy-open cans, making it convenient for welding shops, contractors, maintenance teams, and field crews that prefer smaller, manageable packages.
Key Features and Benefits
- Low-hydrogen electrode: AWS E7018 H4R classification for suitable welding applications requiring low diffusible hydrogen.
- Soft, smooth arc: Supports comfortable operation and controlled puddle manipulation.
- Excellent toe wetting: Helps achieve good weld profile and tie-in at the edges of the bead.
- Flat bead profile: Useful for cap passes on pipe, groove welds, and pipe repair.
- Moisture-resistance design: No intentional addition of zinc for moisture resistance.
- Versatile applications: Suitable for pipeline and pipe repair, structural fabrication, pipefitting, and general fabrication.
- Flexible power-source options: Can operate on AC or DC electrode-positive (DC+), subject to the manufacturer’s recommended settings.
- Convenient packaging: Ten easy-open cans in a 30 lb carton.
- Trusted manufacturer: Manufactured by Lincoln Electric, a recognized name in welding equipment and consumables.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Lincoln Electric |
| Product family | IronArc™ 7018 MR® |
| Product number | ED040000-1 |
| Welding process | Stick welding (SMAW) |
| Electrode classification | AWS E7018 H4R |
| CSA classification | E4918-H4R |
| Material type | Mild steel |
| Electrode diameter | 3/32 in (2.4 mm) |
| Electrode length | 14 in (350 mm) |
| Package weight | 30 lb (13.6 kg) |
| Package format | Carton containing 10 easy-open cans |
| Welding positions | All positions except vertical down |
| Polarity | AC or DC+ |
| Typical current range, DC+ | 70–110 A |
| Typical current range, AC | 80–120 A |
| Primary applications | Pipeline repair, pipefitting, structural and general fabrication |
Important: Welding current depends on the electrode diameter, joint design, material thickness, welding position, and procedure. Follow the current Lincoln Electric product data sheet and your qualified welding procedure.
Download Lincoln Electric IronArc™ 7018 MR® Stick Welding Electrodes – ED040000-1 Specification sheet
What Makes IronArc 7018 MR a Good Choice?
Smooth Arc and Better Puddle Control
The IronArc 7018 MR is designed to provide a soft, smooth arc that helps the welder control the molten puddle. This is especially useful when producing consistent beads or working on joints where a controlled profile is important.
Excellent Weld-Toe Wetting
Good wetting at the weld toes helps the bead blend into the base material. This characteristic is useful for cap passes and groove welds where bead appearance and proper tie-in are important.
Designed for Demanding Fabrication Work
From pipe repair to structural fabrication, the IronArc 7018 MR is designed for applications that require a mild-steel low-hydrogen electrode. Always confirm that its classification meets the mechanical-property, impact, and service requirements of your job.
Practical Packaging for Welding Teams
The ED040000-1 package provides ten easy-open cans within a 30 lb carton. This format can help teams organize consumables and open smaller quantities as needed. Follow Lincoln Electric’s storage and handling instructions to protect electrode performance after opening.
Common Applications
Pipeline and pipe repair: Suitable for specified pipeline maintenance, pipe repair, and integrity work when the electrode meets the welding procedure requirements.
Structural fabrication: An option for appropriate mild-steel structural welding applications.
Pipefitting: Designed for pipefitting tasks where an E7018 H4R electrode is specified.
Boiler and pressure-vessel work: May be used in qualified fabrication or repair procedures where its classification and properties meet the applicable code and job requirements.
General fabrication and maintenance: A useful consumable for suitable mild-steel welding tasks in fabrication shops and maintenance environments.
Frequently Asked Questions
What does E7018 H4R mean?
E7018 is a mild-steel electrode classification under AWS A5.1. The H4R designation identifies additional requirements for diffusible hydrogen and moisture resistance. Confirm the applicable standard and manufacturer documentation when working on code-controlled projects.
What is the difference between IronArc 7018 MR and a standard 7018 electrode?
IronArc 7018 MR is designed with a soft, smooth arc, good puddle control, excellent toe wetting, and a flat bead profile. These characteristics may be useful for pipe cap passes, groove welds, and repair work. Compare the exact classifications and technical data before substituting one electrode for another.
Can these electrodes be used with AC and DC welders?
Yes. Lincoln Electric lists both AC and DC+ as operating options. Use the appropriate amperage for the electrode size and follow the manufacturer’s recommendations.
What is the recommended amperage for the 3/32-inch electrode?
Lincoln Electric lists a typical range of 70–110 amps for DC+ and 80–120 amps for AC. Actual settings depend on the application and welding procedure.
What comes with product ED040000-1?
This product number corresponds to 3/32-inch x 14-inch IronArc 7018 MR electrodes packaged as a 30 lb carton containing ten easy-open cans. Confirm the product label and package details before ordering.
How should IronArc 7018 MR electrodes be stored?
Keep the electrodes protected from moisture and contamination and follow Lincoln Electric’s product-specific storage, exposure, and handling instructions. Even moisture-resistant electrodes should not be stored or handled carelessly, particularly when welding procedures impose strict hydrogen-control requirements.
Order Lincoln Electric IronArc 7018 MR from Welder Vault
If your welding work calls for a low-hydrogen mild-steel electrode with smooth arc characteristics and excellent toe wetting, the Lincoln Electric IronArc 7018 MR, ED040000-1 is worth considering.
Welder Vault helps welding professionals find equipment and consumables for fabrication, maintenance, and repair. Contact us for current pricing, availability, and shipping information.
Before ordering, confirm the electrode classification, package quantity, and application requirements to ensure this product is the right fit for your project.
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