Lincoln Electric IronArc™ 7018 MR® Stick Welding Electrode, 3/32″ × 14″, 50 lb Easy-Open Can – ED040000
Product Overview
Get smooth arc performance and dependable weld control with the Lincoln Electric IronArc™ 7018 MR® Stick (SMAW) Electrode, 3/32″ × 14″, 50 lb Easy-Open Can. Designed for mild-steel welding, this low-hydrogen electrode is a practical choice for pipeline repair, pipefitting, structural fabrication, pressure-vessel work, and general metal fabrication.
The IronArc 7018 MR is designed for welders who value a soft, smooth arc, easy puddle manipulation, and excellent wetting at the weld toes. Its flat bead profile makes it particularly useful for pipe cap passes, groove welds, and repair applications where consistent bead appearance and good tie-in matter.
Classified as AWS E7018 H4R, this electrode is designed to meet the applicable low-hydrogen and moisture-resistance requirements of its classification. It is suitable for AC or DC electrode-positive (DC+) operation, giving welders flexibility when working with compatible welding power sources.
Packaged in a 50 lb easy-open can, the Lincoln IronArc 7018 MR is well suited to fabrication shops, maintenance departments, contractors, and field crews that regularly use 3/32-inch electrodes.
Key Features and Benefits
- AWS E7018 H4R classification: A low-hydrogen mild-steel electrode for applications requiring this classification.
- Soft, smooth arc: Helps provide controlled puddle manipulation and a comfortable welding experience.
- Excellent toe wetting: Helps the weld bead blend into the base material.
- Flat bead profile: Useful for pipe cap passes, groove welds, and pipe repair.
- Moisture-resistance design: No intentional addition of zinc for moisture resistance.
- AC or DC+ operation: Compatible with appropriate AC or DC electrode-positive welding setups.
- 3/32-inch diameter: Suitable for applications where a smaller electrode and controlled heat input are appropriate.
- 14-inch length: A standard length for practical handling in shop and field environments.
- 50 lb easy-open can: Convenient bulk packaging for regular welding operations.
- Lincoln Electric quality: Part of Lincoln Electric’s IronArc family of stick welding electrodes.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Lincoln Electric |
| Product family | IronArc™ 7018 MR® |
| Manufacturer part number | ED040000 |
| Welding process | Stick welding (SMAW) |
| Electrode classification | AWS A5.1 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 | 50 lb (22.7 kg) |
| Packaging | Easy-open can |
| Polarity | AC or DC+ |
| Typical DC+ amperage | 70–110 A |
| Typical AC amperage | 80–120 A |
| Welding positions | All positions except vertical down |
| Typical applications | Pipeline repair, pipefitting, structural and general fabrication, pressure-vessel work |
Operating ranges and suitability depend on the welding procedure, base material, joint design, and application. Always consult the current manufacturer data sheet before use.
Designed for Practical Welding Performance
Smooth Arc and Puddle Control
A stable, controllable arc can make a difference when producing consistent welds. IronArc 7018 MR is designed to provide a soft arc and smooth transfer, helping welders manipulate the puddle and maintain control throughout the pass.
Excellent Wetting at the Weld Toes
Good toe wetting helps the weld bead transition into the base material. This characteristic is useful in cap passes and groove welds, where bead profile and tie-in are important.
A Useful Option for Pipe Repair
Lincoln Electric identifies pipeline work, pipe repair, and integrity work among the intended applications for the IronArc 7018 MR family. Its characteristics make it worth considering when the specified welding procedure calls for an E7018 H4R electrode.
Suitable for Fabrication and Maintenance
Beyond pipe applications, this electrode can be used for appropriate structural fabrication, pipefitting, pressure-vessel fabrication and repair, and general mild-steel welding. Always confirm that the electrode meets the project’s code and procedure requirements.
Why Choose the 3/32-Inch Diameter?
The 3/32-inch electrode is useful when the application calls for a smaller-diameter electrode and the current range appropriate to that size. It may be a good fit for thinner material, smaller joints, or welding situations where controlled deposition is important.
The correct diameter depends on material thickness, joint configuration, welding position, required deposition rate, and the qualified welding procedure. A larger electrode is not automatically better, and the smallest electrode is not suitable for every joint.
Storage and Handling
E7018 H4R is a low-hydrogen electrode classification. Proper storage and handling are important, particularly for work involving strict hydrogen-control requirements.
- Keep the can sealed until the electrodes are needed.
- Store electrodes in accordance with Lincoln Electric’s instructions.
- Protect opened electrodes from moisture and contamination.
- Follow the applicable manufacturer’s recommendations for exposure time, holding ovens, and reconditioning.
- For code-controlled work, comply with the applicable welding procedure and project requirements.
Do not assume that moisture resistance eliminates the need for proper handling.
Frequently Asked Questions
What is the Lincoln IronArc 7018 MR electrode used for?
It is a low-hydrogen mild-steel stick electrode intended for pipeline and pipe repair, pipefitting, structural fabrication, pressure-vessel fabrication and repair, and general fabrication where the E7018 H4R classification is suitable.
Related products
Lincoln Pipeliner Arc 80 electrode
Lincoln Electric IronArc™ 7018 MR® Stick Welding Electrodes – ED040000-1
What does E7018 H4R mean?
E7018 identifies the electrode’s classification under AWS A5.1. H4R indicates additional requirements associated with diffusible hydrogen and moisture resistance. Check the applicable standard and manufacturer’s technical documentation for the requirements relevant to your project.
Can it run on AC and DC?
Yes. Lincoln Electric lists AC and DC+ as operating options for IronArc 7018 MR. Use the recommended current range for the selected power source and electrode size.
What amperage should I use for the 3/32-inch electrode?
Lincoln Electric lists typical operating ranges of 70–110 amps on DC+ and 80–120 amps on AC. The correct setting depends on the application and welding procedure.
How much product is included?
This version contains a net weight of 50 lb in one easy-open can. Confirm the package label and SKU before ordering.
Is ED040000 the same as ED040000-1?
No. ED040000 identifies the 3/32″ × 14″ electrode in a 50 lb easy-open can. ED040000-1 identifies a 30 lb carton containing ten easy-open cans. Make sure you select the package format you need.
Order Lincoln Electric IronArc 7018 MR from Welder Vault
When your project calls for a low-hydrogen mild-steel electrode with smooth arc characteristics and excellent toe wetting, the Lincoln Electric IronArc 7018 MR, 3/32″ × 14″, 50 lb Easy-Open Can is an option worth considering.
Contact Welder Vault for current pricing, availability, and shipping information. Before placing an order, verify the electrode classification, package size, and welding requirements for your application.
Useful Info
promotions.lincolnelectric.com — official product-family overview and key features.
ch-delivery.lincolnelectric.com — classification, package sizes, operating ranges, and mechanical properties.
aws.org — standards and welding-industry resources.
cwbgroup.org — welding certification and standards resources relevant to applicable CSA
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