The Lincoln Excalibur 7018 MR N Stick (SMAW) Welding Rod is a low-hydrogen moisture-resistant iron-powder SMAW electrode classified to AWS A5.1/A5.1M E7018 H4R — the 'N' (Buy America) variant of the renowned Excalibur 7018 MR series. This electrode delivers all the performance of the standard Excalibur 7018 MR — exceptional moisture resistance, X-ray quality deposits, and outstanding out-of-position operability — while meeting Buy America compliance requirements for federally funded infrastructure and construction projects.
- Classification: E7018
- Alloy class: Mild Steel
- Polarity: DC+ or AC
- Positions: All positions except vertical-down
- Available diameters: 1/8", 5/32", 3/16"
- Process: SMAW
- Classification: E7018
- AWS Classification: AWS A5.1/A5.1M E7018 H4R
- Buy America compliant (N designation)
- Coating: Low-hydrogen iron-powder moisture-resistant (MR) basic
- Polarity: DC+ (DCEP) preferred; AC acceptable
- Positions: All positions except vertical-down
- H4R: ≤4 mL/100g diffusible hydrogen
- Moisture pickup: 60% less than competitive E7018 electrodes
Code-quality fabrication on mild and low-alloy steels in structural construction, bridges, power generation, petrochemical, and infrastructure projects — especially where Buy America provisions apply. Ideal for field work in humid or outdoor environments due to the moisture-resistant H4R coating.
- Buy America compliant — meets federal procurement domestic content requirements
- H4R moisture-resistant coating: 60% less moisture pickup vs. competitive E7018
- X-ray quality weld deposits with superior puddle visibility
- Outstanding out-of-position operability, especially vertical and overhead
- Flexible coating stays intact — eliminates coating chips in field storage
- Certified AWS A5.1: E7018 H4R, ABS, DNV, Lloyds classification societies
| Property | AWS Requirement | Typical |
|---|---|---|
| Tensile Strength | 70 ksi min | 74–87 ksi |
| Yield Strength | 58 ksi min | 60–74 ksi |
| Elongation | 22% min | 24–36% |
| Diameter | Package |
|---|---|
| 1/8" | 50 lb |
| 5/32" | 50 lb |
| 3/16" | 50 lb |
This Combined Listing parent page aggregates all package sizes and diameters for the Lincoln Excalibur 7018 MR N Stick (SMAW) Welding Rod product family. Use the variant selector or browse individual child listings to find your specific size and packaging configuration.