The Lincoln Easyarc 7018 MR Stick (SMAW) Welding Rod is a low-hydrogen, moisture-resistant iron-powder SMAW electrode classified to AWS A5.1/A5.1M E7018-1 H4R. Engineered for welding mild steel, low-alloy steels, and steels of poor weldability, the Easyarc 7018 MR delivers a soft and quiet arc with very low spatter, excellent operator appeal, and H4 diffusible hydrogen levels — ideal for structural, pressure vessel, and general fabrication work where moisture resistance and weld quality are paramount.
- Classification: E7018
- Alloy class: Mild Steel
- Polarity: DC+ or AC
- Positions: All positions except vertical-down
- Available diameters: 2.5mm, 3.2mm, 4.0mm, 5.0mm
- Process: SMAW
- Classification: E7018
- AWS Classification: AWS A5.1/A5.1M E7018-1 H4R
- ASME: ASME SFA-A5.1 E7018-1 H4R
- Coating: Low-hydrogen iron-powder basic moisture-resistant
- Polarity: DC+ (DCEP) preferred; AC acceptable
- Positions: All positions except vertical-down
- Diffusible hydrogen: ≤4 mL/100g (H4R designation)
Structural steel fabrication, shipbuilding, pressure vessel and boiler manufacturing, machinery repair, and general-purpose mild steel welding. Ideal for field welding and environments with moisture exposure due to H4R moisture-resistant coating.
- AWS E7018-1 H4R — moisture-resistant low-hydrogen classification
- Soft, quiet arc with very low spatter for excellent operator appeal
- H4 diffusible hydrogen (≤4 mL/100g) reduces hydrogen-induced cracking risk
- Excellent for welding steels of poor weldability or with mill scale
- All-position capability (except vertical-down)
- Good puddle visibility and control for reliable out-of-position work
| Property | AWS Requirement | Typical |
|---|---|---|
| Tensile Strength | 490 MPa min | 515 MPa |
| Yield Strength | 400 MPa min | 410 MPa |
| Elongation | 22% min | 31.5% |
| CVN @ -45°C | 27 J min | 128 J |
| Diameter | Package |
|---|---|
| 2.5mm | 20 kg |
| 3.2mm | 20 kg |
| 4.0mm | 20 kg |
| 5.0mm | 20 kg |
This Combined Listing parent page aggregates all package sizes and diameters for the Lincoln Easyarc 7018 MR Stick (SMAW) Welding Rod product family. Use the variant selector or browse individual child listings to find your specific size and packaging configuration.