Skip to Main Content
Canadian
Canadian owned and operated

ED033179 - Lincoln Excalibur 7018-1 MR 2.5mm Low Hydrogen Stick Electrode

Packaging: 8 lb per can
$14.66/lb $73.28/8 lb per can only $9.16/lbSave 38%

Usually ships within 3-5 business days

OVERVIEW

Experience Superior Arc Control with Excalibur 7018-1 MR

For professional welders, the "feel" of the rod is everything. The Lincoln Excalibur 7018-1 MR (2.5mm) is legendary in the industry for a reason: it runs smoother than almost any other 7018 on the market. If you are tired of fighting with rods that fingernail, stick, or have hard-to-remove slag, switching to Excalibur will feel like an upgrade to your entire setup. This electrode is designed to burn off squarely, giving you exceptional directional control and a focused arc that puts the metal exactly where you want it.

The "MR" stands for Moisture Resistant, but for the welder, it translates to a rod that starts easy and restarts even easier. The coating is flexible enough to resist cracking when you bend the rod for those tight, awkward positions, yet durable enough to maintain a stable arc column. The slag system is formulated to lift easily—often peeling up by itself as it cools—leaving behind a clean, smooth bead profile that requires minimal post-weld grinding or brushing. This is crucial when you are welding out of position, such as vertical-up or overhead, where slag entrapment can be a nightmare with lesser rods.

This 2.5mm (approx. 3/32") version is perfect for root passes in pipe welding or for fabricating thinner walled structural tubing where heat input control is critical. It offers excellent impact toughness at low temperatures, making it a reliable choice for field work in harsh climates. Whether you are welding on a bridge, a pressure vessel, or a heavy equipment repair, the Excalibur 7018-1 MR gives you the confidence that your welds will pass X-ray and ultrasonic testing every time.

Welder-Centric Features

  • Easy Slag Release: Spend less time chipping and more time welding.
  • Stable Arc: Smooth, quiet arc with minimal spatter keeps your workpiece clean.
  • All-Position: Excellent puddle control in Vertical-Up and Overhead positions.
  • Restart Capability: Hot start properties make restriking the arc simple and reliable.
Additional Information
Brand:Lincoln Electric
Diameter:2.5mm (3/32")
AWS Spec:E7018-1
Position:All
Polarity:AC/DCEP
Rod Type:Stick Electrode
Coating Type:Low Hydrogen, Basic
AWS Classification:E7018-1 H4R
Welding Position:All Position
Current Type:DCEP, AC
Tensile Strength:70,000 psi minimum
Applications:Structural Fabrication, Pressure Vessels, Piping
Packaging Description:8 lb per can
Amp Range:100-160 A

INCLUDED

  • Lincoln Excalibur 7018-1 MR Stick Electrodes (2.5mm x 12")
  • Moisture Resistant Packaging

APPLICATIONS

  • Structural Steel Fabrication
  • Pressure Vessel and Tank Manufacturing
  • Power Generation Plant Construction
  • Petrochemical Piping (API 751 compliant)
  • Heavy Equipment Repair
  • Bridge and Infrastructure Construction
  • General Fabrication requiring Low Hydrogen welds

FAQ

MR stands for 'Moisture Resistant'. This designation indicates that the electrode's coating is designed to resist moisture absorption from the air, which helps prevent hydrogen-induced cracking in the weld metal.

The Lincoln Excalibur 7018-1 MR is designed to operate on DCEP (Direct Current Electrode Positive) or AC (Alternating Current). DCEP is generally preferred for smoother arc performance.

Yes, the Excalibur 7018-1 MR is specifically engineered to produce radiographic (x-ray) quality welds, making it ideal for critical code work.

This product is classified as AWS E7018-1 H4R. The '-1' indicates improved impact properties at lower temperatures, and 'H4R' indicates very low diffusible hydrogen levels.

Absolutely. The 2.5mm diameter is excellent for root and hot passes on pipe, and the rod is widely used in high-pressure piping applications.

Yes, it is specifically formulated to meet the chemical composition requirements of API 751 for petrochemical applications.

The 2.5mm diameter is approximately equivalent to 3/32 inch.

While the MR coating resists moisture, for critical code work (like AWS D1.1), low hydrogen rods should be stored in a holding oven after opening the hermetically sealed container to maintain their low hydrogen status.

CATALOGUE & SPEC SHEETS

Safety Data Sheet