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61883200 - Bonarc E7018 Low Hydrogen Stick Electrode 3.2mm

Packaging: 4.5kg tube
$10.71/kg $30.11/4.5kg tube only $6.69/kgSave 38%

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OVERVIEW

Premium Bonarc 7018 Low Hydrogen Electrodes

The Bonarc 7018 3.2mm Stick Electrode is a high-performance consumable designed for the Shielded Metal Arc Welding (SMAW) process. Engineered for professional industrial applications, this electrode features a low hydrogen, iron powder coating that delivers exceptional weld quality on mild and low-alloy steels. It is the go-to choice for fabricators requiring X-ray quality welds with superior mechanical properties, particularly in structural applications where joint integrity is critical.

One of the standout features of the Bonarc 7018 is its excellent operator appeal. The electrode strikes and re-strikes easily, maintaining a stable arc that is easy to control in all positions. The addition of iron powder to the coating not only improves the deposition rate but also assists in producing a smooth, uniform bead profile with minimal spatter. Slag removal is often self-releasing or requires minimal chipping, which significantly improves productivity during multi-pass welding operations.

This electrode is classified as E7018 by the American Welding Society (AWS), indicating a minimum tensile strength of 70,000 psi. It is specifically formulated to resist moisture absorption, although proper storage in a rod oven is recommended to maintain its low hydrogen status. The Bonarc 7018 is versatile enough to be used with both DC+ (Reverse Polarity) and AC power sources, making it compatible with a wide range of welding machines found in workshops and field sites.

Industrial Reliability

For industries ranging from construction to shipbuilding, the Bonarc 7018 provides the reliability needed for critical joints. Its ability to produce crack-resistant welds on difficult-to-weld steels makes it an essential inventory item for maintenance and repair operations (MRO). Whether you are welding heavy I-beams, pressure vessels, or machinery frames, this 3.2mm electrode offers the penetration and strength required for heavy-duty tasks.

Additional Information
Brand:Bonarc
Diameter:3.2mm (1/8")
AWS Spec:E7018
Amp Range:110-150 A
Polarity:AC/DCEP
Position:All
Rod Type:Stick Electrode
Coating Type:Low Hydrogen Iron Powder
Tensile Strength:70,000 PSI
Welding Current:DCEP, AC
Material Application:Mild Steel, Carbon Steel, Low Alloy Steel
Packaging Description:4.5kg tube

INCLUDED

  • Bonarc 7018 Stick Electrodes (3.2mm Diameter)
  • Product Packaging

APPLICATIONS

  • Structural steel fabrication (buildings, bridges)
  • Pressure vessel and boiler construction
  • Heavy machinery and equipment repair
  • Shipbuilding and offshore structures
  • Pipe welding (fill and cap passes)
  • General maintenance and fabrication of carbon steels

FAQ

For a 3.2mm (1/8") E7018 electrode, the recommended amperage range is typically between 110 and 150 amps. The exact setting depends on the material thickness and welding position.

Yes, E7018 electrodes are low-hydrogen rods. To prevent moisture absorption which can cause weld cracking, they should be stored in a holding oven at 250°F-300°F after opening the package.

Yes, Bonarc 7018 electrodes are designed to operate on both AC (Alternating Current) and DCEP (Direct Current Electrode Positive). DCEP is generally preferred for smoother arc characteristics.

The Bonarc 7018 is an all-position electrode. It can be used in Flat, Horizontal, Vertical-Up, and Overhead positions. It is not recommended for Vertical-Down welding.

These electrodes are designed for welding mild steel, carbon steel, and high-tensile low-alloy steels. They are excellent for structural steel applications.

The '70' indicates the minimum tensile strength of the weld metal, which is 70,000 psi. This makes it suitable for structural applications requiring high strength.

While 7018 has some tolerance, it is a low-hydrogen rod intended for high-quality welds. It is best practice to clean the base metal of heavy rust, oil, and paint before welding to prevent porosity.