S125581-035 - Hobart Hoballoy 9018-B3 1/4" Stick Electrodes (50lb Can)

Name: Hobart Hoballoy 9018-B3 1/4" Stick Electrodes (50lb Can)
Brand: Welders Helper
SKU: S125581-035
Price: 329.00 CAD
Availability: InStock

Packaging: 50lb can

$10.52/lb $329.00/50lb can only $6.58/lbSave 37%

Save an additional $16.45 at checkout

Join the Nation of Welders Program

SKU: S125581-035 Categories: Steel Electrodes, Welding Wires and Electrodes

OVERVIEW

Superior Arc Control for Chrome-Moly Steels

When your project demands the highest quality welds on Chrome-Moly steel, the Hobart Hoballoy 9018-B3 delivers the performance professional welders trust. This 1/4-inch stick electrode is formulated to weld 2.25% Cr - 1% Mo steels commonly found in high-temperature service environments. Whether you are repairing steam piping or fabricating pressure vessels, the Hoballoy 9018-B3 offers a smooth, stable arc that makes controlling the puddle easier, even with the larger 1/4-inch diameter.

One of the standout features of this electrode is its slag release. Welders know that fighting stubborn slag can slow down production and hide defects. The Hoballoy 9018-B3 produces a slag that detaches easily, revealing a clean, smooth bead profile that requires minimal post-weld cleanup. The electrode operates well on both AC and DCEP currents, providing flexibility depending on your power source and specific welding procedure specification (WPS).

Reliability is key in high-stress applications. With its H4R moisture-resistant coating, this rod resists moisture pickup in humid environments, protecting the weld zone from hydrogen cracking. The 50lb can ensures you have ample supply for large jobs, keeping your downtime low and your productivity high. Choose Hobart Hoballoy 9018-B3 for consistent, high-strength results on your toughest alloy steel projects.

Additional Information
Brand:Hobart
AWS Spec:E9018-B3
Diameter:6.4mm (1/4")
Packaging Description:50lb can
Polarity:DCEP, AC
Position:Flat/Horizontal
Material Composition:Low Alloy Steel, 2.25% Chromium, 1% Molybdenum
Rod Type:Stick Electrode
Coating Type:Basic, Low Hydrogen
Tensile Strength:90,000 psi (min)
Welding Position:Flat, Horizontal
Moisture Resistance:H4R

INCLUDED

50 lb Can of Hobart Hoballoy 9018-B3 1/4" Stick Electrodes
Hermetically Sealed Packaging

APPLICATIONS

Power Generation Plants
Petrochemical Refineries
Pressure Vessels and Boilers
High-Temperature Steam Piping
P22 Alloy Steel Fabrication
Heavy Wall Pipe Welding

FAQ

E9018-B3 electrodes are specifically designed for welding 2.25% Chromium, 1% Molybdenum steels used in high-temperature and high-pressure applications like steam piping and pressure vessels.

Due to the large 1/4" diameter and the fluidity of the puddle, this size is typically restricted to Flat and Horizontal Fillet positions. Smaller diameters are required for out-of-position welding.

Yes, as a low-hydrogen electrode, once the hermetically sealed can is opened, the electrodes should be stored in a rod oven at 250°F-300°F to prevent moisture pickup.

Hobart Hoballoy 9018-B3 operates on DCEP (Direct Current Electrode Positive) or AC. For the 1/4" size, higher amperage ranges (typically 300-400A) are necessary.

Yes, welding 2.25% Cr - 1% Mo steels generally requires pre-heating and specific interpass temperatures to prevent cracking and ensure proper mechanical properties.

H4R indicates the electrode meets strict diffusible hydrogen limits (less than 4ml per 100g) and is moisture resistant (R), ensuring high-quality welds with low cracking risk.

While it can physically weld P11, E9018-B3 is over-alloyed for P11 (1.25% Cr). It is best matched for P22 (2.25% Cr) materials. Always check your engineering specifications.