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Hobart Fabco 911B3 .045" Chrome-Moly Flux-Cored Wire, 33 lb Spool

$17.82/lb $367.62/33lb spool only $11.14/lbSave 37%

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OVERVIEW

Reliable Chrome-Moly Welding with Hobart Fabco 911B3

When your project involves welding 2-1/4 Chrome 1 Moly steel, you need a consumable that doesn't just meet the spec but also makes the job easier. The Hobart Fabco 911B3 .045" flux-cored wire is built exactly for that purpose. It is the go-to choice for welders working on high-pressure steam piping, heat exchangers, and heavy-wall pressure vessels found in power plants and refineries. This wire takes the headache out of welding exotic alloys by providing a smooth, stable arc and a puddle that goes exactly where you want it, even when you are welding out of position.

We know that welding vertical-up on heavy pipe can be a challenge with the wrong filler metal. The Fabco 911B3 features a quick-freezing slag that acts like a shelf, holding the molten metal in place and allowing you to stack beads with precision. This means less fighting with the puddle and more time laying down perfect welds. The slag releases easily—often curling up on its own—so you aren't wasting valuable time chipping and hammering between passes. Plus, the ability to use either straight CO2 or an Argon mix gives you the freedom to dial in the arc to your personal preference or shop setup.

This 33lb spool is designed for industrial wire feeders and provides enough material for substantial runs without constant changeovers. It is specifically formulated to match materials like P22 pipe, ensuring that the weld seam can handle the same extreme heat and stress as the pipe itself. Whether you are repairing heavy earthmoving equipment or fabricating critical components for a boiler system, the Hobart Fabco 911B3 delivers the professional performance and durability required for code-quality work. Trust Hobart's expertise in flux-cored technology to help you deliver defect-free welds on your toughest alloy jobs.

Additional Information
Brand:Hobart
Diameter:0.045 in
Packaging Description:33lb spool
Spool Size:33 lb Spool
Weld Process:Flux-Cored (FCAW)
Position:All Position
Polarity:DCEP
AWS Classification:E91T1-B3C, E91T1-B3M
Material Composition:Low Alloy Steel, 2.25% Chromium, 1% Molybdenum
Shielding Gas Requirement:100% CO2, 75% Argon / 25% CO2
Wire Type:Gas-Shielded Flux-Cored
Tensile Strength:90,000 - 100,000 psi (Typical)
Alloy Type:Chrome-Moly

INCLUDED

  • 1 x 33 lb Spool of Hobart Fabco 911B3 .045" Flux-Cored Wire

APPLICATIONS

  • Welding of ASTM A335 P22 and A213 T22 piping
  • Fabrication of ASTM A387 Grade 22 pressure vessel plates
  • Power generation steam piping and boiler components
  • Petrochemical refinery heat exchangers
  • Heavy equipment repair involving Cr-Mo steels
  • High-temperature service applications requiring creep resistance

FAQ

This wire is designed to operate with either 100% CO2 or a mixture of 75% Argon and 25% CO2. Using an Argon blend typically provides a smoother arc and slightly less spatter.

The Hobart Fabco 911B3 meets AWS A5.29 specifications with classifications E91T1-B3C (with 100% CO2) and E91T1-B3M (with 75% Ar/25% CO2).

Yes, Fabco 911B3 is an all-position wire. Its fast-freezing slag system makes it excellent for vertical-up and overhead welding applications.

It is specifically designed for welding low alloy steels containing 2.25% Chromium and 1% Molybdenum, such as ASTM A387 Grade 22 and A335 P22.

Yes, welding Cr-Mo steels typically requires preheat and interpass temperature control to prevent cracking, as dictated by the base material thickness and welding code.

This wire runs on Direct Current Electrode Positive (DCEP), also known as reverse polarity.

Yes, it is suitable for both single and multiple pass applications, providing versatility in procedure development.

Flux-cored wire should be stored in a dry, low-humidity environment. If opened, it is best kept in a warm, dry area or returned to moisture-resistant packaging to prevent moisture pickup.

CATALOGUE & SPEC SHEETS

Spec Sheet
Safety Data Sheet
Google Rating
4.9
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