The Hobart Fabco 911B3 is a premium gas-shielded flux-cored wire specifically engineered for the welding of low alloy steels containing approximately 2.25% Chromium and 1% Molybdenum. This wire is formulated to meet the rigorous demands of high-temperature service environments where creep resistance is critical. With a diameter of .045 inches and packaged in a 33-pound spool, it is an industrial staple for heavy fabrication in the power generation and petrochemical sectors. The wire conforms to AWS A5.29 specifications, carrying the classifications E91T1-B3C and E91T1-B3M, ensuring compliance with strict industry standards for pressure vessel and piping fabrication.
One of the standout technical characteristics of the Fabco 911B3 is its all-position capability. The flux system produces a fast-freezing slag that supports the weld puddle in vertical-up and overhead positions, making it highly effective for complex structural geometries and fixed-position pipe welding. It provides excellent bead contour and wetting action, which helps mitigate stress concentrations at the weld toes—a crucial factor in fatigue-sensitive applications. The wire is designed to operate with either 100% CO2 or a blend of 75% Argon and 25% CO2, offering flexibility in shielding gas selection based on shop availability and desired arc characteristics.
Metallurgically, the deposit produced by Fabco 911B3 matches the composition of ASTM A387 Grade 22 plates and A335 P22 pipes. This chemical compatibility ensures that the mechanical properties of the weld metal, including tensile strength and creep rupture strength, align with the base material requirements for elevated temperature service. The wire exhibits low spatter levels and easy slag detachability, which significantly improves welder productivity by reducing the time spent on post-weld cleaning and grinding. Whether used for single-pass or multi-pass applications, this consumable delivers consistent, high-quality radiographic results.
| Additional Information |
|---|
| Packaging Description:33lb spool |
| Diameter:0.045 |
| Spool Size:33lb spool |
| Weld Process:Flux Core |
| Position:All Position |
| Polarity:DC+ |
| AWS Classification:E91T1-B3C, E91T1-B3M |
| Material Composition:1% Molybdenum, 2.25% Chromium, Low Alloy Steel |
| 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 |
