S289115-053 - Hobart Fabco 91K2-C .052" Flux-Cored Wire, 33lb Spool

High-Performance Low-Alloy Flux-Cored Wire

The Hobart Fabco 91K2-C is a premium gas-shielded flux-cored wire designed to meet the rigorous demands of high-strength structural fabrication. Engineered with a specific formulation for use with 100% CO2 shielding gas, this wire offers an economical yet high-performance solution for industries requiring superior mechanical properties. The wire is classified under AWS E91T1-K2C, indicating its suitability for welding 90,000 psi tensile strength steels while maintaining excellent impact toughness at sub-zero temperatures. This makes it a critical consumable for sectors such as offshore drilling, shipbuilding, and heavy equipment manufacturing where weld integrity under stress and cold conditions is paramount.

One of the standout technical characteristics of the Fabco 91K2-C is its "K2" designation, which signifies its ability to deliver consistent Charpy V-Notch impact values at temperatures as low as -20°F (-29°C) or lower, depending on specific heat input and cooling rates. This low-temperature toughness is achieved through a carefully balanced alloy system that refines the grain structure of the weld metal. The .052" diameter provides a balance between deposition rate and puddle control, allowing for higher productivity in flat and horizontal positions while still being manageable for out-of-position work when parameters are adjusted correctly.

The "VPSP" in the product name refers to Hobart's Vacuum Packed Spool packaging. This advanced packaging technology is essential for low-hydrogen consumables. By sealing the wire in a vacuum, Hobart ensures that the product remains free from moisture absorption during storage and transport. This is critical for preventing hydrogen-induced cracking (HIC) in high-strength steels, ensuring that the wire delivers "H4" or better diffusible hydrogen levels right out of the box. For fabricators adhering to strict AWS D1.1 or D1.8 seismic codes, this moisture resistance provides peace of mind and reduces the need for pre-baking or special storage conditions once opened.

This wire is formulated for both single and multiple pass applications. Its slag system is designed to freeze quickly, supporting the molten puddle in vertical-up and overhead positions. The slag is also formulated for easy removal, reducing inter-pass cleaning time and the risk of slag inclusions. By optimizing the wire for 100% CO2, Hobart allows fabricators to utilize a lower-cost shielding gas without sacrificing arc stability or bead appearance, making the Fabco 91K2-C a cost-effective choice for large-scale projects.