S247112-029 - Hobart FabCO Excel-Arc 71 .045 Flux-Core Wire 33lb Spool

Technical Overview of Hobart FabCO Excel-Arc 71

The Hobart FabCO® Excel-Arc™ 71 is a premium gas-shielded flux-cored wire designed for the rigorous demands of industrial fabrication. Engineered as an all-position wire, it meets AWS classifications E71T-1C/M H8 and E71T-9C/M H8, indicating its suitability for both single and multi-pass applications on mild and low-alloy steels. This wire is formulated to operate effectively with either 100% CO2 or a mixture of 75% Argon and 25% CO2, providing flexibility in shop environments where gas availability or specific arc characteristics are prioritized.

One of the defining technical characteristics of the Excel-Arc 71 is its fast-freezing slag system. This feature significantly enhances puddle control, particularly when welding out-of-position (vertical-up or overhead), allowing for flatter bead profiles and reduced operator fatigue. The formulation also prioritizes a low fume generation rate (MHFMP campaign compliant), which contributes to a cleaner working environment and improved visibility of the weld pool during operation. The wire exhibits excellent mechanical properties, including high impact toughness, making it a reliable choice for critical structural applications where ductility and resistance to cracking are paramount.

The "H8" designation confirms that this consumable produces weld metal with less than 8ml of diffusible hydrogen per 100g, reducing the susceptibility to hydrogen-induced cracking (cold cracking) in thicker sections or restrained joints. With a diameter of 0.045 inches (1.2 mm) and packaged in a standard 33 lb (15 kg) spool, this product integrates seamlessly into standard industrial wire feeders. It is optimized for DCEP (Direct Current Electrode Positive) polarity, delivering a stable arc with minimal spatter, which translates to higher deposition efficiency and lower post-weld cleaning costs.