S281412-029 - Hobart Fabcor 80N2 0.045 Metal Core Wire 33lb Spool

Technical Analysis: Hobart Fabcor 80N2 (AWS E80C-Ni2)

The Hobart Fabcor 80N2 is a gas-shielded metal-cored wire conforming to AWS A5.28/A5.28M specifications for the classification E80C-Ni2. This consumable is engineered for the welding of high-strength low-alloy (HSLA) steels requiring superior toughness at low temperatures. The wire features a 0.045" diameter and is packaged in a 33 lb spool, designed for DCEP (Direct Current Electrode Positive) polarity.

Metallurgical Properties and Performance

The defining characteristic of the Fabcor 80N2 is its ability to maintain high impact resistance in frigid environments. It typically provides Charpy V-Notch (CVN) impact values of 20 ft-lbs (27 J) at -40°F (-40°C) or better, depending on the shielding gas used. The weld deposit contains approximately 1% Nickel, which acts as a grain refiner and solid-solution strengthener, significantly improving the notch toughness of the ferritic matrix without compromising weldability. This makes it an excellent candidate for ASTM A572, A516, and A514 steels often utilized in offshore platforms and shipbuilding.

Operational Characteristics

As a metal-cored wire, Fabcor 80N2 offers distinct advantages over solid wires (GMAW) and flux-cored wires (FCAW). It combines the high deposition efficiency of solid wire with the wetting action and bead profile control of flux-cored wire, but with significantly less slag generation. The wire is designed to operate with high-argon shielding gas blends:

• 85-90% Argon / Balance CO2: Provides a balance of arc stability and penetration profile.
• 95-99% Argon / Balance Oxygen: Enhances spray transfer stability and wetting at the toes of the weld, reducing stress concentrations.

The tubular design allows for higher current densities at equivalent amperage compared to solid wires, resulting in a broader, more penetration-consistent arc cone. This is particularly beneficial for automated or robotic welding cells where consistency is paramount. Furthermore, the Fabcor 80N2 is formulated to produce low diffusible hydrogen levels (typically H4), mitigating the risk of hydrogen-induced cracking (HIC) in thick-section weldments.