S283712-029 - Hobart FabCO 803 .045 Flux-Cored Wire 33lb Spool

Technical Overview of Hobart FabCO 803

The Hobart FabCO 803 is a premium gas-shielded flux-cored wire designed specifically for the welding of high-strength, low-alloy steels, particularly those containing approximately 2% nickel. This consumable is engineered to meet the rigorous demands of industries where low-temperature Charpy V-Notch (CVN) toughness is a critical specification. With an AWS classification of E81T1-Ni2C and E81T1-Ni2M, FabCO 803 delivers consistent mechanical properties, ensuring structural integrity in environments subject to sub-zero temperatures.

One of the defining characteristics of this wire is its fast-freezing slag system. This formulation allows for excellent puddle control in all positions, including vertical-up and overhead, without sacrificing bead appearance or wetting action. The wire operates effectively with both 100% CO2 and 75-80% Argon/Balance CO2 shielding gas mixtures, providing flexibility depending on the available gas supply and desired arc characteristics. When used with mixed gas, operators can expect a smoother arc and slightly reduced spatter levels, although the wire performs admirably with straight CO2 as well.

Metallurgically, the 2% nickel content is the key driver for its application range. It is formulated to match the base metal properties of weathering steels and specific grades used in shipbuilding and offshore platform construction. The wire produces a deposit that resists cracking and maintains ductility under stress. For quality control and code compliance, FabCO 803 offers a reliable solution for critical structural welds requiring radiographic quality.

Specification Compliance

This wire meets the requirements for welding fine-grained steels and is often specified for projects involving ASTM A572, A588, and similar grades where enhanced toughness is required. The 33lb spool packaging is standard for industrial wire feeders, ensuring compatibility with most shop and field equipment setups.