S307212-033 - Hobart QuantumArc D2 .045" ER80S-D2/ER90S-G MIG Wire 33lb Steel Reel

High-Strength Low Alloy MIG Wire for Industrial Fabrication

The Hobart QuantumArc™ D2 is a premium .045-inch solid MIG welding wire designed for applications requiring superior strength and weld quality. Classified under AWS specifications as both ER90S-G and ER80S-D2, this low alloy steel wire is engineered to deliver higher tensile and yield strength compared to standard ER70S-X class wires. It is an ideal choice for fabricating carbon and low alloy steels where structural integrity and durability are paramount. The wire is supplied on a durable 33 lb steel reel, fitting standard 12-inch industrial wire feeders, ensuring long run times and reduced changeover frequency in high-production environments.

One of the defining characteristics of the QuantumArc D2 is its sophisticated chemical formulation. It is high in deoxidizers, which actively work to scavenge impurities from the weld pool, resulting in deposits that are virtually free of porosity and slag. This makes it particularly suitable for critical applications such as high-temperature service piping and heavy construction equipment where X-ray quality welds are a mandatory requirement. The low silicon content further refines the weld metal properties, while the copper coating ensures excellent electrical conductivity and smooth feeding through the MIG gun liner and contact tip, reducing arc instability and downtime.

This wire exhibits excellent wetting characteristics, allowing the molten weld pool to tie in smoothly at the toes of the weld, thereby reducing stress concentrations and the need for extensive post-weld grinding. It is versatile in its shielding gas requirements, operating effectively with either a 75% Argon / 25% CO2 blend or 100% CO2, giving fabricators flexibility based on their available gas supply and desired arc characteristics. Whether used for single-pass fillets or multi-pass heavy plate welding, the Hobart QuantumArc D2 delivers consistent, high-performance results.

Key Industrial Applications:

• High-temperature service piping systems
• Heavy construction machinery and earthmoving equipment
• Structural steel trailers and cranes
• Automotive and railcar manufacturing
• Root passes on open butt weld joints