S307312-028 - Hobart Quantum Arc 3 .045 Metal-Cored Wire 60lb Spool

Technical Performance of Hobart Quantum Arc 3

Hobart Quantum Arc 3 is a Gas-Shielded Metal-Cored (GMAW-C) wire meeting AWS E70C-6M H4 classifications. This 0.045" wire is engineered for single- and multi-pass welding of carbon steels, offering a superior alternative to solid wires in applications requiring high deposition rates and deep penetration. The tubular design of the wire, filled with metallic powders, creates a broader arc cone that ensures excellent sidewall fusion and reduces the risk of lack-of-fusion defects, particularly in thicker plate sections.

Arc Characteristics and Metallurgy

The Quantum Arc 3 is designed to operate with DCEP polarity using mixed shielding gases (75-95% Argon, balance CO2). The high Argon content support promotes a spray transfer mode at lower current levels than solid wires, providing a stable, spatter-free arc. The resulting weld metal exhibits high tensile strength (typically exceeding 70 ksi) and good impact toughness, making it suitable for critical structural applications. The H4 designation indicates a low diffusible hydrogen content (less than 4ml/100g), which is essential for minimizing the risk of hydrogen-induced cracking in heavy weldments.

Applications and Efficiency

This wire is packaged in a 60lb fiber spool, designed to minimize changeover downtime in high-throughput environments. It is particularly well-suited for:

• Heavy Equipment Manufacturing: Excellent tolerance for mill scale and fast travel speeds.
• Structural Steel Fabrication: High deposition rates for large fillet welds.
• Robotic Automation: Consistent wire feeding and arc starting characteristics ensure reliability in automated cells.
• Railcar and Barge Construction: Deep penetration and superior mechanical properties.

By switching to Hobart Quantum Arc 3, welding operations can often realize significant cost savings through increased duty cycles and reduced labor costs associated with grinding and rework.