S307212-028 - Hobart Quantum Arc D2 ER80S-D2 MIG Wire .045 60lb Spool

High-Strength Low-Alloy MIG Wire for Industrial Fabrication

The Hobart Quantum Arc D2 is a premium copper-coated solid wire designed for the rigorous demands of industrial welding. Classified as ER80S-D2, this wire is engineered with specific additions of manganese and molybdenum (Mn-Mo), which significantly enhance the mechanical properties of the weld deposit. It is specifically developed for joining high-strength, low-alloy (HSLA) steels where standard mild steel wires may not provide sufficient tensile strength or impact toughness. This makes it an essential consumable for MRO operations dealing with heavy machinery, structural components, and pressure vessels.

One of the standout characteristics of the Quantum Arc D2 is its ability to produce X-ray quality welds. The chemical composition is tightly controlled to ensure the weld metal is virtually free of porosity and slag inclusions, provided proper welding procedures are followed. This level of integrity is critical for applications involving pressure piping and safety-critical structural assemblies. The copper coating on the wire serves a dual purpose: it protects the wire from oxidation during storage and improves electrical contact at the contact tip, ensuring stable arc initiation and consistent current transfer.

This wire is versatile in its shielding gas requirements, operating effectively with both 100% Carbon Dioxide (CO2) and high-percentage Argon blends (typically 75% Argon / 25% CO2). While Argon blends generally offer a smoother arc and less spatter, the ability to run on straight CO2 provides cost savings and deeper penetration profiles beneficial in heavy-section welding. The 60lb fiber spool packaging is designed for high-volume production environments, reducing downtime associated with frequent spool changes.

Industrial Applications:

• Heavy construction equipment manufacturing and repair
• High-pressure piping systems
• Structural steel fabrication requiring 80ksi tensile strength
• Railcar chassis and frames
• Trailer manufacturing