S305406-033 - Hobart HB-28 .030" ER70S-6 Solid MIG Welding Wire - 33 lb Spool

Premium ER70S-6 Solid Wire for Industrial Fabrication

The Hobart HB-28 .030" MIG Welding Wire is a high-performance, copper-coated mild steel solid wire engineered to meet the rigorous demands of industrial manufacturing and structural fabrication. Classified as AWS A5.18 ER70S-6, this wire is formulated with elevated levels of manganese and silicon deoxidizers. These chemical additions are critical for scavenging impurities from the weld puddle, making HB-28 an excellent choice for applications where base metal surface preparation cannot be perfect. It effectively handles light to moderate rust, mill scale, and oil, producing sound, porosity-free welds with high tensile strength.

Operational efficiency is a key characteristic of the HB-28 series. The precision copper coating serves a dual purpose: it enhances electrical conductivity for efficient energy transfer at the contact tip, and it provides a low-friction surface that ensures smooth, consistent feeding through long MIG gun liners. This reduces the risk of bird-nesting and micro-arcing within the tip, thereby extending consumable life and reducing downtime. The wire produces an exceptionally stable arc with minimal spatter, which translates to significantly reduced post-weld cleanup and grinding operations, optimizing overall workflow productivity.

This 33 lb spool is designed for standard industrial wire feeders and is suitable for both single and multiple pass applications. The HB-28 exhibits excellent wetting action, allowing the weld metal to flow smoothly into the toes of the weld for a flat, uniform bead profile. It is compatible with a variety of shielding gases, including 100% Carbon Dioxide (CO2) for deep penetration and economy, as well as Argon/CO2 mixtures (typically 75/25) for reduced spatter and improved arc control in out-of-position welding. Whether utilized in the manufacturing of pressure vessels, heavy equipment, or railcars, the Hobart HB-28 delivers consistent, code-quality results.