71028B - Hobart Megafil 710M 0.052 Metal-Cored Wire 660lb Drum

High-Efficiency Metal-Cored Wire for Automation

The Hobart Megafil 710M is a premium metal-cored welding wire designed to maximize productivity in high-volume manufacturing and heavy fabrication environments. Supplied in a substantial 660 lb drum, this product (SKU: 71028B) is engineered to minimize changeover downtime, making it an ideal choice for robotic cells and hard automation setups where continuous arc time is critical. The 0.052-inch diameter offers a balance of high deposition rates and controllable heat input, suitable for welding medium-to-heavy thickness mild steel plates.

Classified as E70C-6M H4 under AWS A5.18 standards, the Megafil 710M features a complex metal powder core encased in a steel sheath. This construction allows for higher current densities compared to solid wires, resulting in broader penetration profiles and faster travel speeds. The wire is formulated to operate with Argon/CO2 shielding gas mixtures (typically 75-95% Argon), which promotes a stable, spray-transfer like arc with extremely low spatter levels. The "H4" designation indicates very low diffusible hydrogen content (less than 4ml per 100g of weld metal), significantly reducing the risk of hydrogen-induced cracking in critical structural applications.

From a metallurgical perspective, the Megafil 710M provides excellent deoxidizing properties, allowing it to handle base metals with light-to-moderate mill scale or rust without compromising weld integrity. The resulting weld bead is smooth, flat, and virtually free of slag, eliminating the need for inter-pass chipping or grinding in multi-pass operations. This efficiency gain is a primary driver for shops transitioning from flux-cored or solid wire processes to metal-cored solutions.

The bulk drum packaging requires appropriate payoff equipment (conduits and cones) to ensure tangle-free feeding over long distances. By utilizing the 660 lb drum, facilities can significantly reduce the frequency of spool changes compared to standard 33 lb or 44 lb packages, directly contributing to improved Overall Equipment Effectiveness (OEE). This wire is particularly well-suited for industries such as railcar manufacturing, heavy equipment assembly, and structural steel fabrication.