81915B - Hobart Megafil 819R .045 Seamless Flux-Cored Wire 35lb Spool

Premium Seamless Flux-Cored Wire for Critical Applications

The Hobart Megafil 819R is a high-performance, seamless rutile flux-cored wire designed to meet the rigorous demands of the offshore, pipeline, and pressure vessel industries. Engineered with a hermetically sealed copper-coated surface, this wire offers exceptional resistance to moisture pickup, ensuring extremely low diffusible hydrogen levels (typically below 4ml/100g). This feature is critical for preventing hydrogen-induced cracking in high-strength steels and thick sections, making it a preferred choice for applications where structural integrity is paramount.

One of the standout characteristics of the Megafil 819R is its superior mechanical properties, particularly its impact toughness at low temperatures. It is formulated to maintain ductility and strength even after extended stress-relief cycles, addressing the challenges often faced in heavy fabrication and equipment modification. The wire's chemistry is optimized to provide consistent results whether using mixed gas (Argon/CO2) or 100% CO2, offering flexibility in shop and field environments. The seamless manufacturing process also ensures excellent feedability and current transfer, reducing contact tip wear and minimizing downtime associated with feeding issues.

This wire is classified for all-position welding, allowing operators to execute complex welds in vertical and overhead positions with ease. The slag system is designed for easy removal, and the bead profile is smooth and consistent, reducing the need for extensive post-weld grinding. For industrial sectors requiring robust, crack-resistant welds in harsh environments—such as offshore platforms and heavy earth-moving equipment—the Hobart Megafil 819R delivers reliability and performance that meets stringent AWS and international standards.

Key Technical Benefits:

• Moisture Resistance: Seamless design prevents moisture absorption, eliminating the need for special storage conditions typically required for folded wires.
• Low Hydrogen: Guarantees H4 hydrogen status, significantly lowering the risk of cold cracking.
• Stress Relief: Maintains toughness and tensile strength after post-weld heat treatment (PWHT).