MX-A70C6LF04544 - Kobelco MX-A70C6LF 0.045 Metal-Cored Low Fume Wire - 44lb Spool

Kobelco MX-A70C6LF: High-Performance Low Fume Metal-Cored Wire

The Kobelco MX-A70C6LF is a premium metal-cored welding wire designed to address one of the most critical concerns in modern industrial welding: fume generation. Engineered by Kobe Steel, this 0.045-inch diameter wire (supplied in a 44lb spool) is formulated to significantly reduce the amount of welding fume produced during the arc welding process compared to conventional metal-cored wires. It meets the AWS A5.18 E70C-6M classification, making it a robust choice for mild steel and 490MPa grade high-tensile steel applications.

Technically, the MX-A70C6LF excels in high-current welding regimes where metal-cored wires are typically utilized for their deposition benefits. It offers a stable arc with a spray-type transfer when used with Argon-rich mixed gases (typically 75% to 95% Argon, balance CO2). This stability results in extremely low spatter levels, ensuring high material yield and reducing post-weld cleanup operations. The wire is particularly effective in flat and horizontal fillet welds, providing deep penetration and excellent fusion characteristics essential for structural integrity.

From a metallurgical perspective, the wire composition is balanced to provide reliable mechanical properties, including good impact toughness at lower temperatures. The "LF" designation highlights its specialized chemical composition that suppresses the formation of fume sources at the arc, thereby lowering the total fume emission rate (FER). This makes it an ideal candidate for enclosed workshops, automotive manufacturing lines, and heavy machinery fabrication where air quality management is a priority. The 44lb spool size is standard for industrial wire feeders, ensuring compatibility with most MIG/MAG welding systems.

In automated and robotic applications, the consistent feedability of Kobelco wires ensures uninterrupted production. The copper coating and precise winding of the spool minimize friction in the liner and contact tip wear, further enhancing process reliability. For fabrication shops looking to optimize both productivity and environmental safety standards, the MX-A70C6LF offers a superior solution without compromising on weld quality or mechanical performance.