KP2744-116AT - Lincoln Magnum PRO Copper Plus Contact Tip, 1/16 Aluminum, Tapered (10-Pack)

Technical Overview of the Lincoln Electric KP2744-116AT

The Lincoln Electric KP2744-116AT is a specialized contact tip within the Magnum® PRO expendables line, engineered specifically for high-amperage MIG welding applications involving aluminum wire. This component features a 1/16-inch (1.6 mm) wire diameter bore and utilizes a Tapered geometry to facilitate access into restricted joints while maintaining optimal shielding gas flow. A critical distinction of this SKU is the 'A' suffix, which denotes a bore tolerance specifically calibrated for aluminum filler metals. Aluminum expands more rapidly and significantly than steel when heated; standard tips often cause binding or seizing as the wire swells. The KP2744-116AT accommodates this expansion to ensure smooth feeding and consistent electrical contact.

The tip is manufactured using Lincoln's proprietary Copper Plus® technology. This design utilizes a larger physical diameter and a specialized copper alloy composition to increase thermal mass and conductivity. By effectively dispersing heat away from the arc zone, the tip remains cooler during extended duty cycles, which is vital for maintaining the structural integrity of the tip and preventing the wire from micro-arcing against the bore walls. Furthermore, the tip features Anti-Seize™ Threading. This thread design incorporates a flattened profile that increases the contact surface area between the tip and the diffuser, maximizing heat transfer and preventing the threads from fusing or seizing, a common failure mode in high-heat industrial environments.

Intended for industrial fabrication environments, this contact tip is compatible with Magnum® PRO MIG guns. The tapered design assists in directing gas flow turbulence-free to the weld pool, reducing porosity risks associated with aluminum welding. Each package contains 10 contact tips, ensuring sufficient inventory for production shifts.