KP2745-035AT - Lincoln KP2745-035AT Magnum PRO Aluminum Contact Tip .035 Tapered (10-Pack)

High-Performance Aluminum Welding Consumable

The Lincoln Electric KP2745-035AT is a premium contact tip engineered specifically for the demands of high-amperage aluminum MIG welding. Part of the Magnum® PRO Copper Plus® line, this consumable addresses the critical thermal management issues often encountered when welding softer aluminum alloys. The "AT" in the SKU designates this tip as an Aluminum Tapered model, indicating it possesses both the internal bore geometry required for smooth aluminum wire feeding and the external profile needed for precision work.

Central to the performance of the KP2745-035AT is Lincoln's proprietary Copper Plus® technology. These contact tips are manufactured with a larger outer diameter than standard industry tips, resulting in a significantly higher mass of copper. This additional mass acts as a powerful heat sink, effectively drawing thermal energy away from the wire-to-tip interface. In aluminum welding, where the wire is prone to softening, micro-arcing, and burn-back due to excess heat, this superior thermal dissipation is vital for maintaining electrical conductivity and arc stability. By keeping the tip cooler, the lifespan of the consumable is extended, and the frequency of production interruptions is reduced.

Mechanically, the KP2745-035AT features Anti-Seize™ threading. The threads are designed with a flattened profile to resist the deformation caused by repeated heating and cooling cycles. This innovation prevents the contact tip from fusing to the gas diffuser, a common issue in high-heat applications. The result is a consumable that can be removed by hand or with minimal force, eliminating the risk of stripped threads or damaged gun components. Rated for 550A, these tips are primarily intended for use with Magnum® PRO AL push-pull guns and pistol grip systems, ensuring reliable performance in heavy fabrication environments such as trailer manufacturing and marine construction.