KP2745-564-B100 - Lincoln Magnum PRO Copper Plus Contact Tip, 550A, 5/64 in, 100-Pack

Industrial Grade Reliability with Lincoln Electric Magnum PRO Consumables

The Lincoln Electric KP2745-564-B100 Copper Plus Contact Tip is a premium consumable designed to meet the rigorous demands of heavy industrial welding. Engineered specifically for the Magnum PRO series of MIG guns, this contact tip represents a significant leap forward in consumable longevity and performance. In high-amperage applications, heat is the primary enemy of contact tip life. As temperatures rise, copper softens, leading to keyholing, erratic arc transfer, and eventual failure. Lincoln Electric addresses this fundamental challenge with their proprietary Copper Plus technology.

Copper Plus Technology distinguishes these tips from standard market alternatives by utilizing a larger outer diameter. This design choice is not merely aesthetic; it significantly increases the total copper mass of the tip. The additional mass acts as a superior heat sink, drawing thermal energy away from the wire bore and dispersing it more effectively into the surrounding air and gas stream. By maintaining a lower operating temperature, the tip retains its hardness and structural integrity for longer periods, even when welding at currents up to 550 amps. This thermal management is critical for maintaining consistent electrical conductivity and ensuring a stable arc throughout long weld cycles.

In addition to thermal management, the KP2745-564 features Lincoln's innovative Anti-Seize Threading. In many welding environments, the intense heat reflected from the arc can cause standard contact tips to expand and fuse to the gas diffuser, making replacement difficult or resulting in damage to the gun's front-end parts. The Anti-Seize threads on this Magnum PRO tip feature a flattened profile that reduces the contact surface area within the threads while maintaining a secure mechanical connection. This design prevents the tip from seizing in the diffuser, ensuring that when a changeover is finally necessary, it can be performed quickly and without tools, minimizing production downtime.

This specific SKU (KP2745-564-B100) is supplied in a bulk pack of 100 units, tailored for high-volume fabrication shops, shipyards, and manufacturing facilities where inventory management and cost-efficiency are paramount. Designed for 5/64 inch (2.0 mm) wire, it is ideal for heavy-plate welding applications requiring substantial deposition rates.