KP2745-18 - Lincoln Electric KP2745-18 Magnum PRO Copper Plus Contact Tip, 1/8 in, 550A (10-Pack)

High-Performance Consumables for Industrial Fabrication

The Lincoln Electric KP2745-18 is a premium contact tip engineered for the Magnum® PRO series of MIG welding guns. Designed to meet the rigorous demands of heavy industrial welding, this consumable leverages Lincoln's proprietary Copper Plus® technology. Unlike standard contact tips, Copper Plus® tips are manufactured with a larger outer diameter and increased copper mass. This design enhancement significantly improves thermal conductivity, allowing the tip to disperse heat more efficiently. By maintaining lower operating temperatures, the structural integrity of the tip is preserved for longer periods, reducing the frequency of consumable change-outs and minimizing production downtime.

This specific model is rated for 550 Amps and is precision-bored to accommodate 1/8-inch (3.2 mm) welding wire, making it suitable for high-deposition applications often found in structural steel fabrication, heavy equipment manufacturing, and shipbuilding. The tip features a standard relationship geometry, ensuring consistent electrical stick-out and arc characteristics.

A critical feature of the KP2745-18 is the Anti-Seize™ threading. In high-amperage environments, thermal expansion and micro-arcing can often cause standard tips to fuse to the gas diffuser, leading to difficult removal and potential damage to the gun assembly. The Anti-Seize™ threads are engineered with a flattened profile to prevent this fusion, ensuring that maintenance personnel can replace tips quickly and easily without the need for excessive force or specialized tools. This attention to mechanical detail translates to lower operational costs and improved workflow efficiency in the welding cell.

Supplied in a package of 10, these contact tips represent a strategic investment in consumable management. By utilizing genuine Lincoln Electric parts, operators ensure full compatibility with their Magnum PRO equipment, maintaining the validity of equipment warranties and ensuring optimal arc performance. The KP2745-18 combines metallurgical superiority with practical engineering to deliver a consumable that withstands the heat of the arc while maintaining precise wire delivery.