KP2745-045 - Lincoln Magnum PRO Copper Plus Contact Tips .045 550A (10-Pack)

High-Performance Consumables for Industrial Welding

The Lincoln Electric KP2745-045 Contact Tip is a premium consumable engineered for the Magnum® PRO series of MIG welding guns. Designed to meet the rigorous demands of industrial fabrication, this contact tip integrates advanced materials science with practical engineering to deliver superior arc stability and longevity. Specifically sized for .045-inch (1.2 mm) wire, this tip is rated for 550A applications, making it an ideal choice for high-deposition welding environments where heat management is critical to maintaining productivity.

Copper Plus® Technology

At the core of this product's performance is Lincoln's proprietary Copper Plus® technology. Unlike standard contact tips, Copper Plus® tips feature a larger outer diameter. This design increase allows for a greater volume of copper content in each tip. The additional mass acts as a superior heat sink, effectively dispersing the intense thermal energy generated during the welding arc. By keeping the tip cooler for longer periods, the structural integrity of the copper is maintained, preventing the softening and deformation that often leads to keyholing and erratic arc transfer. This thermal efficiency directly translates to fewer tip changes and more arc-on time.

Anti-Seize™ Threading Innovation

One of the most common frustrations in MIG welding maintenance is the seizing of contact tips within the gas diffuser, often caused by thermal expansion and micro-arcing. The KP2745-045 addresses this with Anti-Seize™ Threading. The threads are precision-engineered with a unique profile that prevents the tip from melting or fusing to the diffuser, even after prolonged exposure to high heat. This feature ensures that when it is finally time to replace the consumable, the old tip can be removed easily without damaging the diffuser or requiring excessive force, thereby preserving the lifespan of the entire front-end assembly.

Magnum® PRO Compatibility

These contact tips are a standard component of the Magnum® PRO expendables platform. They are designed to work seamlessly with Lincoln Electric's industry-leading MIG guns, ensuring a tight tolerance fit that promotes consistent electrical conductivity. The 10-pack packaging ensures that operators have a ready supply of high-quality replacements on hand, minimizing interruptions on the production floor. Whether used in heavy equipment manufacturing, structural steel, or general fabrication, the KP2745-045 delivers the reliability professional welders expect from Lincoln Electric.