KP2745-045-B100 - Lincoln Electric KP2745-045-B100 Copper Plus Contact Tip 550A .045" (100-Pack)

High-Performance Consumables for Industrial Fabrication

The Lincoln Electric KP2745-045-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, these contact tips represent a significant advancement in consumable technology. This bulk package contains 100 individual tips, making it an essential stock item for large-scale manufacturing facilities, shipyards, and fabrication shops where downtime must be minimized and arc consistency is paramount. The tip is sized for .045-inch (1.2 mm) welding wire and is rated for high-amperage applications up to 550A, ensuring it can handle the heat of aggressive duty cycles without failure.

Copper Plus Technology

At the core of this product's performance is Lincoln Electric's proprietary Copper Plus technology. These contact tips feature a larger outer diameter compared to standard industry tips. This increased mass allows for a greater volume of copper, which significantly improves thermal conductivity. By dispersing heat more efficiently, the tip remains cooler during operation. A cooler tip maintains better electrical conductivity and structural integrity, reducing the likelihood of burn-back and extending the overall lifespan of the consumable. For industrial operators, this translates to fewer interruptions for tip changes and more arc-on time.

Anti-Seize Thread Design

One of the most common issues in high-amperage MIG welding is the fusing of the contact tip to the diffuser due to extreme thermal cycling. The KP2745-045-B100 addresses this with Lincoln's Anti-Seize threading. The thread profile is engineered to flatten out slightly as the tip heats up and expands, maintaining a secure electrical connection while preventing the threads from locking or welding to the diffuser. This feature ensures that when it is finally time to replace the tip, it can be removed easily without damaging the gun's front-end parts, saving maintenance costs and frustration.

Optimized for Magnum PRO

These standard-geometry tips are designed to integrate seamlessly with the Magnum PRO expendable system. The precise machining ensures accurate wire alignment and consistent arc starting characteristics. By utilizing genuine Lincoln Electric consumables, operators ensure that their equipment performs to factory specifications, maintaining the high-quality weld bead appearance and penetration required for code-level work.