KP2745-040 - Lincoln Electric KP2745-040 Magnum PRO Copper Plus Contact Tip .040 (10-Pack)

High-Performance Contact Tips for Industrial Welding

The Lincoln Electric KP2745-040 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 advancement in consumable technology. The core of its performance lies in the Copper Plus innovation, which utilizes a larger physical diameter and a proprietary copper alloy composition. This design increases the thermal mass of the tip, allowing for superior heat dissipation. By drawing heat away from the wire interface more efficiently than standard tips, the KP2745-040 maintains a cooler operating temperature even during high-amperage welding cycles up to 550A.

Thermal management is critical in maintaining arc stability and preventing premature failure. When a contact tip overheats, the material softens, leading to keyholing (wear of the bore) and erratic electrical transfer. The Copper Plus design mitigates these issues, ensuring that the .040-inch (1.0 mm) wire maintains consistent contact for a stable arc. This results in fewer tip changes, reduced downtime, and lower overall operational costs for fabrication shops and manufacturing facilities.

Anti-Seize Thread Technology

One of the most common frustrations in MIG welding is the seizing of contact tips within the diffuser, often caused by the immense heat and spatter accumulation. Lincoln Electric addresses this with their patented Anti-Seize threading. The threads on the KP2745-040 feature a flattened profile that increases the contact surface area between the tip and the diffuser. This design not only improves thermal conductivity but also prevents the threads from melting or fusing together. Operators can perform tip changes quickly and easily without the need for excessive force or tools that might damage the gun assembly.

Sold in packages of 10, these contact tips are an essential stock item for any operation utilizing Magnum PRO equipment. Whether used in semi-automatic hand welding or automated robotic cells, the KP2745-040 delivers the reliability and durability required for precision metal fabrication.