The Lincoln Electric KP2745-116A Magnum® PRO Contact Tip is a premium consumable engineered specifically for the unique demands of high-amperage aluminum MIG welding. Unlike standard steel-focused tips, this 550A-rated component features a specialized internal geometry designed to accommodate the rapid thermal expansion of aluminum wire. By providing a slightly larger bore tolerance, it effectively prevents the wire seizing and burn-back issues that frequently plague aluminum fabrication, ensuring a smooth and consistent feeding experience even during extended arc-on times.
At the core of this contact tip is Lincoln Electric's proprietary Copper Plus® technology. This advanced alloy formulation offers significantly higher thermal conductivity and resistance to softening compared to standard copper tips. In high-heat industrial environments, this translates to a consumable lifespan that can be up to four times longer than conventional alternatives. The larger mass of the 550A design further aids in heat dissipation, keeping the tip cooler and maintaining electrical integrity throughout the weld. This durability is critical for automated or heavy-duty manual welding where frequent tip changes can severely impact productivity.
Integration with the Magnum® PRO platform ensures optimal electrical transfer. The tip utilizes a flattened thread profile that maximizes surface contact with the gas diffuser. This design not only improves conductivity—resulting in a more stable arc—but also enhances heat transfer away from the tip and into the gun neck. Additionally, the threads are engineered to resist fusing, allowing for easy removal and replacement even after being subjected to extreme thermal cycling. Supplied in a convenient 10-pack, the KP2745-116A is the professional's choice for reliable, high-quality aluminum welding.
| Additional Information |
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| Packaging Description:10 PER EA |
| Amps:550 |
| Wire Diameter:1.6 mm, 1/16 in |
| Tip Series:Copper Plus, Magnum PRO |
| Material:Copper Plus® Alloy |
| Process:MIG Welding |
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| Wire Diameter:1/16 in, 1.6 mm |
| Compatible Wire Material:Aluminum |
| Tip Series:Magnum PRO, Copper Plus |
| Material:Copper Plus Alloy |
| Process:MIG Welding |
| Brand:Lincoln |
| Amps:550 |
| Packaging Description:10 PER EA |
