11401213 - Tweco 11AH-3/64 Aluminum Contact Tip (Pack of 25)

Smooth Aluminum Feeding with Tweco 11AH Tips

Welding aluminum presents a unique set of challenges compared to steel, primarily due to the softness of the wire and its high rate of thermal expansion. If you have ever experienced the frustration of aluminum wire seizing inside your contact tip—commonly known as burnback—you know how quickly it can ruin a production run. The Tweco 11AH-3/64 Contact Tip is the solution. Designed specifically for 3/64" aluminum wire, these tips feature a bore geometry that allows the wire to expand as it heats up without binding, ensuring a smooth and consistent feed throughout your weld.

These tips are built to the rugged standards you expect from Tweco. They fit directly into your existing Tweco No. 1 through No. 4 MIG guns, meaning you don't need special adapters or proprietary torches to get better performance with aluminum. Simply swap out your standard steel tip for an 11AH series tip when switching spools. The high-grade copper construction ensures the tip withstands the heat of high-amperage spray transfer welding often used with aluminum, maintaining its shape and conductivity over time.

This pack of 25 ensures you have plenty of consumables on hand. In aluminum welding, contact tips are often considered the first line of defense against erratic arcs. By keeping a fresh 11AH tip on your gun, you minimize micro-arcing inside the bore and ensure the current transfer happens exactly where it should—at the end of the tip. Whether you are repairing aluminum trailers, fabricating marine components, or working on automotive parts, these tips provide the reliability professional welders demand.