42.0001.4751.10 - Fronius 1.2mm Aluminum Contact Tip M8x1.5 for MTG 320i (10-Pack)

Precision Engineering for Aluminum Welding

The Fronius Aluminum Contact Tip (SKU: 42,0001,4751,10) is a critical consumable designed specifically for the rigorous demands of aluminum MIG welding. Engineered for use with the Fronius MTG 320i MIG Gun—commonly paired with the TransSteel 2200 welding system—this contact tip represents the high standard of manufacturing expected from Fronius. Aluminum welding presents unique challenges compared to steel, primarily due to the softness of the wire and its high rate of thermal expansion. Using a generic contact tip often leads to feeding issues, micro-arcing, and premature failure. This genuine Fronius component addresses those issues with a bore geometry strictly toleranced for .045" (1.2mm) aluminum wire.

The tip features an M8x1.5 thread, providing a robust mechanical connection that maximizes thermal transfer and electrical conductivity. This is essential in aluminum applications where maintaining a stable arc is dependent on consistent current transfer at the contact point. The 10mm outer diameter and 32mm length conform to the standard geometry required for the MTG 320i gas nozzle assembly, ensuring proper gas coverage and shielding. By utilizing the correct metallurgy and bore size, this contact tip minimizes friction, allowing the softer aluminum wire to feed smoothly without shaving or bird-nesting at the drive rolls.

Industrial environments demand reliability. This 10-pack configuration ensures that welding operators have immediate access to replacements, maintaining workflow continuity. Whether fabricating automotive components, marine vessels, or general aluminum structures, the integrity of the weld bead starts at the contact tip. This product ensures that the advanced waveform control of the TransSteel 2200 is delivered effectively to the workpiece.

Technical Specifications

This contact tip is identified by the internal reference 42.0001.4751.10. It is distinct from steel-specific tips, which often have tighter tolerances that can cause aluminum wire to seize when hot. The "A1" designation in related nomenclature often refers to the specific geometry and alloy composition optimized for this application. Operators should verify that their liner and drive rolls are also set up for aluminum to achieve the best results with this contact tip.