340P123069 - ESAB M6 x 28mm Contact Tip - 1.2mm CuCrZr High-Performance MIG Tip

Technical Overview of the ESAB CuCrZr Contact Tip

The ESAB 340P123069 is a premium-grade contact tip designed for industrial MIG/MAG welding applications requiring high durability and precision. Engineered with an M6 thread and a total length of 28mm, this component is manufactured from Copper Chromium Zirconium (CuCrZr), a precipitation-hardened alloy known for its superior physical properties compared to standard Electrolytic Copper (E-Cu). The inclusion of chromium and zirconium significantly increases the recrystallization temperature of the alloy, allowing it to maintain structural integrity and hardness at elevated temperatures often encountered in high-duty-cycle welding or spray transfer modes.

This specific contact tip features a precision-machined bore sized for 1.2mm (0.045-inch) welding wires. The internal tolerance is critical for maintaining consistent electrical contact with the wire as it feeds through the gun. In automated or semi-automatic processes, the stability of the tool center point (TCP) and the consistency of the arc are directly influenced by the quality of the contact tip. The CuCrZr material exhibits a hardness of approximately 168 HV (Vickers Hardness), compared to the ~110 HV of standard copper, providing exceptional resistance to mechanical wear caused by the friction of the feeding wire. This results in a bore that remains true to size for longer periods, preventing the "keyholing" effect that leads to erratic arcs and micro-arcing within the tip.

Electrical conductivity is maintained at a high level to ensure efficient current transfer to the welding wire. The 28mm length is a standard dimension for many ESAB PSF series torches and other Euro-style MIG guns, ensuring broad compatibility. By utilizing this high-performance alloy, operators can reduce the frequency of consumable changes, thereby increasing overall equipment effectiveness (OEE) in production environments. This tip is particularly recommended for applications involving steel and stainless steel where heat buildup is significant.

Key Technical Specifications

• Material Composition: Copper Chromium Zirconium (CuCrZr)


• Thread Specification: M6


• Overall Length: 28mm


• Wire Compatibility: 1.2mm (0.045")


• Thermal Resistance: Resists softening up to approx. 500°C


• Wear Resistance: High resistance to abrasive wire wear