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Resistance-Welding Electrodes

Luvata is one of the most respected manufacturers of resistance-welding electrodes. Our resistance-welding electrodes are used on robotic welding machines, primarily in automotive applications. 

The unique blend of superior alloy composition and proprietary cold working properties enhances the welding performance of our electrodes in adverse welding conditions created by coated materials.

The Ideal Solution for Resistance Welding Coated Steels

The introduction of galvanised and high strength steels, as well as a variety of newly developed coatings in automotive manufacturing have created new challenges for resistance welding.

Zinc, higher strength steels and other coatings can have adverse effects on the performance and life of cap welding electrodes, leading to premature wear and tear, sticking and increased dressing frequencies to maintain quality welds.  As a result, traditional welding with chrome and/or chrome zirconium alloy electrodes has become inefficient and costly.

Our resistance-welding electrodes have been designed to overcome these challenges and provide the ideal solution for demanding welding conditions. 

In today’s resistance welding market, cap electrodes are manufactured from three materials: 

  • AL2O3
  • CrCuZr
  • CuZr



CuCrZr.  C18150, RWMA Class 2.  The lower percentage of chrome in comparison to the standard Class 2 CuCr material and the addition of Zr to this Copper alloy discourages the alloying affect of zinc and copper to form brass on the electrode face and helps to prevent sticking. 

» Read more about A-Trode®


Luvata A-Trode



0.5% AL2O3 in Copper.  Dispersion Strengthened Copper C15725, RWMA Class 20.  A cost effective alternative to Nitrode.




1.1% AL2O3 in Copper.  Dispersion Strengthened Copper C15760, RWMA Class 20.  The most cost effective cap electrode available for resistance welding applications.

» Read more about Nitrode®


Luvata Nitrode


Nitrode Composite

A welding cap electrode with a Nitrode (C15760) core or insert, and a Z-Trode (CuZr C15000) jacket.  Provides the performance of the full-bodied, Nitrode, while reducing the overall cost of welding.

» Read more about Nitrode Composite 




Our P-Cap is a self-dressing electrode that maintains a constant current density across the weld face under typical welding forces.  It should be used with either the Nitrode Cupal or Z-Trode materials for the best results.

» Read more about P-Cap




CuZr. C15000, RWMA Class 1.  Superior electrical conductivity, resistance to sticking and annealing make this copper alloy material one of the most cost effective materials for welding light-to-medium gauge coated and uncoated steels.

» Read more about Z-Trode® 


Luvata Z-Trode



For brochures and other downloads, visit the document library

Advantages of Cold Heading or Forming

  • Fully cold forming hardens the alloy
  • Material cost savings in comparison to machining
  • Faster process than machining

Cold heading is ideal for manufacturing large quantities of parts for high volume users.

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