​Product Description of Chromium-Zirconium Copper (CuCrZr) Resistance Welding Electrodes​

1. Material Characteristics​
Chromium-zirconium copper (CuCrZr) is a high-performance copper alloy composed of chromium (Cr), zirconium (Zr), and copper. It features:

• ​Excellent electrical and thermal conductivity​ (80% IACS, 43 MS/m)
• ​High hardness and wear resistance​ (HRB 78-83)
• ​Superior high-temperature performance​ (softening temperature ≥550°C)
• ​Anti-stress relaxation and anti-cracking properties​

2. Key Applications​

• ​Resistance welding electrodes: Used for spot welding, seam welding, and projection welding of carbon steel, stainless steel, and coated steel sheets. Suitable for electrode caps, rods, holders, and molds in spot welding machines.
• ​Electrospark machining (EDM): Ideal for creating mirror-like surfaces and thinning hard-to-machine materials (e.g., tungsten steel).
• ​Other industrial uses: Including electrical contacts, heat sinks, molds (e.g., shoe soles, plastic molds), and components for crystallizers and die-casting machines.

3. Performance Advantages​

• ​Reduced electrode wear: Low material loss during welding, extending tool life and lowering costs.
• ​High welding efficiency: Faster welding speeds and stable performance under pressure.
• ​Cost-effective: More economical than alternatives like beryllium copper while meeting most industrial requirements.

4. Material Specifications​

• ​Chemical composition: Typically 0.1-0.8% Cr, 0.3-0.6% Zr (varies by grade, e.g., C18150, C18200).
• ​Standards compliance: Meets ISO 5182-1978(E) and other international standards for hardness, conductivity, and temperature resistance.

5. Processing Considerations​

• ​Machinability: Can be processed by turning, milling, stamping, etc., but requires anti-rust protection post-processing.
• ​Non-magnetic: Ensure proper fixation in equipment.
• ​Limited use in electroplating: May react with zinc/nickel coatings, reducing electrode lifespan.

6. Customization and Availability​

• Available in various forms (rods, plates, etc.) and grades (e.g., C18150, C18200).
• Custom sizes and specifications can be produced upon request.

Note: For welding zinc-coated steel or nickel alloys, consider using aluminum-diffused copper for longer electrode life