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KUPROY® 1

Chromium Zirconium Copper / CuCr1Zr / KUPROY® 1

KUPROY® 1 is a high-conductivity copper alloy. By alloying copper with chromium and zirconium, its hardness is increased compared to pure copper, and it maintains its mechanical properties even at high temperatures.

DIN: 2.1293
KUPROY® 1

01. Chemical Composition (%)

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Copper (Cu) %98.7-99.7
Chromium (Cr) % 0.5-1.2
Zirconium (Zr) %0.03-0.3

02. Supply Forms

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radio_button_unchecked Hollow Bar / Pipe
sort Flat Bar / Plate
stroke_full Round Bar

03. Mechanical Properties

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Property Name Imperial (psi) Metric (MPa) Test Method
Hardness 120 - 150 HB
Tensile Strength (Rm) 400 - 500 N/mm²
Yield Strength (Rp0.2) 350 N/mm² Min.
Density 8.90 g/cm³

04. Technical Resources

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05. Compliance Standards

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DIN EN 1982 CW106C
AISI / SAE / UNS C18200
DIN (Germany) CuCrZr / 2.1293
BS CC102
AFNOR U-Cr 0.8 Zr

Areas of Use

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Resistance Welding: Spot welding electrodes, seam welding disks, and electrode holders for automotive and industrial manufacturing.
Plastic Injection Molding: High-performance cooling pins, cores, and mold inserts where rapid heat dissipation is critical.
Continuous Casting: Mold plates and components for the continuous casting of steel and non-ferrous metals.
Electrical Engineering: Heavy-duty contacts, switchgear components, and high-voltage circuit breaker parts.
Power Transmission: Connectors, studs, and terminals subject to high thermal and electrical loads.
Machined Components: Precision parts shaped via wire EDM requiring both high conductivity and mechanical strength.
Industrial Cooling: Heat exchanger components and nozzles exposed to high operating temperatures.

Notes

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KUPROY 1: CuCrZr – The Ultimate Benchmark for Conductive Performance

In the demanding sectors of resistance welding and industrial casting, thermal management is the difference between efficiency and failure. KUPROY 1 (CuCrZr), developed by Çorum Bronz, is an elite copper alloy engineered to bridge the gap between pure copper's conductivity and the structural requirements of heavy industry. By integrating Chromium and Zirconium into the copper matrix, we have created a material that thrives under intense electrical loads and extreme temperatures.

Engineering Precision: Why KUPROY 1?

KUPROY 1 is not just copper; it is a high-tech solution for heat and electricity. While pure copper softens rapidly at temperatures above 200°C, the specialized alloy structure of KUPROY 1 ensures it remains structurally sound at much higher thresholds.

  • Maximum Thermal & Electrical Conductivity: Designed for applications where rapid heat dissipation and efficient energy transfer are non-negotiable.

  • Superior Hardness & Softening Resistance: Unlike standard copper, KUPROY 1 undergoes a precision heat-treatment process (precipitation hardening), allowing it to maintain its shape and hardness during repetitive welding cycles.

  • Anti-Erosion Properties: Its metallurgical stability provides excellent resistance to electrical discharge erosion, making it the premier choice for long-lasting electrodes.

  • EDM Compatibility: Its refined grain structure is ideal for wire Electrical Discharge Machining (EDM), allowing for the creation of intricate cooling pins and complex electrode geometries.

Technical Integrity & Global Standards

At Çorum Bronz, we manufacture KUPROY 1 in strict accordance with international technical specifications, ensuring that our global partners receive consistent, high-performance material every time.

FeaturePerformance Specification
Material DesignationCuCrZr / CuCr1Zr
Standard EquivalentsEN 12163 (CW106C) / DIN 2.1293
UNS CodeC18150
Electrical Conductivity> 80% IACS
Softening TemperatureApprox. 500°C

Core Industrial Applications

KUPROY 1 is the preferred alloy for sectors where high-speed production and durability are paramount:

  1. Automotive & Resistance Welding: The primary material for spot welding electrodes, seam welding disks, and caps. It resists "mushrooming" and ensures consistent weld quality over thousands of cycles.

  2. Plastic Injection Molding: Used for high-efficiency cooling pins and mold inserts. Its high thermal conductivity reduces cycle times, significantly increasing production output.

  3. Metallurgical Casting: Crucial for continuous casting molds and cooling plates for steel and non-ferrous metal production.

  4. High-Power Electronics: Ideal for heavy-duty electrical contacts, switchgear components, and terminals that must operate without overheating.

  5. Aerospace & Defense: Precision-machined connectors and fasteners that require a high strength-to-conductivity ratio.

The Çorum Bronz Advantage

Choosing KUPROY 1 means investing in longevity. At Çorum Bronz, our production process involves rigorous chemical analysis and ultrasonic testing to ensure the absence of internal defects. We provide this specialized alloy in a wide range of formats—from round and flat bars to custom-forged blocks—tailored to your technical drawings.

Maximize your production efficiency and minimize downtime with the conductive power of KUPROY 1.

Contact us today for technical data sheets, stock availability, and global export solutions.