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Cucrzr C18150 (Copper Chromium Zirconium) is an outstanding, high-performance precipitation-hardening copper alloy. By combining trace amounts of Chromium (Cr) and Zirconium (Zr) with a high-purity copper matrix, this alloy achieves an extraordinary balance of high electrical conductivity, superior thermal conductivity, and exceptional mechanical strength at elevated temperatures.
The addition of Chromium (typically 0.5% to 1.2%) and Zirconium (typically 0.03% to 0.3%) triggers a precipitation hardening reaction during heat treatment. This process creates fine, uniformly distributed intermetallic precipitates within the copper matrix, which effectively block dislocation movement and significantly increase the material's yield strength and recrystallization temperature without compromising its electrical properties.
Unlike standard copper alloys that soften rapidly when exposed to temperatures above 300°C, Cucrzr C18150 retains its mechanical integrity and hardness up to 500°C. This makes it the premier material choice for high-stress, high-temperature applications such as resistance welding electrodes, continuous casting molds, and aerospace propulsion components.
| Property | Typical Value (C18150) | Unit |
|---|---|---|
| Chemical Composition | Cr: 0.5-1.2%, Zr: 0.03-0.3%, Cu: Bal. | % Weight |
| Electrical Conductivity | 80 - 85 | % IACS |
| Thermal Conductivity | 320 - 350 | W/(m·K) |
| Tensile Strength | 480 - 540 | MPa |
| Hardness | 75 - 85 | HRB |
| Softening Temperature | 500 | °C |
Pioneering the future of high-conductivity, high-strength special copper alloys through advanced manufacturing and rigorous R&D.
Established in May 2017, Sichuan Kepai New Materials Co., Ltd. is a high-tech private enterprise specializing in the research, development, production, and sales of high-conductivity and high-strength free-cutting copper alloys, including tellurium copper, beryllium copper, and advanced Cucrzr C18150 formulations.
Operating from a state-of-the-art 29,000 square meter manufacturing facility, Kepai has integrated advanced manufacturing technologies (Factory 4.0 principles) to ensure absolute process control. Our production lines feature automated vacuum melting, precision extrusion, cold drawing, and computerized heat-treatment furnaces. This ensures that every batch of Cucrzr C18150 meets the most stringent international standards for microstructural uniformity and mechanical performance.
With over 30 patent certificates and a dedicated, independent R&D team, Kepai continuously pushes the boundaries of copper metallurgy. We serve over 1,000 global customers, delivering customized alloy solutions that power critical industries worldwide.
Meeting the rigorous standards of international supply chains through strict quality management and localized support.
Our manufacturing processes are fully certified under ISO9001:2015 (Quality Management), ISO14001:2015 (Environmental Management), and OHSAS 45001:2018 (Occupational Health and Safety). We ensure complete traceability from raw material cathode copper to finished Cucrzr C18150 rods, bars, and plates.
Environmental protection is central to our operations. All Kepai copper alloys, including our Cucrzr C18150, are fully compliant with global environmental directives, including RoHS and REACH. We employ eco-friendly production methods to minimize carbon footprint and waste.
With a robust domestic market share, Kepai has established a highly reputable export network spanning Europe, the Americas, and Southeast Asia. We offer comprehensive localization support, including customs clearance assistance, flexible packaging solutions, and 24/7 technical engineering support.
Delivering unparalleled performance across high-stress, mission-critical industrial sectors.
In electric vehicles, Cucrzr C18150 is widely utilized in high-current connectors, battery terminal busbars, and charging interface contacts. Its high conductivity minimizes resistive power losses, while its mechanical strength prevents deformation under repeated mating cycles.
For aerospace applications, C18150 is the material of choice for rocket engine combustion chamber liners, nozzle expansion cones, and high-temperature electrical connectors. Its ability to withstand extreme thermal gradients while maintaining structural integrity is unmatched.
Cucrzr C18150 exhibits excellent resistance to seawater corrosion and marine biofouling. It is widely applied in offshore drilling equipment components, marine heat exchangers, and underwater electrical connectors requiring high mechanical reliability.
As global industries transition toward higher power densities and extreme operating environments, the demands placed on copper alloys are evolving rapidly. Sichuan Kepai New Materials Co., Ltd. is actively driving the technical roadmap for the next generation of Cucrzr C18150 alloys.
By implementing advanced Vacuum Induction Melting (VIM) and vacuum arc remelting (VAR) processes, we are reducing trace impurities (such as oxygen, sulfur, and bismuth) to sub-ppm levels. This ultra-pure matrix significantly enhances the alloy's fatigue life and electrical conductivity, pushing performance closer to the theoretical limits of copper.
We are developing spherical, gas-atomized Cucrzr C18150 powders specifically optimized for Selective Laser Melting (SLM) and Electron Beam Melting (EBM). This enables aerospace and automotive engineers to print complex, internal-cooling-channel components (such as rocket nozzles and induction coils) directly, bypassing traditional machining limitations.
Our R&D team is exploring the addition of quaternary trace elements to create nano-scale coherent precipitates. This micro-alloying approach aims to raise the continuous operating temperature of C18150 beyond 550°C while maintaining an electrical conductivity above 82% IACS.
Expert answers to technical and procurement questions regarding Cucrzr C18150 alloys.
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