Discover our comprehensive collection of advanced copper alloys engineered to meet demanding structural and electrical conditions globally.
How Chromium-Zirconium-Copper (CrZrCu) alloy addresses critical material demands in heavy-duty manufacturing and energy transmission sectors.
Modern electrical systems, automotive structural resistance welding, and high-frequency power units demand materials that exhibit high electrical conductivity without losing structural integrity at elevated temperatures. Ordinary copper suffers from recrystallization and rapid softening when exposed to temperatures exceeding 200°C. This degradation compromises component lifespans, causing premature joint failure and localized thermal runaways in automated production environments.
C18150 (CrZrCu - Chromium Zirconium Copper) is engineered specifically to tackle this thermal challenge. Through precise metallurgical solution treatment and precipitation aging processes, sub-micron chromium and zirconium particles precipitate within the copper matrix. This secondary phase structure blocks dislocation movements, raising the softening temperature of the alloy to above 500°C while maintaining an electrical conductivity of over 80% IACS. This makes it an invaluable asset for resistance welding electrodes, continuous casting molds, and structural heat-dissipation plates.
Reducing energy losses in high-amperage applications (such as electric vehicle power relays, 5G base stations, and high-speed rail distribution networks) requires maximum electrical performance. The Cu-Cr-Zr lattice configuration of C18150 minimizes electron scattering while providing the mechanical hardness necessary to withstand mechanical wear and vibration in heavy-duty environments.
Components in contact with molten metals (such as crystallization molds in metallurgical plants) or high-temperature plasma jets require excellent thermal fatigue resistance. C18150 plates exhibit superior crack propagation resistance and mechanical hardness, minimizing cracking under cyclic thermal expansions and contractions.
Sichuan Kepai New Materials Co., Ltd., established in 2017, is a high-tech enterprise integrating research and development, production, and sales. Currently, the factory covers an area of approximately 9,000 square meters, with an office space of about 1,000 square meters.
The company primarily engages in the production of strategic emerging new materials for the national 13th Five-Year Plan, including special copper alloys such as tellurium copper, high-conductivity oxygen-free copper, silver copper, and dispersion copper, while also focusing on the research and development of high-conductivity, easy-to-machine, high-strength copper alloys. Our products are widely applied in high-tech fields such as new energy vehicles, 5G technology, laser cutting, and lithium battery relays.
The company is located in the western area of the Sichuan Guanghan Industrial Development Zone, adjacent to National Highway 108, boasting a superior geographical location and convenient transportation, which lays a solid foundation for the rapid development of the enterprise. Since its establishment, Kepai has adhered to the business philosophy of "innovation-driven development, quality wins the market," committed to providing customers with the highest quality high-end copper alloy materials, and promoting industrial upgrading and sustainable development.
Pioneering specialized copper alloy R&D and manufacturing processes.
Industrial-scale facilities designed for high-precision metallurgical production.
Engineering labs housing structural test systems and quality control experts.
Positioning Sichuan Kepai on the global market as an authorized manufacturer complying with multi-national requirements.
C18150 (Chromium Zirconium Copper) alloy plates are manufactured under strict international standards to guarantee global inter-changeability in precision machinery lines. Understanding equivalent designations is critical for procurement and engineering pipelines:
| Country / Standard Organization | Alloy Designation |
|---|---|
| United States (ASTM/UNS) | C18150 / UNS C18150 |
| Europe (EN / DIN) | CuCr1Zr / CW106C |
| Japan (JIS) | C18150 |
| Resistance Welder Manufacturers' Assoc. | RWMA Class 2 |
Our casting processes ensure compliance with chemical compositions and mechanical properties defined by these major industrial regulatory bodies, facilitating export and direct component substitution across the Americas, Europe, and Asia-Pacific.
Kepai's market strategy is summarized by our core policy: "rooted in Sichuan, radiating nationwide, and moving towards the world." We are active contributors to the global supply chain, serving as a trusted raw material supplier for large-scale OEMs and distributors.
Our logistical frameworks are optimized for containerized transport, securing the raw alloy plates in moisture-controlled vacuum packaging to prevent surface oxidation during transit. Combined with digital tracking and customs compliance workflows, Sichuan Kepai ensures that our raw materials arrive at client production lines ready for mechanical machining.
From vacuum induction smelting to advanced metallographic inspections, we control every parameter to guarantee material reliability.
Sichuan Kepai employs a closed-loop manufacturing flow. Technological innovation is our core competitiveness. We feature a research and development and production team composed of senior industry experts who keep pace with international cutting-edge technology trends and explore the limits of new copper alloy materials. Through a combination of independent research and development and industry-university-research collaboration, Kepai has made breakthrough progress in several areas, including high-performance tellurium copper, lead copper, and sulfur copper.
Our raw material undergoes induction melting, hot extrusion, cold drawing, and heat treatments. These stages are backed by rigorous mechanical testing equipment, verifying alloy structural density, chemical homogeneity, and performance stability under thermal loads. This high standard of quality control makes our products suitable for high-tech sectors including electric vehicles, plasma cutting, relays, and energy storage.
Smelting
laying-off
extrusion
drawing
straightening
package
eddy current conductance instrument
Chemical composition test room
Metallographic sample polishing machine
Microcomputer controlled electro-hydraulic servo testing machine
Liquid crystal display electronic universal testing machine
Hardness tester
From automotive robotic welding cells to electric vehicle (EV) charging stations, C18150 plates serve critical technical roles.
Automobile chassis fabrication lines utilize automated robotic spot-welding components that must maintain high mechanical pressure and carry currents exceeding 10,000 Amps. C18150 plates are machined into welding caps, shafts, and backup bars, offering deformation resistance and preventing alloy transfer with coated steel plates (such as galvanized sheets).
High-power fiber laser machines and gas plasma cutting torches operate under intense heat. The gas delivery nozzle must rapidly dissipate heat to preserve cutting accuracy and prevent tip erosion. C18150 plates serve as the structural base for high-durability, long-life nozzles used in sheet metal fabrication.
Electric vehicle batteries require copper alloys that can withstand thermal cycling during rapid charging. C18150 provides the mechanical strength and low resistance needed for high-voltage DC contactors and relays, helping to prevent contact sticking and thermal wear.
Our portfolio is rich and diverse, covering a comprehensive range of solutions from basic materials to specialized compositions.
Kepai's product line covers high-performance, high-quality copper alloy products, including pure copper, oxygen-free copper, oxygen-free high-conductivity tellurium copper, nickel tellurium copper, tin bronze, beryllium copper, lead bronze, sulfur copper, and chromium zirconium copper. These alloys are formulated to reduce raw-material overhead, optimize machining throughput, and ensure mechanical reliability, providing long-term value for our industrial clients.
Our commitment to international environmental, safety, and chemical control regulations ensures smooth supply chain operations.
Our raw materials comply with the European Union's Restriction of Hazardous Substances (RoHS) Directive and the REACH chemical registry regulations. By verifying that hazardous contaminants remain within permissible ppm ranges, we support compliance for end products intended for European and North American markets.
Sichuan Kepai offers localized engineering and warehousing support to address supply chain volatility. Our metallurgical experts assist with technical parameters, structural dimensions, machining speeds, and heat treatments, helping client engineering teams resolve integration challenges.
Exploring advanced metallurgy to drive next-generation copper alloy developments.
Looking ahead, Sichuan Kepai New Materials Co., Ltd. will continue to focus on research and application in the field of new materials, contributing to the development of the new copper alloy materials industry in China and globally. We aim to address key market trends: further refinement of precipitated phases, improvement of mechanical strength without reducing electrical conductivity, and reduction of energy consumption in manufacturing processes.
We are investing in technologies like micro-alloying and vacuum melting methods to limit dissolved oxygen and hydrogen, producing alloys that maintain high thermal stability under demanding structural loads.
Answers to common technical and metallurgical questions regarding C18150 (CrZrCu) copper plates.
Explore our full line of industrial copper formulations designed for electronic components, wear resistance, and heavy industrial machinery.
Looking ahead, Sichuan Kepai New Materials Co., Ltd. will continue to uphold its original intention, with even greater enthusiasm and determination, to engage in research and application in the field of new materials, contributing to the development of the new copper alloy materials industry in China and globally. We look forward to working hand in hand with friends from all walks of life to create a brilliant future together!
Kepai