Explore our state-of-the-art alloy systems engineered for superior electrical conductivity, extreme thermal resistance, and exceptional durability.
C18150 Chromium Zirconium Copper is a premium precipitation-hardening copper alloy that achieves high mechanical performance and remarkable thermal stability through meticulously controlled hot extrusion, cold working, and aging treatments. Key elements—Chromium (Cr) at 0.5% to 1.5% and Zirconium (Zr) at 0.05% to 0.25%—form nanoscale precipitates in the copper matrix.
Unlike unalloyed copper, which softens rapidly at temperatures above 200°C, C18150 maintains its strength, hardness, and shape at high operating temperatures up to 500°C. This makes it an indispensable structural material for resistance welding, EV contactors, power transmission, and molds where severe thermal stress is paired with demands for electrical conductivity exceeding 80% IACS.
| Alloy Grade | Chemical Composition | Electrical Conductivity | Hardness Range | Softening Temp | Primary Industrial Applications |
|---|---|---|---|---|---|
| C18150 (CuCr1Zr) | Cr: 0.5-1.5%, Zr: 0.05-0.25%, Cu: Bal. | ≥ 80% IACS | 75 - 90 HRB | 500 °C | Resistance Welding, EV Relays, Continuous Casting Molds |
| C17200 (Beryllium Copper) | Be: 1.8-2.0%, Co+Ni: ≥0.2%, Cu: Bal. | 22 - 28% IACS | 36 - 42 HRC | 320 °C | Heavy-Duty Connectors, Aerospace Bushings, Springs |
| C11000 (Pure ETP Copper) | Cu: ≥99.90% | ≥ 100% IACS | 35 - 45 HRB | 200 °C | Bus Bars, Electrical Conductors, Grounding Systems |
| C18200 (Chromium Copper) | Cr: 0.6-1.2%, Cu: Bal. | ≥ 80% IACS | 65 - 80 HRB | 450 °C | Welding Electrodes, Circuit Breaker Parts |
How next-generation industrial demands drive refinement in metallurgical processes and micro-alloying techniques.
The rise of metal 3D printing (LPBF) demands gas-atomized C18150 spherical powders. Next-gen alloy designs focus on eliminating cracking during rapid solidification while retaining superior conductivity for rocket propulsion nozzles and custom heat exchangers.
Through innovative rotary swaging and equal-channel angular pressing (ECAP), we aim to refine the copper grain size to the sub-micron scale, pushing the limits of tensile strength beyond 600 MPa while maintaining standard conductivity levels.
Global regulations pressure manufacturers to phase out toxic trace elements. C18150 serves as an environmentally safe alternative to beryllium-containing copper alloys, avoiding strict workplace exposure hazards while maintaining high performance.
Innovating high-conductivity and high-strength special copper solutions since 2017.
Established in 2017, Sichuan Kepai New Materials Co., Ltd. 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.
Our company primarily engages in the production of strategic emerging new materials, including special copper alloys such as tellurium copper, high-conductivity oxygen-free copper, silver copper, and dispersion copper. We place immense focus on research and development for high-conductivity, easy-to-machine, high-strength copper alloys.
These specialized alloys are applied globally in cutting-edge industries including new energy vehicles, 5G technology, laser cutting, and lithium battery relays. Located in the western area of the Sichuan Guanghan Industrial Development Zone, adjacent to National Highway 108, our superior geographical location ensures reliable logistical networks for timely shipments worldwide.
Addressing technical pain points across crucial global industries with high-performance copper properties.
In high-throughput automotive assembly lines, robotic weld caps require materials that resist deformation under extreme temperatures and pressures. C18150 offers the ideal balance of wear resistance, electrical conductance, and anti-sticking properties to optimize production uptime.
Electric vehicles run on high-current pathways that generate massive Joule heating. C18150 components minimize electrical losses, prevent contact welding, and extend the functional lifespan of vehicle battery management systems and charging plugs.
Steel and metal casting requires molds that dissipate heat rapidly to ensure uniform solidification of billets. C18150's high thermal conductivity coupled with thermal fatigue resistance makes it the industry benchmark for casting mold longevity.
Every step of our production workflow—from vacuum smelting to micro-mechanical testing—is monitored to maintain structural uniformity.
Smelting
Laying-off
Extrusion
Drawing
Straightening
Package
Eddy Current Conductance Instrument
Chemical Composition Test Room
Metallographic Sample Polishing
Electro-hydraulic Testing Machine
LCD Electronic Testing Machine
Hardness Tester
Our materials comply with rigorous industrial testing parameters. We hold full ISO certifications and safety documentation for smooth global integration.
Why engineering departments and procurement officers globally choose Sichuan Kepai as their long-term partner.
Technological innovation is the core competitiveness of Sichuan Kepai New Materials Co., Ltd. The company has a research and development and production team composed of senior industry experts who keep pace with international cutting-edge technology trends and continuously explore the unknown boundaries in the field 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. Many of its technological achievements have reached international advanced levels and have been successfully applied in various industries such as new energy vehicles, precision machining parts, plasma cutting, relays, and energy storage.
Kepai's product line is rich and diverse, covering a comprehensive range of solutions from basic materials to high-end customization. We focus on providing customers with high-performance, high-quality high-end copper alloy products, including but not limited to 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 products play an important role in reducing production costs and enhancing product performance due to their excellent physical and chemical properties and environmental friendliness, creating significant economic and social benefits for customers.
In the face of global market competition, Sichuan Kepai New Materials adheres to the development strategy of "rooted in Sichuan, radiating nationwide, and moving towards the world." By continuously optimizing market layout and improving the sales network, we have established a stable customer base in multiple provinces and cities across the country and have formed long-term cooperative relationships with several internationally renowned enterprises.
At the same time, the company actively expands into overseas markets, participates in international competition and cooperation, and strives to promote Kepai's brand influence on the global stage.
We understand that the long-term development of an enterprise is inseparable from an excellent corporate culture. We advocate the corporate spirit of "integrity, innovation, collaboration, and win-win," encouraging employees to explore boldly and innovate courageously, while also emphasizing teamwork and talent cultivation, striving to create a harmonious, open, and inclusive work atmosphere. We believe that only by continuously pursuing excellence and creating value can we win the trust of customers and the respect of society.
Discover additional high-conductivity products suited for complex industrial components and extreme applications.
Helpful technical guidance for purchasing departments, design engineers, and QA managers.
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
