Typical C17500 alloys are formulated with approximately 0.4% to 0.7% Beryllium (Be) and 2.4% to 2.7% Cobalt (Co), with the remainder being high-purity Copper (Cu). The presence of cobalt allows for a significant reduction in the amount of beryllium required to achieve precipitation hardening compared to high-strength beryllium copper alloys like C17200, which typically contain around 2.0% beryllium. During solution heat treatment and subsequent aging, fine-scale intermetallic precipitates (specifically cobalt beryllides) form uniformly within the copper matrix. These precipitates distort the lattice and act as strong barriers to dislocation movement, dramatically increasing the yield and tensile strength while maintaining a clean, highly conductive copper matrix.
Unlike standard brasses or bronzes that soften rapidly at elevated temperatures, Beryllium Cobalt Copper alloys demonstrate exceptional thermal stability, retaining their physical properties up to 450°C. They exhibit electrical conductivities of up to 45-60% IACS (International Annealed Copper Standard) combined with tensile strengths exceeding 750 MPa. These dual capabilities make them indispensable for heavy-duty switchgear, spring contacts, liquid-cooled electrical components, and core inserts in injection molds where rapid cycle times and structural integrity are paramount.
High-voltage relay switches, battery terminals, and quick-charging stations require high-current capacity without generating excessive resistive heat. C17510 is highly favored here due to its thermal dissipation properties.
Next-generation high-frequency coaxial connectors and RF components require structural reliability and superior wear resistance during repetitive mating cycles, demanding precise copper alloys.
In polymer injection molds and plasma cutting nozzles, C17500 acts as a core material to conduct heat away rapidly, reducing cycle times and preventing thermal deformation or accelerated wear.
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 mainly applied in high-tech fields such as 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, Kepai boasts 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.
At Kepai, supply chain resilience is built directly into our production floor. From raw electrolytic copper cathode procurement to final vacuum casting, extrusion, drawing, and age hardening, every single process step is monitored using digitized manufacturing execution systems (MES). By standardizing procedures and tracking material heats with unique identifiers, we prevent contamination and offer 100% material traceability back to the raw source, giving global buyers peace of mind regarding compliance (RoHS, REACH) and structural purity.
By maintaining significant raw material buffers and partnering with multiple domestic smelting facilities, we insulate our global clients from sudden supply shocks. Furthermore, Sichuan's robust logistics infrastructure, linked to major shipping ports via fast-rail networks, enables us to offer predictable delivery times. Whether exporting to North America, Europe, or the Asia-Pacific region, we ensure our high-conductivity copper alloys reach your facilities without delays.
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.
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.
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.
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.
Smelting
laying-off
extrusion
drawing
straightening
package
eddy current conductance instrument
Chemical composition test room
Metallographic sample polishing machine
Microcomputer controlled universal testing machine
Liquid crystal display testing machine
Hardness tester
Automotive body-in-white fabrication requires fast, repetitive spot welding of galvanized steel sheets. Standard copper-chromium-zirconium electrodes soften and deform under severe compression and contact heat, causing weld quality drift. In contrast, C17500 electrodes withstand high-pressure clamping forces without tip mushrooming, while delivering enough electrical current to produce reliable spot welds at speeds exceeding hundreds of cycles per minute.
In manufacturing thin-walled consumer electronics casings, cooling rate controls productivity. Implementing Beryllium Cobalt Copper inserts in the mold core facilitates high-speed heat extraction from the molten polymer. This rapid thermal conduction decreases cooling cycle times by up to 35%, avoids part warpage, and ensures high dimensional tolerance in high-volume production runs.
EV battery management systems rely on high-voltage relays to connect and isolate the electrical pack. Under peak acceleration or rapid charging, these contacts experience intense current loads. C17510 sheets are utilized for relay contact springs because they maintain high electrical conductivity alongside the mechanical spring force required to ensure perfect circuit contact under continuous vibration.
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