Explore our primary selection of strategic copper materials optimized for cold and hot processing, engineered for high-precision components in automotive, electrical, and aerospace projects.
In modern precision metallurgy, copper processing stands as a cornerstone of advanced electrical, thermal, and mechanical engineering. High-performance alloys like tellurium copper, beryllium copper, and chromium zirconium copper do not achieve their target properties through chemical composition alone. Instead, their microstructural properties are highly dependent on the strategic combination of hot working and cold working stages.
"Hot working refines the cast grain structure through dynamic recrystallization, whilst cold deformation creates dislocation networks that drastically increase tensile strength and yield performance without compromising electrical conductivity."
Performed above the recrystallization temperature (typically 650°C to 900°C for copper alloys), hot working (such as dynamic extrusion and continuous rolling) breaks down coarse dendritic structures. This stage is key for eliminating internal porosity, achieving microstructural homogeneity, and preparing the alloy matrix for downstream fabrication stages.
Executed below the recrystallization threshold, cold drawing and stamping increase hardness and yield strength through work hardening. This enables the fabrication of parts with tight dimensional tolerances, high surface finishes, and specific tempers required by advanced applications, like high-current electrical relays.
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. The products are mainly applied in high-tech fields such as new energy vehicles, 5G technology, laser cutting, and lithium battery relays.
Strategically 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. This location establishes 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.
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, earning widespread recognition and praise in the market.
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.
As clean energy, electrical vehicle grids, and ultra-high-speed telecommunications advance, the metallurgical requirements for raw inputs are reaching unprecedented standards. Traditional casting processes are being replaced by high-purity vacuum continuous casting followed by multi-stage thermodynamic processing.
Focusing on trace additions of Te, P, Zr, and Be to manipulate phase boundaries. Elevating copper purity levels reduces grain boundary resistance, pushing electric conductivity above 95% IACS even after structural cold deformation steps.
Uplifting mechanical properties of chromium-zirconium and beryllium copper alloys via heat treatment kinetics. Optimizing quenching temperatures and age-hardening cycles induces uniform nanometer-scale phase precipitation, creating strong barrier effects against dislocation motion.
Developing alternative lead-free brasses and copper materials (using sulfur and tellurium inclusions). This ensures superior machinability on high-speed CNC centers without the environmental liabilities of traditional leaded copper.
Specialty copper alloys are critical components in major industrial systems. By managing both hot forming and cold drawing in-house, Sichuan Kepai ensures consistent metallurgical properties tailored to specific industry demands.
High-voltage charging terminals and solid connectors require tellurium and chromium-zirconium copper alloys due to their high electrical conductivity and resistance to thermal softening. Kepai's materials maintain low contact resistance and thermal stability under rapid charging currents.
High-frequency RF coaxial connectors and coaxial switches demand dimensional precision and consistent signal transmission. Our high-strength cold-drawn beryllium copper and phosphor copper provide the necessary elastic limit and fatigue resistance for micro-machined pins.
Heavy-duty contactors and electrical relays require high-conductivity oxygen-free copper and dispersion copper. Precision cold working ensures these alloys resist welding under high inrush currents and maintain structural integrity over thousands of operational cycles.
Plasma cutting nozzles and gas tips require materials that can withstand extreme temperatures and electrical arc erosion. Tellurium copper (C14500) provides the necessary combination of thermal dissipation and high-speed machinability for these consumable parts.
At our manufacturing facility in Guanghan, Sichuan, we oversee the entire production chain from raw material smelting to final inspection. Our facility utilizes advanced hot extrusion systems and multi-pass cold drawing benches, supported by online diagnostic testing.
Smelting
Laying-off
Extrusion
Drawing
Straightening
Package
Eddy Current Conductance Instrument
Chemical Composition Test Room
Metallographic Polishing
Universal Testing Machine
Electronic Universal Machine
Hardness Tester
Sichuan Kepai operates in accordance with strict international standards. Our quality assurance systems verify that chemical and mechanical properties comply with ASTM, EN, JIS, and GB specifications. We maintain modern testing capabilities to verify electrical conductivity, tensile strength, hardness, and microstructural distribution.
For international procurement departments and design engineers, sourcing specialty copper alloys requires balancing raw material quality, logistics efficiency, and compliance with regulations like RoHS and REACH. Sichuan Kepai supports the global supply chain through key capabilities:
We provide raw alloys in multiple semi-finished formats—including rods, bars, plates, wires, and profiles—tailored to the specifications of your CNC machining or cold-heading equipment.
Located in Guanghan, Sichuan, adjacent to major transport routes, we manage logistics networks to coordinate sea, rail, and air freight shipments to destination hubs globally.
Every production batch is fully traceable. We supply complete material test reports (MTRs) detailing chemical composition, electrical conductivity (% IACS), hardness, and tensile properties.
Technical guidance regarding special copper alloy selection and processing options.
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. We look forward to working hand in hand with partners from all walks of life to create a successful future together!
Review our full technical range, including high-performance conductive alloys, phosphor bronzes, and free-machining brass materials designed for high-stress applications.
Kepai
