Premium engineering materials including Tellurium Copper, Beryllium Copper, Sulfur Copper, and custom alloys engineered for precision performance.
Established in 2017, Sichuan Kepai New Materials Co., Ltd. is a premier high-tech enterprise dedicated to the research, development, manufacturing, and global sales of advanced functional copper materials. Our facilities cover an expansive 9,000 square meters of specialized production zones, backed by modern administrative offices extending across 1,000 square meters. The company is strategically situated in the western zone of the Sichuan Guanghan Industrial Development District, directly adjacent to National Highway 108, providing rapid transport infrastructure access to crucial global shipping corridors.
At Kepai, we specialize in high-performance copper products defined under key industrial strategic frameworks, including pure purple copper, oxygen-free tellurium copper, chromium zirconium copper, beryllium copper, silver copper, and high-performance dispersion strengthened copper alloys. These products serve as the foundational electrical and thermal conductors for structural components across new energy vehicles (NEVs), 5G networks, aerospace systems, advanced plasma/laser cutting equipment, and state-of-the-art energy storage systems.
"We drive innovation through material science, bridging the gap between high strength and maximum electrical conductivity to accelerate clean energy transitions globally."
An authoritative analysis of procurement trends, metallurgical innovations, and regulatory landscapes shaping high-performance electrical conductors.
As the international community transitions toward a decarbonized economy, "Purple Copper" (the traditional term for pure red copper, typified by high-conductivity variants such as C11000, C10100, and C10200) has emerged as a cornerstone of green infrastructure. Global procurement strategies are shifting from purchasing simple commodity-grade raw metals to sourcing customized, precision-engineered copper alloys. Advanced systems in electric vehicle (EV) drivetrains, high-voltage distribution networks, and optical-telecommunication modules require structural materials that maintain superior electrical conductivity while offering high tensile strength, wear resistance, and high-temperature dimensional stability.
Procurement directors in Europe, North America, and East Asia prioritize supply chain reliability, zero-defect quality programs, and compliance with ecological mandates. The integration of trace alloying elements—such as Tellurium, Beryllium, Sulfur, Chromium, and Zirconium—enables manufacturers to supply alloys that can withstand the mechanical pressures of automated stamping, deep-drawing, and high-speed CNC machining without losing the inherent conductive properties of the copper matrix.
Traditional pure purple copper, despite its superior electrical conductivity (≥100% IACS), possesses inherent metallurgical constraints: low yield strength and poor free-machining performance. In high-volume manufacturing environments, this results in high tool wear, burr formation, and component deformation. Sichuan Kepai solves these structural bottlenecks by engineering specialized tellurium and sulfur-alloyed copper materials (such as Kepai C14500 and C14700).
By precisely controlling the dispersion of secondary phases within the copper matrix, we achieve a machinability rating of 85% to 90% relative to free-cutting brass, while preserving over 93% to 98% IACS electrical conductivity. This material innovation is critical for the production of EV charging connectors, heavy-duty contactors, and high-power plasma torch nozzles, where thermal management and long-term durability are critical factors.
Technical Focus: Understanding the IACS (International Annealed Copper Standard) Conductivity Balance
Standard copper alloys typically experience a sharp drop in electrical conductivity when tensile strength is increased via alloying. Sichuan Kepai’s metallurgy focuses on micro-alloying and controlled precipitation hardening (e.g., in Chromium-Zirconium-Copper C18150 and High-Strength C19160), allowing the material to reach a high yield strength (>500 MPa) while maintaining an electrical conductivity ≥80% IACS.
Why global OEMs choose Sichuan Kepai as their strategic partner for high-precision metallurgical applications.
Technological innovation is our core competitive advantage. Our dedicated research and development team, comprised of senior metallurgical experts, collaborates closely with premier research institutions. By combining proprietary vacuum-casting technologies with advanced thermal-mechanical treatment profiles, we have pioneered the production of high-performance tellurium, lead, and sulfur-free cutting copper alloys. Our technical solutions are widely integrated in high-speed rail distribution, aerospace relays, and laser cutting heads.
We provide a comprehensive range of copper alloy solutions. Our portfolio spans from ultra-high purity oxygen-free copper to complex multi-element precipitation-hardened alloys. Key product lines include UNS C14500 (Tellurium Copper), UNS C18150 (Chromium Zirconium Copper), UNS C17200/C17300 (Beryllium Copper), and eco-friendly free-machining sulfur copper. This extensive product variety allows engineers to optimize material selection for specific conductivity, hardness, and corrosion resistance requirements.
Adhering to our growth strategy of "Rooted in Sichuan, radiating nationwide, and moving toward the world," Kepai has built a robust distribution and customer support network that services key manufacturing clusters globally. Our products are exported to industrial centers in Europe, North America, Southeast Asia, and the Middle East. We provide direct technical support and localized inventory management solutions to streamline the procurement process for our international clientele.
Our vertically integrated production and advanced testing labs ensure that every batch meets rigorous international specifications.
Smelting Furnace
Laying-off Station
Extrusion Press
Precision Drawing Machine
Alloy Straightening
Packaging & Protection
Eddy Current Conductance Tester
Chemical Composition Lab
Metallographic Polish Machine
Servo Universal Tester
Electronic Universal Tester
Precision Hardness Tester
Sichuan Kepai's engineering roadmap centers on three key priorities: ultra-high purity, micro-alloy structural stability, and environmentally friendly manufacturing. Our current R&D efforts focus on reducing lead concentrations in free-machining alloys to comply with future European Union RoHS and REACH exemptions.
By using tellurium and sulfur as alternative free-cutting additives, we achieve excellent chip-breaking characteristics under high feed rates, while eliminating the health hazards associated with lead vapors during casting and machining. Additionally, we are developing vacuum-melted, oxygen-free copper rods with oxygen levels below 3 ppm. This material is critical for high-frequency microwave tubes and superconductive magnet assemblies.
Our quality management systems are certified to ISO 9001, ISO 14001, and ISO 45001. We maintain comprehensive traceability for every batch we produce, from the initial raw cathode copper sorting through smelting, extrusion, drawing, and final non-destructive testing.
Note: Original certifications covering RoHS, REACH, and environmental management compliance registries.
Answers to critical technical and logistical questions asked by procurement officers and design engineers.
Discover our highly specialized grades designed for deep stamping, high-frequency connectivity, and heavy-duty wear resistance.
Sichuan Kepai New Material Co., Ltd. remains dedicated to advanced research and engineering excellence in the field of high-performance copper materials. Contact our engineering team today to request a quote or discuss custom metallurgical specifications.
Kepai
