Inquiry
Form loading...
Explore our flagship tellurium copper and high-performance copper alloy materials — trusted by engineers and manufacturers worldwide.
C14500 Tellurium Copper (UNS C14500) is a free-machining copper alloy containing approximately 0.4–0.7% tellurium, which dramatically improves machinability while preserving the outstanding electrical and thermal conductivity of pure copper. It is one of the most versatile copper alloys available for precision component manufacturing.
With an electrical conductivity of approximately 93–95% IACS and a thermal conductivity of around 360 W/(m·K), C14500 outperforms most engineering alloys in applications requiring both high conductivity and dimensional precision. Its machinability rating of 90% (relative to free-cutting brass = 100) makes it the preferred choice for high-speed CNC machining operations.
🏆 C14500 Tellurium Copper is the industry benchmark for combining electrical conductivity, machinability, and corrosion resistance in a single alloy — ideal for Nagoya's precision manufacturing sector.
Nagoya is Japan's premier manufacturing hub — home to world-class automotive, aerospace, electronics, and robotics industries. C14500 Tellurium Copper plays a critical role in powering this industrial ecosystem.
Nagoya is the heartland of Japan's automotive industry, hosting Toyota Motor Corporation and hundreds of Tier 1 suppliers. C14500 is extensively used in electrical connectors, relay contacts, sensor housings, and EV battery terminals — components that demand both high conductivity and precision machining tolerances below ±0.01mm.
Nagoya's Chubu Centrair International Airport area hosts Mitsubishi Aircraft and major aerospace component suppliers. C14500 tellurium copper is specified for avionics connectors, waveguide components, and precision aerospace fasteners, where material reliability under extreme temperatures is non-negotiable.
As a global robotics manufacturing center, Nagoya's automation sector demands high-performance materials for servo motor components, encoder parts, and robotic arm connectors. C14500's superior machinability enables the tight tolerances required for next-generation industrial robots.
The Greater Nagoya area hosts a dense cluster of electronics manufacturers producing PCB connectors, semiconductor test sockets, and precision terminals. C14500 tellurium copper's combination of high conductivity and excellent surface finish after machining makes it indispensable for miniaturized electronic components.
With Japan's aggressive EV transition targets, Nagoya's NEV supply chain is rapidly expanding. C14500 is the material of choice for high-current charging connectors, battery management system contacts, and power distribution terminals in next-generation electric vehicles.
Nagoya's precision machining industry — serving both domestic and export markets — relies on C14500 tellurium copper for electrode materials in EDM (Electrical Discharge Machining), welding torch nozzles, and plasma cutting components, where material performance directly impacts production efficiency.
From Toyota City to the Chubu aerospace corridor — C14500 Tellurium Copper enables cutting-edge manufacturing across Nagoya's most demanding industries.
High-current DC fast-charging connectors for electric vehicles require materials with both exceptional conductivity and long-term wear resistance. C14500 delivers consistent performance in Nagoya's rapidly growing EV charging infrastructure.
Nagoya's precision fabrication shops use C14500 tellurium copper nozzles and electrodes in laser cutting and plasma cutting systems. The material's high thermal conductivity ensures excellent heat dissipation, extending nozzle service life significantly.
As Japan rolls out 5G infrastructure across the Chubu region, C14500 is used for RF connectors, antenna components, and base station hardware — where signal integrity depends on material purity and conductivity.
Nagoya's machining workshops produce millions of precision components annually. C14500's machinability rating of 90% enables high-speed turning, milling, and drilling operations with superior surface finish and minimal tool wear.
Battery management systems in lithium-ion battery packs require relay contacts with low contact resistance and high reliability. C14500 tellurium copper provides the ideal combination of conductivity and dimensional stability for these critical components.
Automotive body assembly plants in Nagoya use resistance welding extensively. C14500 tellurium copper electrodes offer superior thermal conductivity and resistance to deformation under high-pressure welding conditions, reducing downtime and improving weld quality.
Global megatrends are reshaping material requirements — and C14500 Tellurium Copper is at the center of this transformation.
Japan's commitment to carbon neutrality by 2050 is accelerating demand for high-efficiency electrical components. C14500 tellurium copper, with its near-pure-copper conductivity, minimizes energy losses in power transmission components — directly supporting Nagoya's green manufacturing transition.
Toyota's aggressive electrification roadmap is driving unprecedented demand for high-conductivity copper alloys in the Nagoya supply chain. C14500 is increasingly specified for next-generation EV power electronics, motor windings, and charging system components.
The trend toward smaller, more powerful electronic devices demands materials that can be machined to micro-scale tolerances without sacrificing electrical performance. C14500's exceptional machinability makes it the preferred choice for miniaturized connector and terminal manufacturing.
Nagoya's manufacturers are rapidly adopting Industry 4.0 technologies — IoT sensors, smart robotics, and AI-driven production systems. These technologies require reliable, high-performance electrical materials. C14500 tellurium copper's consistency and reliability make it ideal for smart factory applications.
Post-pandemic supply chain disruptions have accelerated the trend toward regional supply chain resilience. Nagoya manufacturers are increasingly seeking reliable, direct-supply partnerships with high-quality copper alloy suppliers — creating opportunities for established exporters with proven quality systems.
Continuous innovation in copper alloy metallurgy is expanding the performance envelope of C14500. New processing techniques — including advanced extrusion, precision drawing, and heat treatment optimization — are delivering improved mechanical properties while maintaining the alloy's signature conductivity.
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.
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.
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.
Four core pillars that make Sichuan Kepai the trusted C14500 Tellurium Copper supplier for Nagoya and global markets.
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. We believe that only by continuously pursuing excellence and creating value can we win the trust of customers and the respect of society.
Our quality credentials and global market presence — verified by international certifications and trusted by industry leaders worldwide.
Advanced manufacturing and quality testing equipment ensuring every batch of C14500 Tellurium Copper meets the highest international standards.
Smelting
Laying-off
Extrusion
Drawing
Straightening
Package
Eddy Current Conductance Instrument
Chemical Composition Test Room
Metallographic Sample Polishing Machine
Microcomputer Controlled Electro-Hydraulic Servo Universal Testing Machine
Liquid Crystal Display Electronic Universal Testing Machine
Hardness Tester
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!
Whether you are sourcing C14500 Tellurium Copper for automotive, aerospace, electronics, or precision manufacturing applications in Nagoya and across Japan — our team is ready to provide expert consultation, competitive pricing, and reliable supply chain solutions tailored to your specific requirements.
Explore Tellurium Copper Products →Discover our complete range of advanced copper alloy materials — engineered for the world's most demanding industrial applications.
