Engineered to exceed strict industry requirements. Explore our primary range of custom-developed special copper alloys.
How the transformation toward smart electrification, ultra-fast telecom networks, and aerospace engineering drives strict demands for high-conductivity materials.
The electric vehicle sector requires high-performance copper alloys to endure extreme thermal loads and high voltage surges. Advanced alloys such as Tellurium Copper (C14500) combine excellent conductivity with high machinability, which is vital for high-speed automated lathe manufacturing of charging connectors, high-voltage pins, and relay contacts.
Next-generation communications run on higher bandwidth and frequencies, demanding minimized signal loss and superior heat dispersion. High-conductivity, oxygen-free copper and high-strength copper alloys supply the thermal pathways and mechanical resilience needed for 5G base station power management modules and RF coaxial line connectors.
Modern high-speed CNC plasma and laser systems subject cutting nozzles to immense local temperatures. The adoption of high-conductivity tellurium copper and chromium-zirconium-copper alloys enables rapid heat extraction, lengthening consumable lifetimes, and reducing production line downtime.
Historically, traditional copper alloys suffered from a trade-off: high strength often meant compromised electrical and thermal conductivity. Today, materials research focusing on sub-micron structures and precise elemental doping has broken these limits. High-purity, oxygen-free coppers blended with specific trace metals (like tellurium, beryllium, or silver) yield optimized physical traits. These advances support industrial automation, subsea cabling systems, aerospace component engineering, and new energy grid storage devices.
Technical standards and delivery benchmarks demanded by multinational manufacturers and quality assurance teams.
For tier-1 suppliers, sourcing high-purity copper is more than just obtaining raw metal. It requires meeting specific chemical purity margins, uniform microstructure distributions, and strict geometric tolerances. Quality assurance departments prioritize these performance benchmarks to guarantee system reliability:
| Alloy Class | Common UNS Alloy Code | Min. Purity / Key Elements | Electrical Conductivity (IACS %) | Key Application Focus |
|---|---|---|---|---|
| Oxygen-Free High Conductivity (OFHC) | C10100 / C10200 | ≥ 99.99% Cu, ≤ 10ppm O2 | ≥ 101% | Superconductors, vacuum electronics, high-vacuum seals |
| Tellurium Copper | C14500 | 0.4 - 0.7% Te, 0.004 - 0.012% P, bal. Cu | ≥ 90 - 93% | EV charging terminals, electrical relays, plasma cutting nozzles |
| Beryllium Copper | C17200 / C17500 | 1.8 - 2.0% Be (High Strength), bal. Cu | 20 - 60% (depends on heat treatment) | Heavy-duty spring contacts, wear plates, aerospace bearings |
| Pure Copper (EP & DHP) | C11000 | ≥ 99.90% Cu | ≥ 100% | General busbars, electrical switchgear, architectural flashing |
| Tin Bronze / Phosphor Bronze | C51900 | 5.5 - 7.0% Sn, 0.03 - 0.35% P, bal. Cu | ≥ 15% | Elastic springs, wear-resistant parts, high-stress bushings |
Beyond alloy grades, global purchasing professionals focus heavily on risk management and consistency. Key priorities include:
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.
Located in the western area of the Sichuan Guanghan Industrial Development Zone, adjacent to National Highway 108, our facility benefits from excellent logistics links. This connection streamlines the transport of raw materials and finished products, enabling rapid, reliable shipping to global ports for our international partners.
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.
We continuously upgrade our manufacturing practices to reduce energy use and carbon output. Through green smelting methods, smart waste recovery, and modern filtration systems, Kepai aligns its operations with global carbon neutrality targets.
Our custom copper alloys are designed to improve system efficiency and extend the working life of high-stress industrial components, helping our clients reduce their total carbon footprint.
How our custom copper alloy portfolio resolves critical challenges in high-demand industrial sectors.
In lithium battery relays and high-voltage energy storage switches, copper alloys must handle sudden high currents without sticking or burning. Our custom dispersion copper and tellurium copper alloys provide the precise balance of wear resistance, conductivity, and arc-erosion resistance required to keep systems running smoothly.
Traditional pure copper is soft and adhesive, making it difficult to machine and leading to rapid tool wear. Our customized sulfur copper and tellurium copper alloys yield tiny, brittle chips during CNC operations. This raises machining efficiency to 85%-90% of free-cutting brass, while preserving excellent electrical conductivity.
Heavy industry, defense, and power grid switches require spring contacts that resist relaxation at high temperatures. Our high-strength beryllium copper (C17200, C17300, C17500) and nickel-silicon-bronze options provide high yield strength and fatigue resistance, preventing performance drops in challenging environments.
Leveraging scientific research, vertical integration, and a global logistics network to deliver superior material performance.
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.
Every stage of production—from smelting to final package—is closely monitored using modern analytical instruments.
Our commitment to quality, environmental safety, and structural integrity is backed by globally recognized regulatory frameworks.
To serve high-tech clients across North America, Europe, and the Asia-Pacific region, Kepai maintains strict compliance with major industry standards. We ensure all materials satisfy RoHS and REACH requirements, preventing the contamination of sensitive downstream systems. Our production processes are verified under quality management systems to guarantee batch-to-batch consistency.
Pioneering development strategies to support the next generation of global technological systems.
We are scaling up the production of alumina dispersion-strengthened copper (ODS). This material embeds nano-scale ceramic particles within the copper matrix, providing exceptional yield strength and wear resistance at temperatures exceeding 800°C without sacrificing high conductivity.
By researching custom combinations of Chromium, Zirconium, and Silver, we aim to design next-generation materials tailored for ultra-high voltage (UHV) power transmission, reducing distribution line losses and improving grid reliability.
Our engineers are refining vacuum-induction smelting processes to eliminate volatile emissions, optimize scrap copper recycling, and reduce carbon intensity per ton of finished alloy.
Answers to common technical queries from procurement managers and metallurgical engineers.
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!
Explore our full line of specialized materials, including high-purity copper, sulfur copper, and beryllium cobalt copper alloys.
Kepai