High-conductivity, high-strength OEM copper alloys engineered for aerospace, EV electronics, and automated manufacturing.
In-depth technical whitepaper analyzing structural transformations in electrical conductivity, high-velocity precision machining, and thermal management.
The global industrial architecture is undergoing an unprecedented paradigm shift driven by electromobility, hyper-scale 5G telecommunication grids, and high-frequency automated manufacturing systems. At the core of this engineering revolution lies the modern metallurgy of high-performance copper alloys—specifically OEM Copper Iron, Tellurium Copper (C14500), Beryllium Copper (C17200/C17500), and Chromium Zirconium Copper (C18150). Historically, standard pure copper (C11000 ETP) dominated electrical applications; however, modern design constraints demand a complex balance of microstructural tensile strength, thermal resistance against thermal softening, anti-galling behavior, and exceptional machinability ratings.
Engineered to deliver 85% to 98% IACS (International Annealed Copper Standard), reducing energy dissipation, voltage drops, and resistive heating in high-amperage EV relays, busbars, and distribution switches.
By integrating tellurium, sulfur, or controlled micro-alloying elements, chip breakability is drastically optimized, raising machinability index from 20% (pure copper) to over 85%-100%, quadrupling tooling lifespans.
Maintains high yield strength and dimensional tolerance under elevated operating temperatures up to 400°C-500°C, crucial for plasma cutting nozzles, spot welding electrodes, and continuous casting molds.
OEM Copper Iron and strategic copper matrix alloys represent an imperative core material for global Tier-1 industrial buyers. As a designated national high-tech manufacturer included in key technological advancement frameworks, Sichuan Kepai New Material Co., Ltd. specializes in advanced induction smelting, oxygen-free continuous casting, precision cold drawing, and microstructural phase stabilization to deliver mill-grade consistency.
Comparative physical, mechanical, and thermal properties of Kepai’s high-performance copper alloy series.
| Alloy Grade & Name | UNS Designation | Electrical Conductivity (% IACS) | Tensile Strength (MPa) | Machinability Rating (%) | Key Industrial Applications |
|---|---|---|---|---|---|
| Tellurium Copper | C14500 / C14510 | 85% - 93% | 350 - 480 | 85% - 90% | EV charging connectors, Plasma cutting nozzles, Switches |
| Oxygen-Free Tellurium (OFT) | C14500 (OFT Grade) | 93% - 98% | 380 - 500 | 85% - 90% | High-vacuum electronics, Hydrogen fuel cell relays, 5G RF |
| Beryllium Copper (High Strength) | C17200 / C17300 | 22% - 28% | 1100 - 1400 | 50% - 60% (C17300) | Aerospace bushings, Non-sparking tools, Precision springs |
| Beryllium Cobalt Copper | C17500 | 45% - 60% | 700 - 900 | 40% - 50% | Resistance welding electrodes, Die casting plungers |
| Sulfur Copper | C14700 | 90% - 96% | 320 - 450 | 85% - 95% | Automated screw machine parts, Electrical fasteners |
| Chromium Zirconium Copper | C18150 | 80% - 85% | 500 - 650 | 30% - 40% | Spot welding electrodes, Continuous casting molds, Power grids |
| Oxygen-Free Pure Copper | C10200 / C11000 | 100% - 102% | 220 - 350 | 20% | Busbars, High-power transformers, Semiconductor substrates |
How Kepai's OEM copper alloys drive efficiency and reliability across critical global industrial sectors.
Extensively deployed in high-voltage charging plugs, DC fast-charging guns, lithium-battery high-voltage relays, and power distribution units (PDUs). Tellurium copper ensures minimal arc degradation and superior plug insertion longevity.
High-frequency RF coaxial connectors, micro-switches, and wave-guides requiring precise geometric fidelity. Oxygen-Free High Conductive Tellurium Copper prevents signal loss and distortion under extreme environmental stress.
High-precision thermal torch nozzles, cutting tips, and electrode holders. High thermal conductivity prevents molten slag adhesion while preserving clean cutting orifices over thousands of duty cycles.
Beryllium copper (C17200/C17300) delivers ultra-high tensile strength up to 1400 MPa with non-magnetic and non-sparking safety attributes, widely applied in heavy aviation bearings, actuators, and marine sonar hardware.
Leading Chinese High-Tech Enterprise Pioneer in Special Copper Alloy R&D, Smelting, and Global Export.
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.
Sichuan Kepai leverages end-to-end metallurgical control, academic partnerships, and international supply chain agility.
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.
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. 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.
Rigorous international compliance guaranteeing ISO, RoHS, REACH, and metallurgical performance standards.
Advanced vacuum melting, continuous extrusion, cold drawing, and computerized laboratory inspection instruments.
Smelting Furnace
Laying-off Line
Extrusion Press
Precision Drawing
Straightening Line
Automated Packaging
Eddy Current Conductance Meter
Chemical Composition Test Room
Metallographic Polisher
Electro-Hydraulic Testing Machine
Electronic Universal Tester
Hardness Tester
Addressing key technical inquiries regarding OEM Copper Iron procurement, alloy selection, and manufacturing protocols.
Advanced beryllium copper, pure copper, sulfur copper, and high-purity oxygen-free materials ready for worldwide distribution.
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
