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In the rapidly evolving landscape of electrical engineering, the foundational materials dictate the absolute limits of technological advancement. Oxygen Free Copper (OFC) with a 99.97% minimum purity represents the pinnacle of industrial metallurgy designed specifically for high-demand electrical components. Unlike standard Electrolytic Tough Pitch (ETP) copper, which contains minute amounts of oxygen that can cause severe structural failures during high-temperature processing, OFC is refined in a strictly controlled, oxygen-free environment. This rigorous vacuum melting and extrusion process eliminates volatile impurities and residual deoxidizers like phosphorus, resulting in a crystalline structure that offers an extraordinary electrical conductivity rating often exceeding 101% IACS (International Annealed Copper Standard).
The significance of the 99.97% purity threshold cannot be overstated. In high-frequency electrical components, even trace amounts of oxygen can lead to hydrogen embrittlement when exposed to reducing atmospheres at elevated temperatures—a common scenario in brazing, welding, and continuous operation of heavy-duty electrical relays. By maintaining oxygen levels below 0.001% (10 ppm), 99.97% OFC ensures absolute mechanical integrity, profound thermal conductivity, and pristine signal transmission capabilities. This makes it the non-negotiable standard for vacuum tubes, semiconductor bases, printed circuit board (PCB) laminates, and critical power transmission networks globally.
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.
The automotive industry's paradigm shift towards electrification has radically transformed the demand profile for high-purity copper. In the architecture of modern Electric Vehicles (EVs), Oxygen Free Copper with 99.97% purity acts as the central nervous system. It is heavily utilized in Battery Management Systems (BMS), high-voltage DC relays, and heavy-duty busbars. When an EV undergoes rapid acceleration or DC fast charging, immense currents surge through the electrical pathways. Standard copper alloys suffer from resistive heating, which not only wastes energy but poses severe thermal runaway risks. 99.97% OFC mitigates this through its ultra-low electrical resistance and superior thermal dissipation properties. Furthermore, the absence of oxygen prevents structural degradation during the ultrasonic welding processes used to attach battery tabs to busbars, ensuring a lifecycle that outlasts the vehicle itself.
As global telecommunications infrastructure upgrades to 5G and prepares for 6G, the physical properties of conductive materials face unprecedented scrutiny. At microwave and millimeter-wave frequencies, the "skin effect" dictates that electrical current travels almost exclusively along the outer surface of a conductor. In standard copper, microscopic oxide inclusions on the surface scatter electrons, leading to signal attenuation, phase noise, and data packet loss. Oxygen Free Copper 99.97% guarantees a flawless, homogeneous micro-structure. When drawn into coaxial cables, waveguides, and cavity filters for 5G base stations, it provides a pristine pathway for high-frequency signals. Additionally, its exceptional thermal conductivity is vital for dissipating the intense heat generated by modern active antenna units (AAUs), maintaining optimal operating temperatures and prolonging equipment lifespan.
In aerospace and defense sectors, electrical components are subjected to extreme environmental stressors, ranging from the vacuum of space to cryogenic temperatures. 99.97% OFC possesses a unique metallurgical trait: it retains its high ductility and avoids brittle fracture even at temperatures approaching absolute zero (e.g., in liquid helium or liquid hydrogen environments). This makes it the indispensable material for superconducting magnetic energy storage (SMES), MRI machine matrices, and satellite communication arrays. Its high purity ensures that there is no outgassing in high-vacuum environments, preventing the contamination of sensitive optical and electronic sensors aboard spacecraft.
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.
The commercial landscape for Oxygen Free Copper 99.97% is experiencing a historic supercycle, driven by the global transition towards decarbonization and smart manufacturing. Industrially, the production of true high-purity OFC is a bottlenecked process. It requires massive capital investment in specialized vacuum induction melting (VIM) furnaces and continuous casting lines that can operate devoid of atmospheric contamination. Consequently, the global supply chain is highly consolidated among top-tier metallurgical firms like Sichuan Kepai New Materials. As nations mandate the phase-out of internal combustion engines and invest trillions in renewable grid infrastructure, the Compound Annual Growth Rate (CAGR) for high-purity copper alloys is outpacing standard industrial metals significantly. Manufacturers of electrical components are now securing long-term contracts to guarantee a stable supply of 99.97% OFC, recognizing that material shortages could stall entire production lines of advanced electronics.
Looking to the future, the evolution of OFC for electrical components is moving towards sophisticated micro-alloying and green manufacturing. While 99.97% purity provides ultimate conductivity, pure copper can be notoriously difficult to machine via CNC, often leading to tool wear and long production cycles. The industry trend is the precise integration of trace elements—such as in High-Conductivity Tellurium Copper (C14500) or Sulfur Copper (C14700). By adding meticulously controlled fractions of tellurium or sulfur to an oxygen-free base, metallurgists create "free-cutting" copper. This innovation retains up to 90-95% of the electrical conductivity of pure OFC while increasing the machinability rating from 20% to 85%.
Furthermore, Artificial Intelligence (AI) and machine learning are revolutionizing the smelting process. Predictive algorithms now monitor the vacuum casting parameters in real-time, adjusting thermal gradients to ensure perfect crystalline alignment and zero porosity. This AI-tech integration guarantees that every batch of 99.97% Oxygen Free Copper meets the microscopic tolerances required by next-generation quantum computers, solid-state EV batteries, and miniaturized IoT sensors.
Smelting
Laying-off
Extrusion
Drawing
Straightening
Package
Eddy Current Conductance Inst.
Chemical Composition Test Room
Metallographic Sample Polisher
Electro-hydraulic Servo Tester
Electronic Universal Tester
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!
