In the contemporary industrial landscape, Oxygen-Free Copper (OFC) sheets have emerged as a cornerstone material for high-vacuum, high-power, and high-frequency applications. As global markets transition toward a greener economy, the demand for ultra-pure copper materials—specifically C10100 (OFHC) and C10200—has seen exponential growth. From the intricate circuitry of 5G telecommunications to the massive power systems in New Energy Vehicles (NEVs), the purity of copper directly dictates the efficiency and reliability of modern electronics.
Market research indicates that the global high-purity copper market is expected to grow at a CAGR of 6.2% over the next decade. This growth is driven by the semiconductor industry's need for materials with minimal gaseous impurities. Oxygen-free copper, produced through electrolytic refining followed by induction melting in a vacuum or protective atmosphere, offers electrical conductivity of 101% IACS or higher, and more importantly, immunity to hydrogen embrittlement—a critical factor for industrial brazing and welding processes.
Major tech hubs in Europe and North America are increasingly sourcing OFC from China due to the maturity of vacuum smelting technology and superior cost-to-performance ratios.
Oxygen-free copper sheets are vital for lithium battery busbars and charging connectors, where thermal conductivity prevents overheating during rapid charge cycles.
High-frequency signal transmission requires the ultra-smooth surface finish and low impurity levels found in high-grade OFHC sheets to minimize skin effect losses.
Established in 2017, Sichuan Kepai New Materials Co., Ltd. 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.
Our focus remains on the R&D of high-conductivity, easy-to-machine, and high-strength copper alloys. These products are mainly applied in high-tech fields such as new energy vehicles, 5G technology, laser cutting, and lithium battery relays.
Technological innovation is our core competitiveness. Our team, composed of senior industry experts, keeps pace with international cutting-edge trends. We have made breakthrough progress in high-performance tellurium copper, lead copper, and sulfur copper.
From basic materials to high-end customization, we offer pure copper, oxygen-free copper, oxygen-free high-conductivity tellurium copper, tin bronze, and chromium zirconium copper. Our products reduce costs while enhancing performance.
Rooted in Sichuan, radiating worldwide. We have established stable customer bases in multiple provinces and formed long-term cooperative relationships with internationally renowned enterprises across the globe.
For global procurement officers, the "China Advantage" in Oxygen-Free Copper production is no longer just about price—it's about supply chain vertical integration. Sichuan Kepai leverages Sichuan’s abundant hydroelectric power resources to maintain a low carbon footprint during the energy-intensive smelting process, meeting the strict ESG requirements of Western enterprises.
Our localized application scenarios include providing custom-dimensioned OFC sheets for massive particle accelerators, vacuum interrupters, and high-purity targets for PVD coating. By utilizing advanced Eddy Current Conductance Instruments and Microcomputer-controlled testing, we ensure that every sheet leaving our facility meets ASTM B170 or EN 13601 standards.
Oxygen-free copper (OFC) is produced by melting copper under a vacuum or a non-oxidizing atmosphere. C10100 (OFHC) typically has an oxygen content of less than 5 ppm (parts per million) and a conductivity of at least 101% IACS, while C10200 has slightly higher limits but remains vastly superior to standard ETP copper.
Under high heat and vacuum, oxygen in standard copper can react with hydrogen to cause "hydrogen embrittlement," leading to structural failure. OFC eliminates this risk, making it essential for vacuum tubes, particle accelerators, and semiconductors.
We utilize a multi-stage process involving electrolytic refining, vacuum induction smelting, and real-time chemical composition testing in our state-of-the-art laboratory. Every batch is certified for conductivity, grain size, and purity.
Yes. As a custom manufacturer, we specialize in non-standard thicknesses, widths, and surface treatments (such as silver or tin plating) to meet specific engineering requirements for busbars, heat sinks, and industrial electrodes.
Consult with our engineering team today for technical data sheets and competitive quotes on custom oxygen-free copper solutions.
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