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C10200 Oxygen Free Copper (OFC) is a premium-grade copper material produced by removing virtually all dissolved oxygen during the smelting process, achieving a copper purity of ≥99.95%. With an oxygen content of less than 10 ppm, C10200 delivers exceptional electrical conductivity (minimum 101% IACS), outstanding thermal conductivity, and superior weldability — making it the preferred material for high-performance welding electrodes, plasma cutting nozzles, contact tips, and conductive components across diverse industrial sectors.
C10200 conforms to ASTM B170 and ISO 1337 international standards. Its near-zero oxygen content (≤10 ppm) eliminates the risk of hydrogen embrittlement during welding and high-temperature processing. Unlike electrolytic tough pitch copper (C11000), C10200 undergoes vacuum or inert atmosphere melting, producing a microstructure free of cuprous oxide inclusions — a critical advantage in high-heat welding and plasma environments.
Electrical conductivity: ≥101% IACS | Thermal conductivity: 391 W/m·K | Tensile strength: 220–340 MPa | Density: 8.94 g/cm³ | Melting point: 1083°C | Elongation: ≥35%. These properties position C10200 as an unrivaled conductor in welding gun assemblies, plasma torch bodies, and high-frequency induction systems where both electrical efficiency and thermal management are paramount.
During welding, elevated temperatures cause oxygen in conventional copper to react with hydrogen in the atmosphere, producing water vapor that creates microcracks and voids — a phenomenon called hydrogen embrittlement. C10200's ultra-low oxygen content effectively eliminates this risk, ensuring weld joints maintain structural integrity under thermal cycling, vibration, and mechanical stress in demanding industrial environments.
Plasma cutting nozzles and electrodes operate at temperatures exceeding 20,000°C. C10200's exceptional thermal conductivity (391 W/m·K) enables rapid heat dissipation away from the cutting tip, dramatically extending component service life. Its high electrical conductivity ensures consistent arc stability, reducing spatter, improving cut quality, and lowering energy consumption — a key factor in automated CNC plasma cutting systems.
The global oxygen-free copper market is projected to surpass USD 12 billion by 2028, driven by surging demand from the welding consumables sector, plasma cutting equipment manufacturers, and EV (electric vehicle) battery assembly lines. Asia-Pacific — led by China, South Korea, and Japan — accounts for over 58% of global OFC consumption, with China's welding industry alone consuming tens of thousands of tons annually for electrode tips and cutting nozzles.
The rapid adoption of robotic welding cells and CNC plasma cutting systems has elevated quality requirements for copper consumables. Automated systems demand longer-lasting, dimensionally stable C10200 components that resist deformation under repeated thermal cycling. Smart factories are specifying oxygen-free copper as the default material for all contact tips, nozzles, and bus bars, creating a sustained demand surge across automotive, shipbuilding, and heavy machinery sectors.
Battery pack welding in lithium-ion and solid-state EV batteries requires precision copper electrodes with near-zero contamination. C10200 OFC is the mandated material in laser welding and resistance welding processes for battery tab connections, where even trace oxygen levels can compromise cell performance and long-term reliability. As global EV production targets exceed 40 million units annually by 2030, demand for C10200 welding-grade copper will accelerate dramatically.
The rollout of 5G base station infrastructure requires precision plasma-cut copper waveguides, heat spreaders, and signal connectors. Semiconductor fabrication tools — including plasma etchers and CVD equipment — rely on C10200 OFC for electrode assemblies and chamber components where both electrical purity and thermal management are critical. These emerging applications are expanding the addressable market well beyond traditional heavy manufacturing.
≥101% IACS electrical conductivity ensures minimal resistive heating in welding circuits, maximizing energy transfer efficiency and reducing operational costs in high-duty-cycle welding applications.
Thermal conductivity of 391 W/m·K — among the highest of any engineering metal — ensures plasma cutting tips and welding electrodes rapidly dissipate heat, extending service life and maintaining dimensional accuracy under intense thermal loads.
Ultra-low oxygen content (≤10 ppm) completely eliminates the risk of hydrogen embrittlement during welding, ensuring weld joint integrity and component reliability in hydrogen-rich or reducing atmosphere environments.
C10200's refined grain structure allows precision CNC machining of complex plasma torch nozzle geometries, contact tip threads, and electrode profiles with tight tolerances, supporting high-volume automated manufacturing.
The absence of oxide inclusions provides C10200 with superior resistance to oxidation and corrosion in industrial environments, reducing maintenance frequency and total cost of ownership for plasma cutting systems.
C10200 maintains dimensional stability and surface integrity during repeated heating and cooling cycles, making it ideal for resistance welding electrodes and plasma nozzles that must retain precise geometry over thousands of operational hours.
Modern automotive manufacturing lines deploy thousands of robotic resistance spot welding (RSW) guns. C10200 oxygen-free copper electrodes deliver consistent nugget formation across high-strength steel and aluminum panels. The material's superior thermal conductivity prevents over-heating at the electrode tip, reducing dress frequency from every 500 welds to over 2,000 welds — a 4× improvement in productivity that directly impacts vehicle production throughput.
Shipyards cutting 50–100mm thick steel plates demand plasma torches with copper nozzles capable of sustained operation at extreme current densities. C10200 nozzles outlast standard copper alternatives by 200–350%, dramatically reducing downtime and consumable costs. The material's consistency also improves cut squareness and reduces dross, critical for structural weld joint preparation in hull assembly.
EV battery module assembly requires laser welding of copper and aluminum tabs at speeds exceeding 200mm/s with sub-0.1mm precision. C10200 OFC welding fixtures, backing bars, and heat sinks ensure zero contamination transfer to battery cells while providing the thermal management necessary to prevent heat-induced lithium dendrite formation — a critical quality and safety requirement in gigafactory production environments.
Aerospace structural components welded from titanium, Inconel, and high-strength aluminum alloys require C10200 copper backing bars and chill blocks to control heat input and prevent root oxidation. The material's exceptional thermal uniformity ensures consistent weld penetration and bead geometry, meeting the stringent AWS D1.2 and MIL-STD welding requirements mandated for flight-critical structures.
CNC plasma cutting centers processing structural steel for bridges, construction equipment, and pressure vessels use C10200 electrode holders and torch bodies to maintain arc stability across variable material thicknesses. The material's precise machinability supports the micro-tolerance geometries required for modern high-definition plasma (HDP) cutting systems, which achieve cut tolerances of ±0.5mm on 25mm steel — approaching laser cutting precision at a fraction of the cost.
Induction welding of pipes and tubes uses C10200 hollow copper coils through which high-frequency AC current (100 kHz–400 kHz) and cooling water flow simultaneously. The combination of ultra-high conductivity and excellent brazeability makes C10200 the only viable material for fabricating these complex multi-pass coil geometries, which must withstand millions of thermal cycles without fatigue cracking or joint failure.
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.
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.
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!
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