Explore our precision-engineered copper and copper alloy products tailored for demanding industrial applications.
Established in May 2017, Sichuan Kepai New Materials Co., Ltd. is a high-tech private enterprise specializing in the research, development, production, and sales of high-conductivity, high-strength free-cutting tellurium copper, oxygen-free copper, and other advanced copper alloys.
Operating from our modern 29,000 square meter manufacturing facility, we integrate advanced vacuum melting, continuous casting, and precision drawing technologies. Our commitment to metallurgical innovation allows us to deliver high-purity oxygen-free copper that meets the stringent requirements of semiconductor processing, aerospace engineering, and high-frequency telecommunications.
With over 30 national patents and certifications including ISO9001:2015, ISO14001:2015, and ISO45001:2018, Kepai stands as a reliable global partner for high-performance copper materials.
A comprehensive guide to metallurgical standards, performance characteristics, and industrial applications.
Oxygen-Free High Conductivity (OFHC) copper, designated as C10100 and C10200, represents the pinnacle of pure copper metallurgy. Unlike standard electrolytic tough pitch (ETP) copper, which contains significant amounts of oxygen in the form of cuprous oxide (Cu2O), oxygen-free copper is refined through a rigorous vacuum induction melting (VIM) process that reduces oxygen levels to less than 10 ppm (0.001%).
This extreme level of purity is not merely a nominal specification; it fundamentally alters the physical and mechanical behavior of the metal. The absence of cuprous oxide inclusions eliminates the risk of hydrogen embrittlement when the material is exposed to reducing atmospheres at elevated temperatures. Consequently, high-purity oxygen-free copper exhibits superior ductility, higher electrical and thermal conductivity, and exceptional vacuum integrity, making it the material of choice for ultra-high vacuum (UHV) systems, particle accelerators, and high-end audio-visual transmission lines.
Key Insight: The ASTM B170 standard defines two grades of oxygen-free copper: Grade 1 (OFE) with 99.99% minimum purity and less than 5 ppm oxygen, and Grade 2 (OF) with 99.95% minimum purity. Sichuan Kepai specializes in the OEM supply of Grade 1 C10100 OFE copper, ensuring maximum performance in critical applications.
Understanding the precise physical properties of C10100 is essential for design engineers working on high-frequency electronics and cryogenic systems. The table below outlines the standard mechanical and electrical parameters of our high-purity oxygen-free copper products.
| Property | C10100 (OFE) Standard Value | C10200 (OF) Standard Value | Impact on Industrial Performance |
|---|---|---|---|
| Copper Purity (Min) | 99.99% | 99.95% | Minimizes signal attenuation and electrical resistance. |
| Oxygen Content | < 5 ppm (0.0005%) | < 10 ppm (0.001%) | Prevents hydrogen embrittlement during brazing and welding. |
| Electrical Conductivity | 101% - 102% IACS | 100% IACS | Optimizes energy efficiency in high-current applications. |
| Thermal Conductivity | 391 W/m·K (at 20°C) | 383 W/m·K (at 20°C) | Ensures rapid heat dissipation in semiconductor substrates. |
| Residual Impurities | < 40 ppm total (Pb, As, Sb, Bi, Se, Te) | < 100 ppm total | Guarantees stable performance under ultra-high vacuum. |
The global demand for high-purity oxygen-free copper is experiencing unprecedented growth, driven by the rapid expansion of the electric vehicle (EV) market, the rollout of 5G telecommunications infrastructure, and the scaling of semiconductor fabrication facilities. Procurement officers in multinational corporations are increasingly prioritizing supply chain resilience, material traceability, and consistent metallurgical quality.
As a leading OEM supplier, Sichuan Kepai addresses these market dynamics by offering vertically integrated manufacturing solutions. From raw material sourcing to final precision machining, we maintain a strict chain of custody. This ensures that every batch of C10100 copper is accompanied by comprehensive chemical analysis reports, mechanical test certificates, and compliance documentation (RoHS, REACH, and Conflict Minerals regulations), mitigating risk for our global procurement partners.
Where high-purity oxygen-free copper meets cutting-edge engineering across diverse sectors.
High-purity copper is essential for EV busbars, high-voltage connectors, and traction motor windings, where maximum electrical conductivity directly translates to extended vehicle range and faster charging capabilities.
Utilized in high-frequency radar systems, satellite communication transceivers, and rocket engine components where thermal stability and resistance to extreme environmental conditions are non-negotiable.
Critical for MRI machines, CT scanners, and medical imaging systems that rely on highly stable superconducting magnets and ultra-pure conductive pathways to generate precise diagnostic data.
Our specialized copper alloys offer exceptional resistance to marine biofouling and seawater corrosion, making them ideal for subsea cabling, offshore energy systems, and marine instrumentation.
As semiconductor nodes shrink below 2nm and power electronics transition to wide-bandgap materials like Silicon Carbide (SiC) and Gallium Nitride (GaN), the thermal and electrical demands on packaging materials have escalated. The metallurgical roadmap for the next decade focuses on two primary vectors: grain structure optimization and ultra-low impurity thresholds.
Sichuan Kepai is actively investing in research to control the grain orientation of C10100 copper during the continuous casting phase. By producing single-crystal or highly oriented large-grain copper structures, we can reduce electron scattering at grain boundaries, pushing the electrical conductivity beyond the theoretical 102% IACS limit. Additionally, our R&D team is developing next-generation lead-free, free-cutting copper alloys to comply with upcoming environmental regulations while maintaining excellent machinability.
Operating in a globalized economy requires more than just manufacturing excellence; it demands absolute compliance with international standards and localized technical support. Sichuan Kepai has established a robust global logistics and technical service network to support our clients in North America, Europe, and the Asia-Pacific region.
All our high-purity oxygen-free copper products are fully compliant with the EU RoHS Directive (2011/65/EU) and its subsequent amendments, as well as REACH regulations. We implement strict environmental management systems certified to ISO14001, ensuring that our manufacturing processes minimize carbon footprint and waste generation. For high-precision applications, our engineering team provides localized design-in support, helping clients select the optimal alloy temper, grain size, and surface finish for their specific manufacturing processes.
Expert answers to common technical and procurement inquiries regarding oxygen-free copper.
Discover our broader range of high-conductivity and high-strength special copper alloys.
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