In the realm of advanced metallurgy, Oxygen-Free Tellurium Copper (OFTC) represents the pinnacle of conductive materials. While standard Tellurium Copper (C14500) has long been the industry standard for high-speed machining and electrical conductivity, the "Oxygen-Free" variant adds a layer of reliability essential for high-temperature and vacuum environments.
Established in May 2017, Sichuan Kepai New Materials Co., Ltd. has pioneered the research and development of these specialized alloys. Our mission is to solve the historical trade-off between electrical conductivity and mechanical machinability. By maintaining oxygen levels below 10ppm, our OFTC prevents hydrogen embrittlement, making it indispensable for high-voltage EV charging connectors and plasma cutting components.
Unlike standard tough-pitch copper, our oxygen-free tellurium copper is produced in a controlled atmosphere. This eliminates cuprous oxide at the grain boundaries, ensuring that the material remains structural integrity during brazing or welding in hydrogen atmospheres.
Tellurium acts as a natural chip breaker. Our alloys achieve a machinability rating of 85% compared to free-cutting brass, significantly reducing tool wear and increasing production throughput for precision CNC components.
We maintain a precise balance of tellurium (0.4% - 0.7%). This allows us to offer an astounding electrical conductivity of 93-98% IACS, crucial for reducing heat generation in high-current 800V EV architectures.
As a leading Oxygen free tellurium copper Exporter, Sichuan Kepai understands the complexities of international trade. We offer localized support for key markets including Europe, North America, and SE Asia.
With the shift to 800V ultra-fast charging, copper alloys must handle higher thermal loads. Our OFTC is used in charging gun pins and battery terminals to ensure safe, cool operation.
High-reliability connectors in satellite communication systems require the low-outgassing properties of oxygen-free copper combined with the precision fit of tellurium copper.
Copper's natural antimicrobial properties and our alloy's precision allow for high-end MRI components and surgical robotic parts that require non-magnetic, conductive precision.
Miniaturized coaxial connectors and high-frequency wave guides depend on the smooth surface finish achievable only with free-cutting tellurium copper alloys.
Our independent R&D team has developed a new type of highly conductive oxygen-free tellurium copper that outperforms traditional C14500 in extreme conditions.
We participate in the formulation of industry standards, ensuring our materials meet the evolving needs of "Green Manufacturing."
ISO9001:2015, ISO14001:2015, and OHSAS 45001:2018 certified processes ensure every batch is traceable and consistent.
Our environmentally friendly production processes focus on reducing scrap and recycling copper chips to support global ESG goals.
Standard C14500 may contain trace amounts of oxygen. While excellent for many uses, Oxygen-Free Tellurium Copper (OFTC) goes a step further by removing oxygen content to below 10ppm. This prevents hydrogen embrittlement during high-temperature processing, making it safer for welding and aerospace applications.
Kepai offers a complete supply chain advantage: vertical integration from smelting to precision drawing. This allows us to provide more competitive pricing while maintaining 30+ patents and rigorous IATF 16949 automotive standards, which many global traders cannot match.
Yes. We specialize in OEM requirements. Beyond standard rods and sheets, we can produce custom-shaped tubes, hexagonal rods, and specific alloy compositions to meet your engineering specifications.
Depending on the volume and customization, standard stock items ship within 7-10 days. Custom alloy production typically takes 3-4 weeks. We have a robust export department familiar with CIF, FOB, and DDP terms for global markets.
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