In the rapidly evolving landscape of global industrial manufacturing, the demand for materials that bridge the gap between extreme electrical conductivity and superior machinability has never been higher. Oxygen-Free High Conductivity (OFHC) Tellurium Copper (often categorized under C14500 or specialized OFT grades) represents the pinnacle of copper alloy engineering. At Sichuan Kepai New Materials Co., Ltd., we recognize that traditional pure copper, while conductive, poses significant challenges in high-speed CNC environments due to its "gummy" nature. Our tellurium copper solutions provide a machinability rating of 85%, compared to only 20% for pure copper, without compromising the 93-96% IACS (International Annealed Copper Standard) conductivity required for high-current applications.
As the world pivots toward Electrification (EV) and Renewable Energy Storage, the role of tellurium copper has shifted from a niche component to a macro-critical material. Our C14500 alloys are now the standard for high-speed charging connectors, where thermal management and electrical efficiency are non-negotiable. By utilizing Oxygen-Free Tellurium Copper, engineers can avoid the catastrophic "Hydrogen Embrittlement" often found in oxygen-bearing coppers when exposed to high-temperature brazing or welding processes.
Tellurium copper is increasingly used in 5G base station heat sinks and power semiconductor bases. Its ability to be machined into complex geometries while maintaining high thermal dissipation makes it indispensable for miniaturized electronics.
With the rise of 800V charging architectures, Kepai’s OFT copper provides the durability needed for repeated mating cycles in charging pins and terminal blocks, reducing resistance-induced heat by up to 15%.
Precision is paramount. Our alloys ensure that data transmission parts and generators in aerospace applications operate with zero-fail reliability under extreme atmospheric conditions.
Currently, the global copper alloy market is facing supply chain volatilities. Kepai New Materials addresses this by maintaining a robust "In-Stock" strategy at our 29,000㎡ facility. By controlling the entire R&D and production cycle—from melting and casting to extrusion and cold drawing—we provide our international clients with a hedge against price fluctuations and lead-time delays typical of localized distributors.
We utilize vacuum melting technology to reduce oxygen content to below 10ppm. This ensures that the tellurium particles are uniformly dispersed, providing consistent tool-wear characteristics during CNC machining.
By precisely controlling the Tellurium (Te) content between 0.4% and 0.7%, we optimize the balance between structural integrity and the "short-chip" breaking behavior that defines free-cutting copper.
Our cold-drawing process enhances the tensile strength and hardness (reaching 80-120HB), making it suitable for heavy-load industrial switchgear and plasma cutting electrodes.
Kepai is fully certified under ISO9001:2015, ISO14001:2015, and OHSAS 45001:2018. We understand that global trade requires more than just high-quality metal; it requires compliance assurance. Every shipment of our Tellurium Copper is accompanied by a Mill Test Certificate (MTC) following EN 10204 3.1 standards, ensuring RoHS and REACH compliance for our European and North American partners.
Utilized in MRI components and high-frequency surgical tools where non-magnetic properties and high thermal conductivity are essential for patient safety and device longevity.
Our specialized tellurium copper alloys offer superior resistance to seawater corrosion and bio-fouling, making them ideal for underwater connector housings and sensor probes.
Specifically designed for electrodes and nozzle holders. The high melting point of the copper matrix combined with free-cutting properties allows for longer-lasting consumables in industrial cutting plants.
Looking toward 2030, Kepai is investing in "Smart Material" R&D. We are exploring the integration of trace zirconium and chromium with our tellurium copper to create alloys that can withstand temperatures exceeding 400°C without losing their tempered hardness. This "super-copper" roadmap aims to serve the burgeoning private space exploration sector and ultra-fast hyper-loop electrical systems.
Tellurium provides a higher machinability rating (85) and better resistance to atmospheric corrosion compared to sulfur-copper, while maintaining superior electrical conductivity.
Yes, C14500 is excellent for brazing and soldering. Because our version is oxygen-free, it is not susceptible to hydrogen embrittlement during high-temperature welding.
Absolutely. While we maintain a massive stock of standard rods, bars, and foils, our factory can produce custom profiles and tubes based on your specific engineering drawings.
All materials are ISO 9001 and IATF 16949 certified. We also ensure full compliance with RoHS and REACH regulations for global export.
For "In-Stock" items, we ship within 3-5 business days. Custom production runs typically range from 2-4 weeks depending on the complexity of the alloy.
We use high-precision gas analyzers to ensure oxygen content is consistently below the 10ppm threshold, meeting the strictest OFHC standards.
Contact Kepai New Material today for technical consultation and bulk pricing on our Oxygen-Free High Conductivity Tellurium Copper.
Kepai New Material
