In the current era of rapid technological convergence, the demand for materials that offer high electrical conductivity, superior mechanical strength, and excellent machinability has reached an unprecedented peak. Sichuan Kepai New Materials Co., Ltd. stands at the forefront of this metallurgical revolution, specializing in OFT (Oxygen-Free Tellurium) series copper alloys. These materials are no longer just commodities; they are the critical components enabling the next generation of Electric Vehicles (EVs), 5G telecommunications, and Aerospace systems.
Historically, pure copper offered the highest conductivity but suffered from poor machining properties (stickiness and bird-nesting). Conversely, leaded brasses were easy to machine but offered mediocre conductivity. Our OFT series (Oxygen-Free High Conductivity Tellurium Copper) effectively bridges this gap. By utilizing precision alloying techniques with trace Tellurium in an oxygen-free environment, we provide a material that maintains 90-95% IACS conductivity while achieving a machinability rating of 85% (relative to free-cutting brass).
Specialized for high-current charging pins and connector terminals where thermal management is paramount. OFT alloys prevent overheating during rapid DC charging.
High-purity oxygen-free copper components for vacuum environments, ensuring zero hydrogen embrittlement and maximum signal integrity in lithography tools.
Our proprietary OFT series allows for high-speed automated production with minimal tool wear, significantly reducing the cost-per-part for global manufacturers.
Established in May 2017, Sichuan Kepai New Materials Co., Ltd. is a high-tech private company specializing in the R&D, production, and sales of high-conductivity and high-strength free-cutting tellurium copper and other special copper alloys.
Kepai is committed to the highest global standards. Our products comply with RoHS, REACH, and IATF 16949 automotive quality management systems.
Developing the Next Generation of Non-Ferrous Alloys
We are currently exploring nano-structured copper surfaces to enhance heat dissipation in high-density AI server chips and GPU cooling blocks.
Implementing a "Closed-Loop" recycling system that allows us to reclaim copper scrap with zero degradation in metallurgical purity for the OFT series.
R&D focused on increasing the softening temperature of Beryllium copper and Chromium Zirconium alloys for extreme aerospace environments.
CuNiSiCr precipitation strengthened. High electrical conductivity with outstanding softening resistance.
Ideal for deep drawing and stamping. Perfect balance of mechanical properties and cost-efficiency.
Excellent elastic properties. High resistance to wear and corrosion in marine environments.
Precipitation-hardening with added lead for superior machining in precision industrial fittings.
The "King of Machining." Optimal for high-speed automated lathe operations.
99.99% pure copper for high-vacuum applications and cryogenics.
Leveraging copper's natural antimicrobial properties and precision signal transmission for MRI and surgical tools.
The backbone of EV charging efficiency, provided via high-performance OFT copper connectors.
Generator components and data transmission cables that withstand high G-forces and temperature fluctuations.
The "Oxygen-Free" (OF) aspect is crucial. Traditional tellurium copper contains trace oxygen which can cause hydrogen embrittlement when welded or brazed. Kepai's OFT series is processed in a vacuum environment, ensuring high conductivity and absolute reliability in hydrogen-rich or high-vacuum environments.
We utilize automated continuous casting and real-time spectral analysis to monitor alloy composition. Every batch comes with a detailed Material Test Report (MTR) including conductivity, tensile strength, and hardness data.
Beryllium copper is perfectly safe in its solid finished form. However, we provide strict machining guidelines to ensure that dust and fumes are managed according to international safety standards, making it the highest performance choice for elastic components.
Yes. Beyond standard rods, tubes, and sheets, Kepai specializes in custom extrusion profiles to reduce machining waste for our OEM partners.
Tellurium copper offers slightly better conductivity and thermal resistance, making it ideal for electrical contacts. Sulfur copper provides exceptional free-cutting properties for intricate parts where conductivity requirements are marginally lower.
For standard stock items, we can ship within 7-10 days. Custom alloy melts and specialized extrusions typically range from 4 to 6 weeks depending on volume.
Kepai New Material
