Selected high-conductivity materials for Japanese precision engineering standards.
Japan remains a global titan in "Monozukuri"—the art of making things with unmatched precision. From the automotive hubs in Aichi Prefecture to the electronics clusters in Tokyo and Osaka, the demand for materials that balance high electrical conductivity with superior machinability has reached an all-time high. Tellurium Copper (C14500) has emerged as the critical enabler for this transition.
In the Japanese market, traditional electrolytic tough pitch (ETP) copper often fails to meet the high-speed CNC machining requirements necessary for complex EV charging connectors and semiconductor testing probes. Tellurium copper, specifically those with oxygen-free characteristics provided by Kepai New Material, provides the "Information Gain" that Japanese engineers seek: the ability to maintain 93% IACS conductivity while achieving a machinability rating of 85% relative to free-cutting brass.
Established in May 2017, Sichuan Kepai New Materials Co., Ltd. is a high-tech private company specializing in R&D, production, and sales of high-conductivity and high-strength free-cutting tellurium copper and other special copper alloys.
Our commitment to the Japanese market is reflected in our adherence to JIS (Japanese Industrial Standards) equivalents and our robust supply chain that ensures rapid delivery to Japan's major industrial ports including Yokohama, Kobe, and Nagoya.
Strategic material advancement for 2025-2030.
Japan is aggressively expanding its EV charging network. Our tellurium copper is the industry standard for CHAdeMO and next-generation fast-charging pins, offering low contact resistance and high heat dissipation.
As Japan reinvests in domestic chip foundries (Rapidus/TSMC Kumamoto), our oxygen-free high-conductivity copper ensures the signal integrity required for high-frequency testing environments.
Compatible with high-end Japanese machine tools (Mazak, Fanuc, Okuma). The specialized chip-breaking properties of C14500 allow for unmanned 24/7 production cycles without tool fouling.
Bridging the gap between material science and Japanese engineering needs.
Utilized in MRI components and diagnostic tools in Osaka's medical tech hub, where non-magnetic properties and conductivity are paramount.
High-current connectors for inverter systems in new energy vehicles, meeting IATF 16949 automotive quality standards.
Precision data transmission parts for aerospace applications, ensuring reliability in extreme thermal cycling environments.
Corrosion-resistant copper alloys for specialized marine sensors and underwater communication hardware.
Standard-setting electrodes for plasma cutting systems, offering 3x the lifespan of conventional ETP copper electrodes.
For our Japanese partners, Kepai provides comprehensive compliance documentation, including RoHS, REACH, and Conflict Minerals Reporting. We understand the stringent quality entry barriers in Japan and provide:
While JIS does not have a direct 1:1 identical grade for C14500 in some older tables, it is widely recognized and used under the ASTM B301 / C14500 specification for Japanese high-end exports.
OFT (Oxygen-Free Tellurium) copper has an oxygen content below 10ppm. This prevents hydrogen embrittlement during heating/brazing, a common failure point in Japanese electronics manufacturing.
Yes, we provide rods, bars, and profiles tailored to the specific collet sizes of Japanese CNC machines (Fanuc, Citizen-Cincom, etc.).
Whether you are based in Nagoya, Tokyo, or Kyushu, get the high-performance materials your project deserves.
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Kepai New Material
