Established in May 2017, Sichuan Kepai New Materials Co., Ltd. has emerged as a global leader in the R&D and manufacturing of high-conductivity, high-strength free-cutting tellurium copper. In an era where electrical efficiency and machining precision are non-negotiable, tellurium copper (TeCu) stands as the pinnacle of copper alloy engineering. Our facility, spanning 29,000 square meters, is dedicated to overcoming the "conductivity vs. machinability" trade-off that has long plagued traditional copper fabrication.
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Tellurium copper, specifically C14500, is engineered by adding trace amounts of tellurium (0.4% - 0.7%) to copper. This creates a microstructure that facilitates "short-chip" formation during high-speed CNC machining, increasing tool life by up to 500% compared to pure copper. However, Kepai’s Oxygen-Free High Conductivity (OFT) Tellurium Copper takes this a step further. By utilizing a vacuum melting process, we reduce oxygen content to minimal levels, ensuring the alloy is immune to hydrogen embrittlement while maintaining an electrical conductivity ≥93% IACS.
High-current charging pins and battery terminals require the high conductivity of tellurium copper to handle 800V+ architectures while allowing for intricate CNC designs.
Used in high-frequency surgical instruments where both electrical performance and biocompatibility (due to antimicrobial properties) are essential.
Ideal for generators and data transmission components where weight, reliability, and heat dissipation are primary engineering constraints.
Kepai is a top-tier supplier for plasma cutting electrodes and holders, offering materials that withstand extreme thermal cycling.
Operating out of Sichuan, Kepai New Materials leverages the regional advantage of abundant clean energy and a robust metallurgical ecosystem. Our efficiency is not just in cost, but in "Time-to-Market."
From raw material smelting to finished precision extrusion, our in-house control reduces lead times by 30% compared to traditional distributed manufacturing.
We provide rapid prototyping for custom alloy compositions, allowing engineers to test specific tellurium ratios for niche industrial applications.
With an established reputation in overseas markets, our logistics network ensures seamless delivery with full transparency and compliance documentation.
Our commitment to quality is validated by international regulatory bodies. We don't just manufacture; we set the standard.
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Pure copper is extremely soft and "gummy," causing it to stick to cutting tools and create long, stringy chips. Tellurium copper contains microscopic particles that act as chip breakers, allowing for higher cutting speeds, better surface finish, and significantly longer tool life.
We utilize specialized vacuum induction furnaces that prevent oxygen from entering the melt. We then use high-purity phosphorus or other deoxidizers where necessary, and conduct rigorous gas analysis to ensure oxygen levels meet OFHC (Oxygen-Free High Conductivity) standards.
Yes, provided it is the Oxygen-Free (OFT) variety. Standard tellurium copper can suffer from hydrogen embrittlement if processed at high temperatures in hydrogen-rich atmospheres. Kepai’s OFT TeCu is specifically designed to resist this phenomenon.
For standard bar and rod stock, we maintain a rolling inventory. For custom OEM profiles or specialized alloys, lead times typically range from 2 to 4 weeks depending on the complexity of the extrusion and testing requirements.
Kepai New Material