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Uncovering the precise engineering parameters that make C14500 the ultimate standard for high-speed machining and electrical conductivity.
Pure copper (such as C11000) possesses remarkable electrical conductivity, but its soft, gummy nature during machining poses massive industrial challenges, leading to accelerated tool wear, severe burring, and poor surface finishes. By introducing a precise concentration of tellurium (0.4% to 0.7%) under strictly monitored thermal environments, we achieve the perfect combination: C14500 Tellurium Copper.
This micro-alloying process produces fine telluride dispersions throughout the copper matrix. These dispersions act as natural chip breakers during CNC milling and turning, increasing the machinability rating from a low 20% (for pure copper) to an exceptional 85% (relative to Free-Cutting Brass C36000). At the same time, the material retains over 93% IACS (International Annealed Copper Standard) electrical conductivity and outstanding thermal transfer characteristics.
"By integrating advanced degassing and continuous casting technologies, Sichuan Kepai eliminates oxygen contaminants, preventing hydrogen embrittlement during subsequent brazing or welding processes."
| Property Spec | C14500 Tellurium Copper | C11000 ETP Copper | C17200 Beryllium Copper |
|---|---|---|---|
| Chemical Composition | Cu: 99.5%, Te: 0.5%, P: 0.008% | Cu: 99.90% Min | Be: 1.8-2.0%, Co+Ni: 0.2% Min |
| Machinability Index | 85% (Very High) | 20% (Poor/Gummy) | 20% (Difficult) |
| Elec. Conductivity (% IACS) | 93% - 98% | 101% | 22% - 28% |
| Tensile Strength (MPa) | 250 - 380 (Depending on temper) | 220 - 340 | 1100 - 1300 (Aged) |
| Thermal Conductivity (W/m·K) | 355 | 388 | 105 - 130 |
| Hydrogen Embrittlement | Immune (Phosphorus Deoxidized) | Susceptible | Immune |
How macroeconomic trends, green energy transitions, and precision component demand are reshaping the global market for Tellurium Copper C14500.
The rapid transition to Electric Vehicles (EVs) has triggered unprecedented demand for high-performance copper alloys. Battery charging systems, contactors, and high-voltage distribution terminals operate under extreme currents, requiring low electrical contact resistance. Tellurium copper's thermal dissipating properties prevent runaway heating, while its ease of machining enables high-speed manufacturing of intricate pins and connectors.
5G high-frequency networks require high-precision RF connectors, coaxial switches, and complex waveguide components. High signal fidelity demands minimal surface oxidation and geometric accuracy. Tellurium copper C14500 allows manufacturers to machine high-precision components with minimal burring, ensuring long-term signal integrity and low attenuation across high-frequency bands.
Laser and plasma cutting nozzles operate under intense heat. The nozzle material must conduct heat away from the cutting tip instantly to prevent melting. Tellurium copper's thermal conductivity combined with its excellent hot workability makes it the material of choice for high-precision cutting nozzles, extending consumable lifespan and reducing downtime for industrial cutting systems.
How Sichuan Kepai New Material Co., Ltd. combines advanced manufacturing automation with strict testing protocols to guarantee consistent premium copper alloys.
Modern supply chains require reliable quality and strict dimensional tolerances. To meet these demands, Sichuan Kepai's 9,000 square meter facility in the Guanghan Industrial Development Zone integrates advanced Industry 4.0 manufacturing processes.
Our automated continuous casting and extrusion lines minimize manual intervention, reducing metallurgical grain size variations and eliminating internal micro-voids. Every batch of C14500 Tellurium Copper undergoes online eddy current testing and optical emission spectrometry (OES) to verify tellurium distribution and phosphorus deoxidization levels.
This process controls trace impurities (such as lead, iron, and bismuth) to keep them within strict metallurgical limits, ensuring our copper alloys offer consistent performance in high-speed stamping, turning, and electrical conduction applications.
A comprehensive look at our research capabilities, product systems, global market layout, and dedicated team.
At Sichuan Kepai, we work closely with academic and research institutions to develop customized, high-performance copper alloys. Our team is focused on resolving challenging material property trade-offs, such as maintaining high electrical conductivity in high-strength, easy-to-machine alloys.
Whether you require specific mechanical tempers (half-hard, hard, extra-hard), precise wire and rod diameters, or custom hollow profiles, our engineering team works directly with your procurement department to deliver the exact specifications your manufacturing lines demand.
Our product portfolio includes special copper alloys like tellurium copper, high-conductivity oxygen-free copper, silver copper, dispersion copper, and beryllium copper, serving customers in over 30 countries.
Our R&D and production teams include industry experts who keep pace with international cutting-edge technology trends. Through independent research and industry-university-research collaboration, Kepai has made breakthrough progress in several areas, including high-performance tellurium copper, lead copper, and sulfur copper.
We provide a comprehensive range of solutions, from basic materials to high-end customization. We focus on high-performance, high-quality copper alloy products, including pure copper, oxygen-free copper, oxygen-free high-conductivity tellurium copper, nickel tellurium copper, tin bronze, beryllium copper, and chromium zirconium copper.
Adhering to our development strategy of "rooted in Sichuan, radiating nationwide, and moving towards the world," we actively expand into overseas markets. We participate in international competition and cooperation to promote Kepai's brand presence on the global stage.
We advocate the corporate spirit of "integrity, innovation, collaboration, and win-win." We emphasize teamwork and talent cultivation to create a collaborative and inclusive work atmosphere, striving to continuously build value for our customers.
Our integrated production line from smelting to physical property testing guarantees stable, high-performance alloy products.
Our manufacturing facilities comply with international environmental and quality system benchmarks, including ISO and RoHS standards.
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