Explore our leading grades of certified Tellurium Copper, Beryllium Copper, and high-performance brass alloys.
In modern electrical engineering and high-precision machining, the conflict between high electrical conductivity and excellent machinability has historically presented a major obstacle. Pure copper (such as ETP or OFHC) offers outstanding conductivity but is notoriously difficult to machine due to its gummy nature, resulting in excessive tool wear and poor surface finishes.
Tellurium Copper (UNS C14500) resolves this challenge. By alloying copper with a precise amount of tellurium (typically 0.4% to 0.7%), materials scientists introduce fine copper telluride (Cu2Te) dispersoids throughout the matrix. These particles act as highly effective chip breakers, boosting the material's machinability rating to 85% (relative to Free-Cutting Brass at 100%).
Crucially, this modification is achieved with minimal impact on electrical performance. C14500 retains up to 93% to 98% IACS (International Annealed Copper Standard) conductivity. This combination of machinability, high electrical conductivity, and thermal transfer efficiency makes Tellurium Copper the material of choice for components demanding tight tolerances and high electrical performance.
Established in 2017, Sichuan Kepai New Materials Co., Ltd. is a high-tech enterprise integrating research and development, production, and sales. We are dedicated to delivering advanced copper alloy solutions globally.
Square meters of state-of-the-art production facilities in Guanghan, Sichuan.
Years of sustained growth, innovation, and technological breakthroughs.
Square meters dedicated to metallurgical research and testing.
Why global OEMs and distributors choose Sichuan Kepai for high-performance copper alloys.
By combining advanced vacuum melting technologies with strict trace-element control, we achieve an ultra-low oxygen environment (< 10 ppm). This eliminates the risk of hydrogen embrittlement during subsequent welding, brazing, or high-temperature processing.
Located adjacent to major transit corridors in the Sichuan Guanghan Industrial Development Zone, we offer streamlined logistics to shipping ports. This strategic positioning guarantees stable lead times and reliable global delivery schedules.
Our manufacturing processes align with international standards, including RoHS and REACH regulations. We provide certified lead-free alternative copper alloys, ensuring seamless compliance across strict export markets.
From aerospace components to power transmission, our engineered materials serve critical roles in modern infrastructure.
High-voltage charging connectors, battery terminals, and power distribution units rely on C14500 for low heat generation under high currents. Excellent machining properties enable the fast production of complex, reliable pin profiles.
Plasma cutting nozzles and gas tips require high thermal conductivity to dissipate intense localized heat quickly, preventing nozzle deformation and ensuring a stable arc.
High-frequency coaxial connectors and electrical contact pins utilize C14500 for signal integrity, electrical performance, and resistance to corrosion and wear over extended duty cycles.
For decades, Lead Brass (such as C36000) was the global standard for high-machinability copper alloy components. However, global health and environmental regulations continue to tighten lead content restrictions.
Sichuan Kepai provides compliant C14500 Tellurium Copper as a direct replacement. C14500 delivers comparable high-speed machining performance while eliminating the hazards of lead contamination. This switch protects tooling investments, maintains component conductivity, and guarantees compliance with future regulatory frameworks.
Complete control over casting, extrusion, drawing, and precision analysis to ensure consistent physical properties.
We maintain a rigorous quality management system to support global compliance and supply chain reliability.
Get detailed technical answers straight from our engineering team regarding specifications, machining parameters, and trade conditions.
Select from our range of beryllium, tellurium, zirconium, and leaded alloys developed for harsh operating conditions.
Partner with Sichuan Kepai for reliable supply chain logistics, direct factory pricing, and rigorous testing validation on tellurium, beryllium, and oxygen-free copper grades.
Kepai
