Explore our top-tier precision-engineered alloys, featuring high conductivity, durability, and customized metallurgical properties designed for demanding industries.
In the rapidly evolving landscape of advanced metallurgy, copper-nickel (Cu-Ni) and high-performance copper alloys serve as the backbone for critical industrial infrastructures. Renowned for their unparalleled resistance to marine biofouling, exceptional thermal conductivity, and structural integrity under cryogenic and high-temperature environments, copper nickel systems are highly sought after by engineering teams worldwide. From deep-sea thermal conversion plants to modern electric vehicle (EV) charging busbars and relay components, finding a reliable and high-capacity copper nickel supplier is fundamental to securing supply chain resilience.
The integration of element refinements, such as beryllium in C17510 (copper-nickel-beryllium) or tellurium in C14500, bridges the traditional trade-off between mechanical tensile strength and electrical conductivity. Traditional structural steels fail to conduct electricity, while pure elemental copper deforms easily under stress. Modern copper-nickel-beryllium and related precision formulations present a precipitation-hardened matrix that stands up to severe fatigue, elevated operating currents, and corrosive atmospheres. For engineering applications requiring heavy-duty performance, selecting an advanced manufacturer equipped with internal testing and smelting capabilities is critical.
The true performance of a copper-nickel alloy is determined by its metallurgical phase distribution. In alloys like C17510 (Cu-Ni-Be), nickel and beryllium form fine intermetallic precipitates during heat treatment. This process, known as age hardening or precipitation strengthening, locks the dislocation movement within the copper FCC lattice, significantly increasing yield strength without blocking the conductive pathways. This explains why C17510 remains the material of choice for high-voltage relays in green vehicles and heavy industrial switches where high continuous currents generate massive thermal cycles.
Simultaneously, alloys like Tellurium Copper (C14500) and sulfur-bearing coppers (C14700) address the manufacturing bottlenecks of precision machining. While pure copper is notoriously gummy to machine, causing extreme tool wear and long cycles, the intentional addition of trace elements like tellurium creates microscopic chip-breaker sites. This improves free-machining ratings up to 85% relative to free-cutting brass, while retaining over 90% IACS conductivity. By mastering these microalloying techniques, next-generation copper manufacturers deliver solutions that simultaneously reduce CNC fabrication costs and optimize component efficiency.
Balanced alloying paths targeting up to 98% IACS conductivity for new-energy high-voltage distribution networks.
Advanced nickel and chromium barrier stabilization to minimize surface oxidation under extreme thermal stress.
Oxygen-free melting and vacuum induction systems ensuring minimal impurities and highly homogeneous microstructures.
Technological innovation is the core competitiveness of Sichuan Kepai New Materials Co., Ltd. The company has a research and development and production team composed of senior industry experts who keep pace with international cutting-edge technology trends and continuously explore the unknown boundaries in the field of new copper alloy materials.
Through a combination of independent research and development and industry-university-research collaboration, Kepai has made breakthrough progress in several areas, including high-performance tellurium copper, lead copper, and sulfur copper. Many of its technological achievements have reached international advanced levels and have been successfully applied in various industries such as new energy vehicles, precision machining parts, plasma cutting, relays, and energy storage, earning widespread recognition and praise in the market.
Kepai's product line is rich and diverse, covering a comprehensive range of solutions from basic materials to high-end customization. We focus on providing customers with high-performance, high-quality high-end copper alloy products, including but not limited to pure copper, oxygen-free copper, oxygen-free high-conductivity tellurium copper, nickel tellurium copper, tin bronze, beryllium copper, lead bronze, sulfur copper, and chromium zirconium copper.
These products play an important role in reducing production costs and enhancing product performance due to their excellent physical and chemical properties and environmental friendliness, creating significant economic and social benefits for customers.
In the face of global market competition, Sichuan Kepai New Materials adheres to the development strategy of "rooted in Sichuan, radiating nationwide, and moving towards the world." By continuously optimizing market layout and improving the sales network, we have established a stable customer base in multiple provinces and cities across the country and have formed long-term cooperative relationships with several internationally renowned enterprises.
At the same time, the company actively expands into overseas markets, participates in international competition and cooperation, and strives to promote Kepai's brand influence on the global stage.
We understand that the long-term development of an enterprise is inseparable from an excellent corporate culture. We advocate the corporate spirit of "integrity, innovation, collaboration, and win-win," encouraging employees to explore boldly and innovate courageously, while also emphasizing teamwork and talent cultivation, striving to create a harmonious, open, and inclusive work atmosphere.
We believe that only by continuously pursuing excellence and creating value can we win the trust of customers and the respect of society.
The modern industrial paradigm requires custom metallurgical parameters matching distinct system challenges. For example, in New Energy Vehicles (NEVs), high-voltage battery connection modules and high-speed relays face extreme transient thermal surges during rapid charging. Utilizing alloys like C17510 allows automakers to construct thinner, lighter contact pins that carry larger currents without overheating. The high mechanical resistance of the copper-nickel-beryllium alloy prevents stress relaxation, keeping the contact pressure constant over hundreds of thousands of cycles.
In the Telecommunications & 5G Infrastructure sector, coaxial connectors, filter elements, and heat dissipation bases rely on the precise thermal management provided by oxygen-free high-conductivity tellurium copper. Meanwhile, the marine and shipbuilding sectors demand high-grade copper-nickel alloys (such as C70600 / CuNi 90/10) to combat the relentless shear stress of coastal waters, biofouling attachment, and erosion-corrosion. Sichuan Kepai New Materials provides the comprehensive raw feedstock and engineered customized alloys needed to address these unique, high-value vertical challenges.
Our adherence to international ISO guidelines, rigorous internal testing procedures, and environmental compliance ensures each batch of copper alloy achieves peak mechanical standards.
Advanced production plants require strict metallurgical processing, precise drawing steps, and micro-hardness verification to guarantee absolute component uniformity.
Smelting
laying-off
extrusion
drawing
straightening
package
eddy current conductance instrument
Chemical composition test room
Metallographic sample polishing machine
Microcomputer controlled electro-hydraulic servo universal testing machine
Liquid crystal display electronic universal testing machine
Hardness tester
The company is located in the western area of the Sichuan Guanghan Industrial Development Zone, adjacent to National Highway 108, boasting a superior geographical location and convenient transportation, which lays a solid foundation for the rapid development of the enterprise. Since its establishment, Kepai has adhered to the business philosophy of "innovation-driven development, quality wins the market," committed to providing customers with the highest quality high-end copper alloy materials, and promoting industrial upgrading and sustainable development.
In the modern manufacturing landscape, sustainable sourcing is no longer secondary—it is a central requirement. The metallurgical processing of copper-nickel and specialized alloys requires highly efficient thermal cycles. By optimizing smelting profiles and recycling run-offs, Sichuan Kepai reduces carbon footprint impact per metric ton of alloy produced. This efficiency aligns with international environmental rules, ensuring our components are qualified for supply chains prioritizing low carbon intensity.
Consult with our structural design and metallurgical engineering team today to customize chemical composition, hardness values, and dimensions.
Find expert technical answers regarding copper-nickel performance characteristics, manufacturing processes, and customization ranges.
C17510 offers an optimal combination of electrical conductivity (typically 45-60% IACS) and high mechanical strength (tensile strength up to 800 MPa). By integrating small amounts of nickel and beryllium into the copper matrix, the material forms precipitation-hardened phases. This makes it ideal for high-current relays, connectors, resistance welding electrodes, and mechanical springs operating under thermal stress.
Standard pure copper is highly ductile, which makes high-speed machining difficult and causes tool gumming. C14500 Tellurium Copper features a free-machining rating of 85% compared to free-cutting brass, while retaining over 90% of pure copper's electrical conductivity. This significantly reduces manufacturing costs for precision CNC-turned electric contact pins, gas nozzles, and connectors.
Copper-nickel alloys possess natural antimicrobial properties that prevent marine organisms (such as barnacles and algae) from adhering to their surfaces. Additionally, the nickel content promotes the rapid formation of a thin, protective oxide surface film when exposed to seawater. This self-healing film protects the piping system against erosion, cavitation, and stress corrosion cracking.
Yes. With a 9,000 square meter factory equipped with smelting, extrusion, drawing, and straightening machines, Kepai supports high-end customization. We can supply materials in various tempers (soft annealed, hard-drawn, or age-hardened) in form-factors including rods, plates, wires, and profiles customized to specific customer requirements.
Premium performance alloys designed for high mechanical machining efficiency, electrical relays, and long-term industrial service.
Kepai