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C17200 Beryllium Copper — also widely known as Alloy 25 or UNS C17200 — is the most extensively used beryllium copper alloy in the world. Composed of approximately 1.8–2.0% beryllium and small additions of cobalt or nickel, this alloy delivers a remarkable combination of mechanical strength, electrical conductivity, and thermal management performance that no other copper alloy can match.
In the context of modern thermal management solutions, C17200 Beryllium Copper has emerged as a critical engineering material. As electronic devices shrink while power densities soar — from 5G base stations to EV battery modules and AI server farms — the demand for materials that can simultaneously conduct heat efficiently, endure mechanical stress, and maintain dimensional stability under thermal cycling has never been greater. C17200 answers this call with a thermal conductivity of approximately 105–130 W/m·K, combined with tensile strengths exceeding 1,400 MPa in peak-aged condition, making it uniquely suited for precision heat sinks, thermal interface components, and high-cycle spring contacts in power electronics.
105–130 W/m·K — enabling rapid heat transfer away from critical components, far exceeding most structural copper alloys and specialty steels used in thermal assemblies.
22–28% IACS — balancing high electrical performance with exceptional mechanical properties, ideal for components that must carry current while managing heat simultaneously.
Up to 1,400 MPa (peak-aged, AT condition) — the highest strength of any copper-based alloy, allowing thinner, lighter thermal management components without sacrificing structural integrity.
Rockwell C 36–42 (HRC) in aged condition — outstanding fatigue resistance enables reliable performance in high-cycle thermal interface applications such as spring contacts and heat clamps.
Excellent resistance to corrosion, oxidation, and stress relaxation at elevated temperatures — critical for long-term reliability in industrial thermal management environments.
In solution-annealed (A) condition, C17200 offers excellent cold-forming capability, enabling complex thermal management geometries — fins, channels, spring clips — before final age hardening.
5G base stations and mmWave antenna modules generate intense, localized heat. C17200 Beryllium Copper is used for precision heat spreaders, RF shielding frames, and spring-loaded thermal contacts that maintain consistent thermal pathways under vibration and thermal cycling — critical for network uptime and signal integrity.
In EV battery management systems and onboard chargers, C17200 components serve as busbar spring contacts, thermal interface clips, and cell interconnect springs. Its combination of high thermal conductivity and fatigue resistance ensures stable cell-to-cell thermal management across hundreds of thousands of charge cycles — directly impacting battery longevity and safety.
Modern GPU and CPU packages in AI training clusters dissipate hundreds of watts. C17200 Beryllium Copper is machined into precision heat sink bases, vapor chamber base plates, and chip-to-heatsink retention springs — leveraging its high thermal conductivity and dimensional stability to maintain sub-millikelvin thermal resistance uniformity across server lifetimes.
Avionics and radar systems demand thermal management materials that perform reliably from -55°C to +200°C. C17200 Beryllium Copper's non-magnetic properties, combined with its high-temperature strength retention and thermal conductivity, make it the preferred material for thermal management housings, EMI shields, and connector spring systems in mission-critical aerospace applications.
High-power laser cutting heads and medical imaging equipment (MRI coil assemblies, CT detector arrays) require precision thermal management. C17200 components are used in laser nozzle cooling blocks and detector thermal stabilizers — where its tight dimensional tolerances, corrosion resistance, and thermal conductivity ensure micron-level precision under continuous thermal load.
In IGBT modules, solid-state relays, and high-frequency power converters, C17200 Beryllium Copper spring contacts and thermal clips provide both electrical connectivity and heat extraction simultaneously. Its stress-relaxation resistance at elevated temperatures (up to 150°C continuous) ensures contact force stability — preventing thermal runaway in high-power switching applications.
As chip architectures advance to 3nm and below, power densities in processors are projected to exceed 1,000 W/cm² by 2027. This creates an urgent need for thermal interface materials with the highest possible conductivity in the smallest possible form factor — precisely where C17200 Beryllium Copper excels over conventional copper-tungsten or aluminum alternatives.
Global EV production is forecast to exceed 40 million units annually by 2030. Increasingly stringent battery thermal management requirements — driven by safety standards such as UN 38.3 and GB/T 31485 — are pushing OEMs toward higher-performance thermal interface materials, accelerating adoption of C17200 in BMS spring contacts and cell-level thermal management components.
The global AI data center market is expected to surpass $500 billion by 2030, with thermal management representing one of the largest operational cost centers. Hyperscalers and colocation providers are increasingly specifying C17200 Beryllium Copper for precision thermal components in liquid-cooled server racks and direct-to-chip cooling modules — driving significant volume growth in the beryllium copper supply chain.
Defense electronics modernization programs worldwide — including next-generation radar, electronic warfare systems, and satellite payloads — specify beryllium copper for thermal management components due to its unique combination of non-magnetic behavior, high thermal conductivity, and radiation resistance. This segment is projected to grow at 7–9% CAGR through 2030.
Emerging powder-bed fusion and directed energy deposition techniques are beginning to enable complex C17200 thermal management geometries — internal cooling channels, lattice heat sinks — that were previously impossible to machine. This trend is expected to unlock new application segments in aerospace and medical thermal management over the next five years.
As ESG requirements intensify, manufacturers are under pressure to extend product lifetimes and reduce material waste. C17200 Beryllium Copper's exceptional fatigue life — often exceeding 10 million cycles in spring contact applications — and full recyclability align well with circular economy goals, supporting its long-term competitiveness against alternative thermal management materials.
Sichuan Kepai New Materials Co., Ltd., established in 2017, is a high-tech enterprise integrating research and development, production, and sales. Currently, the factory covers an area of approximately 9,000 square meters, with an office space of about 1,000 square meters. The company primarily engages in the production of strategic emerging new materials for the national 13th Five-Year Plan, including special copper alloys such as tellurium copper, high-conductivity oxygen-free copper, silver copper, and dispersion copper, while also focusing on the research and development of high-conductivity, easy-to-machine, high-strength copper alloys. The products are mainly applied in high-tech fields such as new energy vehicles, 5G technology, laser cutting, and lithium battery relays.
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.
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.
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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
Looking ahead, Sichuan Kepai New Materials Co., Ltd. will continue to uphold its original intention, with even greater enthusiasm and determination, to engage in research and application in the field of new materials, contributing to the development of the new copper alloy materials industry in China and globally. We look forward to working hand in hand with friends from all walks of life to create a brilliant future together!
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