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C17200 Beryllium Copper (also known as Alloy 25 or CuBe2) is the most widely used beryllium copper alloy in the global advanced manufacturing industry. With a beryllium content of approximately 1.8–2.0% and trace additions of cobalt or nickel, C17200 achieves an extraordinary combination of mechanical strength, electrical conductivity, thermal conductivity, and corrosion resistance that no other copper alloy can match. After age-hardening heat treatment, C17200 reaches tensile strengths exceeding 1,400 MPa — comparable to many high-strength steels — while retaining copper's inherent electrical conductivity of up to 22% IACS and thermal conductivity of approximately 105 W/m·K. These properties make it the material of choice for precision machined parts across aerospace, defense, semiconductor, oil & gas, medical devices, and high-frequency electronics industries.
Key Advantage: C17200 Beryllium Copper is the only copper alloy that can be precipitation hardened to steel-level strength while maintaining excellent electrical and thermal conductivity — making it irreplaceable in precision machined components that demand multi-performance simultaneously.
Tensile strength up to 1,400 MPa after age hardening. Hardness reaching HRC 40+, enabling thin-wall and fine-feature precision machining without deformation.
Electrical conductivity 18–22% IACS; thermal conductivity ~105 W/m·K. Ideal for electrical contacts, connectors, and heat-dissipating precision parts.
Outstanding resistance to seawater, industrial chemicals, and oxidizing environments — extending service life in harsh operating conditions significantly.
Machines cleanly in the solution-annealed (soft) state, then age-hardens to full strength — allowing complex geometries and tight tolerances (±0.005 mm).
Retains mechanical properties from cryogenic temperatures (-200°C) up to 200°C continuous service, making it suitable for extreme environment applications.
Non-magnetic properties and non-sparking characteristics make C17200 essential for tools and components used in explosive or magnetically sensitive environments.
| Parameter | Specification / Value | Condition |
|---|---|---|
| Beryllium (Be) Content | 1.80 – 2.00 % | Standard Grade |
| Cobalt + Nickel (Co+Ni) | 0.20 – 0.60 % | Min. Co 0.20% |
| Tensile Strength (UTS) | 1,100 – 1,400 MPa | Age Hardened (AT) |
| Yield Strength (0.2%) | 950 – 1,250 MPa | Age Hardened (AT) |
| Hardness | 36 – 42 HRC | Age Hardened (AT) |
| Electrical Conductivity | 18 – 22 % IACS | Age Hardened |
| Thermal Conductivity | ~105 W/m·K | Room Temperature |
| Elastic Modulus | 128 GPa | — |
| Density | 8.25 g/cm³ | — |
| Operating Temperature | -200°C to +200°C | Continuous Service |
C17200 is extensively used in aerospace for gyroscope housings, inertial navigation system components, radar waveguide parts, and satellite communication connectors. Its combination of high strength-to-weight ratio, dimensional stability under thermal cycling, and non-magnetic properties makes it irreplaceable. Defense applications include firing pin components, non-sparking tools for ammunition handling, and precision actuator parts.
In semiconductor manufacturing, C17200 beryllium copper is the dominant material for IC test sockets, burn-in boards, probe tips, and precision contact springs. The alloy's ability to maintain spring force and electrical contact reliability through millions of cycles — while dissipating heat efficiently — directly impacts chip test yield rates. Leading OSAT companies globally specify C17200 for precision machined test hardware.
Precision machined C17200 beryllium copper components are critical in oil & gas MWD/LWD (measurement/logging while drilling) tools. The alloy's non-magnetic nature prevents interference with directional drilling sensors, while its high strength withstands extreme downhole pressures exceeding 20,000 psi. Precision bushings, sensor housings, and pressure transducer bodies are commonly machined from C17200 rod and bar stock.
Medical device manufacturers rely on precision machined C17200 for surgical instrument components, dental handpiece bearings, MRI-compatible tools (non-magnetic), and implantable device connectors. The alloy's biocompatibility when properly finished, combined with its ability to hold micron-level tolerances, makes it a preferred material for Class II and Class III medical device manufacturing.
The global electric vehicle revolution is driving unprecedented demand for C17200 precision machined electrical contacts, battery management system connectors, and high-current relay components. With charging currents exceeding 500A in fast-charging infrastructure, the combination of C17200's conductivity and fatigue resistance ensures contact integrity over the vehicle's lifetime. This is one of the fastest-growing application segments globally.
5G base station deployment requires precision machined beryllium copper components for RF connectors, waveguide assemblies, antenna feed networks, and filter housings. At millimeter-wave frequencies (24–100 GHz), surface finish and dimensional precision directly affect signal loss. C17200's excellent machinability enables the sub-micron surface finishes required, while its thermal conductivity manages heat generated by high-power RF amplifiers.
Projected global market value by 2030, driven by EV, 5G, and semiconductor industry expansion. CAGR of approximately 6.8% from 2024–2030.
Demand for C17200 precision machined contacts and connectors in new energy vehicles projected to grow 42% by 2027 as global EV adoption accelerates.
5G base stations require 3× more precision RF copper alloy components per site compared to 4G, creating sustained demand for C17200 machined parts.
Advanced semiconductor packaging and medical device trends are pushing precision machining tolerances to ±0.003mm, where C17200's stability is critical.
Global supply chains increasingly require ISO 9001, ASTM B197, and EN 12166 certified C17200 material with full traceability documentation for precision parts.
Recycled beryllium copper content and energy-efficient age-hardening processes are becoming procurement criteria as manufacturers target carbon neutrality goals.
Sichuan Kepai New Material Co., Ltd.
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.
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.
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
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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