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Beryllium Copper Alloy C17200 — also known as BeCu C17200 or Alloy 25 — is the most widely used beryllium copper grade in global industry. Composed of approximately 1.8–2.0% beryllium and trace amounts of cobalt or nickel within a copper matrix, C17200 achieves an exceptional combination of mechanical strength, electrical conductivity, and thermal performance that no other copper alloy can match.
In the age-hardened (precipitation-hardened) condition, C17200 achieves tensile strengths exceeding 1,400 MPa, while maintaining electrical conductivity of 22–28% IACS and thermal conductivity of approximately 105–130 W/m·K. These properties place it in a unique performance category — bridging the gap between structural steels and highly conductive pure copper — making it indispensable in thermal management solutions where both heat transfer and mechanical integrity are non-negotiable.
C17200 delivers tensile strength up to 1,400 MPa alongside thermal conductivity of 105–130 W/m·K — a combination unmatched by any standard copper or aluminum alloy, making it the preferred choice for high-density thermal management components.
Understanding the material properties of C17200 is essential for engineers designing thermal management systems. Below are the critical parameters that define its performance envelope:
These properties are not static — they are highly tunable through controlled heat treatment cycles (solution annealing + age hardening), allowing engineers to tailor C17200's performance to specific thermal management requirements, from maximum conductivity to maximum hardness.
In electric vehicles, battery pack thermal management is a safety-critical function. C17200 is used in battery cell contact springs, bus bar connectors, and thermal interface components where it must simultaneously conduct electricity, transfer heat away from cells, and withstand tens of thousands of compression cycles without fatigue failure. Its spring-back properties and thermal conductivity prevent hotspots that degrade battery life and safety.
As processor TDPs (thermal design power) exceed 300W in AI accelerators and HPC chips, thermal interface materials and heat spreader components made from C17200 are increasingly critical. The alloy's high thermal conductivity combined with its ability to be precision-machined to tolerances below 5 µm makes it ideal for vapor chamber bases, heat spreader frames, and spring-loaded thermal contact assemblies in server infrastructure.
Avionics and defense electronics must operate reliably across extreme temperature ranges (-55°C to +200°C). C17200 beryllium copper is used in thermal management housings, RF connector bodies, and waveguide components where dimensional stability under thermal cycling is essential. Its non-sparking, non-magnetic properties add additional safety advantages in aircraft and naval environments.
Massive MIMO antennas in 5G base stations generate significant heat from power amplifiers operating at millimeter-wave frequencies. C17200 components — including precision-stamped thermal clips, RF shielding cans with integrated heat paths, and spring contacts in antenna arrays — provide the combined electrical performance and thermal dissipation needed to maintain signal integrity and prevent thermal throttling in densely packed radio units.
High-power laser cutting heads and plasma torches require components that can withstand intense localized heat while maintaining precise dimensional tolerances. C17200 nozzles, electrode holders, and thermal management inserts resist deformation at elevated temperatures and offer excellent wear resistance, significantly extending service intervals and reducing downtime in continuous industrial cutting operations.
MRI machines, CT scanners, and X-ray systems incorporate high-voltage switching components and gradient coil connectors that must manage both thermal loads and electromagnetic interference. C17200's non-magnetic nature (critical for MRI environments), combined with its thermal and electrical performance, makes it the material of choice for probe connectors, electrode springs, and thermal management brackets in medical imaging systems.
The global EV market is projected to reach 45 million annual unit sales by 2030. Each EV contains hundreds of C17200 components in battery management systems, motor controllers, and charging infrastructure. As battery energy density increases and fast-charging voltages rise to 800V+, the thermal demands on connector and contact materials intensify, driving premium demand for C17200's unique property profile.
AI training clusters now deploy GPU racks exceeding 100kW per rack. Liquid cooling systems, cold plates, and thermal interface components made from C17200 are replacing aluminum and standard copper in the most thermally demanding zones. The push for higher rack densities in hyperscale data centers is creating a structural growth market for precision C17200 thermal components.
Consumer electronics, wearables, and IoT devices are shrinking while power densities rise. C17200's ability to be formed into ultra-thin foils (down to 0.03mm), fine wires, and complex micro-stamped geometries while retaining spring properties and thermal performance makes it essential for next-generation compact thermal management architectures.
Increased global defense spending and commercial space programs (satellite constellations, lunar missions) are driving demand for high-reliability thermal management materials. C17200's radiation resistance, cryogenic performance, and dimensional stability under extreme thermal cycling make it a strategic material for next-generation defense electronics and spacecraft thermal control systems.
Supply chain strategists increasingly classify beryllium copper C17200 as a critical material — not just a commodity. With beryllium production concentrated in a small number of global sources and demand accelerating across electrification, defense, and AI infrastructure sectors, securing a reliable, quality-certified supply of C17200 is a competitive advantage for manufacturers in thermally intensive industries.
Engineers evaluating thermal management materials often compare C17200 against alternatives including aluminum alloys, standard copper, titanium, and Invar. While each has merits in specific contexts, C17200 consistently outperforms in applications requiring the simultaneous combination of multiple demanding properties:
Sichuan Kepai New Materials supplies C17200 beryllium copper in a comprehensive range of forms to support diverse thermal management design requirements:
All C17200 products are supplied with full material certification including chemical composition analysis, mechanical property test reports, and dimensional inspection records, complying with ASTM B197, ASTM B196, and relevant international standards.
Sichuan Kepai New Materials Co., Ltd., established in 2017, is a high-tech enterprise integrating research and development, production, and sales. 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.
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, dispersion copper, and beryllium copper alloys, while also focusing on the research and development of high-conductivity, easy-to-machine, high-strength copper alloys. Products are applied in high-tech fields such as new energy vehicles, 5G technology, laser cutting, and lithium battery relays.
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.
Kepai's R&D team of senior industry experts drives breakthrough progress in high-performance copper alloys including beryllium copper, tellurium copper, and sulfur copper — with achievements reaching international advanced levels.
Our comprehensive product line covers pure copper, oxygen-free copper, beryllium copper, nickel tellurium copper, tin bronze, lead bronze, sulfur copper, and chromium zirconium copper — from basic materials to high-end custom solutions.
Rooted in Sichuan, radiating nationwide, and moving towards the world — Kepai has established stable customer bases across China and formed long-term partnerships with internationally renowned enterprises.
We advocate the corporate spirit of "integrity, innovation, collaboration, and win-win," fostering a culture of bold exploration and teamwork that drives continuous excellence in copper alloy material innovation.
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
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C14500 Tellurium Copper Alloy — High Performance Thermal
C17200 High Elastic Beryllium Copper Foil — Thermal Interface
High Performance Conductive Tellurium Copper — Thermal Solutions
High Performance Oxygen Free Copper — Thermal Management
Characteristics & Applications of High Performance Tellurium Copper — Thermal
OFT Oxygen Free High Conductivity Tellurium Copper — Thermal
High Performance Lead Copper Bronze — Thermal Management Material
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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