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Beryllium Copper 172, industrially recognized as UNS C17200, represents the pinnacle of high-strength copper-based metallurgy. Characterized by its composition of approximately 1.8% to 2.0% beryllium combined with trace elements of cobalt and nickel, C17200 exhibits exceptional response to precipitation age-hardening. In its age-hardened condition (TF00 or TH04), this alloy achieves the highest strength and hardness levels among all commercial copper alloys, rivaling high-tensile alloy steels, while retaining critical copper physical attributes such as high thermal and electrical conductivity, non-sparking properties, and non-magnetic behavior.
For modern design engineers, Beryllium Copper 172 offers an optimal solution to the classic engineering trade-off: high structural yield strength versus high electrical and thermal conductivity. While steel provides structural integrity, it is highly resistive and prone to magnetic interference. Standard pure copper offers superior conductivity but fails under structural load. C17200 operates in the sweet spot of this Venn diagram, offering a ultimate tensile strength (UTS) that can exceed 1400 MPa (200,000 psi) and hardness numbers up to Rockwell C45, while keeping electrical conductivity up to 22-28% IACS (International Annealed Copper Standard).
The performance of C17200 is heavily dictated by its heat treatment. Beryllium Copper 172 is initially solution heat-treated at temperatures near 790°C (1454°F) and rapidly quenched. In this soft, solution-annealed state, it is highly ductile and can be easily formed, bent, stamped, or machined into complex geometries. Following the cold forming or machining processes, the components are subjected to precipitation hardening (aging) at 315°C to 325°C (600°F to 620°F) for two to three hours. This thermal processing prompts the precipitation of beryllium-rich phases within the copper matrix, creating pinpoints that block dislocation movements and dramatically escalate mechanical performance indicators.
| Alloy Temper Designation | Tensile Strength (MPa) | Yield Strength 0.2% Offset (MPa) | Hardness (HRC / HRB) | Elongation (%) | Electrical Conductivity (% IACS) |
|---|---|---|---|---|---|
| C17200 TB00 (A - Solution Annealed) | 410 - 590 | 140 - 240 | 45 - 85 HRB | 35 - 60 | 15 - 18 |
| C17200 TD04 (H - Hard Temper) | 690 - 830 | 520 - 760 | 88 - 103 HRB | 4 - 15 | 15 - 18 |
| C17200 TF00 (AT - Aged from Annealed) | 1140 - 1310 | 960 - 1170 | 36 - 42 HRC | 4 - 10 | 22 - 28 |
| C17200 TH04 (HT - Aged from Hard) | 1310 - 1480 | 1100 - 1310 | 38 - 45 HRC | 2 - 5 | 22 - 28 |
Established in 2017, Sichuan Kepai New Materials Co., Ltd. is a high-tech enterprise integrating research, development, production, and sales. Currently, our factory covers an area of approximately 9,000 square meters, complemented by a modern, fully-equipped corporate office space of about 1,000 square meters. The company primarily engages in the production of strategic emerging new materials targeted under the national industrial development framework, including high-conductivity oxygen-free copper, tellurium copper, silver copper, dispersion copper, and beryllium copper alloys.
Since our establishment, Kepai has adhered to the business philosophy of "innovation-driven development, quality wins the market." We are committed to providing global B2B procurement partners with the highest quality high-end copper alloy materials, promoting industrial upgrading, and implementing sustainable, eco-friendly manufacturing initiatives across international supply chains.
We leverage advanced metallurgical technology and a comprehensive market layout to deliver end-to-end reliability for our global B2B procurement partners.
Our research and development and production team is composed of senior industry experts who keep pace with international cutting-edge technology trends. Through independent R&D and industry-university-research collaborations, Kepai has achieved breakthrough progress in high-performance copper alloys, matching international standards and satisfying strict industrial tolerances.
Our product line is rich and diverse, covering a comprehensive range of solutions from basic materials to high-end customization. We focus on providing high-performance, premium-quality copper products, including oxygen-free copper, tellurium copper, nickel tellurium copper, tin bronze, beryllium copper, lead bronze, sulfur copper, and chromium zirconium copper.
Adhering to the strategy of "rooted in Sichuan, radiating nationwide, and moving towards the world," we have optimized our distribution channels. We maintain long-term cooperative partnerships with internationally renowned enterprises, actively expanding into overseas markets to promote brand influence and reliability on the global stage.
We advocate the corporate spirit of "integrity, innovation, collaboration, and win-win," encouraging employees to explore boldly. We prioritize teamwork and ongoing talent cultivation, striving to create a harmonious, open, and inclusive work atmosphere to earn the trust of customers and society.
The global demand for Beryllium Copper 172 is driven by its irreplaceable role in high-stress, electrical, and thermal applications. Because it possesses unique resistance to wear, stress relaxation, galling, and marine corrosion, heavy industries and high-tech manufacturers depend on C17200 to ensure operational safety and long-term equipment life.
Beryllium Copper 172's wear resistance and high strength make it the default choice for aircraft landing gear bushings, guide pins, and sleeve bearings. In extreme high-load, low-velocity sliding environments, C17200 prevents galling and sizing under high pressures, functioning reliably without constant lubrication.
In deep offshore oil and gas drilling, exploration instruments must resist high mechanical strain, high pressures, and chemical corrosion (such as sour gas H2S and chlorides). The non-magnetic nature of C17200 prevents interference with directional measurement instruments (MWD/LWD), while its high yield strength ensures structural integrity.
With electronic devices miniaturizing, micro-spring pins, pogo pins, and high-density connectors require thin-gauge Beryllium Copper strip (C17200). Its excellent spring characteristics and resistance to stress relaxation at temperatures up to 200°C ensure repeatable, low-resistance connections during milyon-cycle IC testing runs.
As a seasoned supplier, Sichuan Kepai New Materials provides solutions tailored to specific operating challenges across critical industry segments:
The copper alloy industry is undergoing rapid transformations, driven by high-reliability demands from electric vehicle (EV) automotive powertrains, high-power charging networks, and sub-6GHz 5G base stations. Kepai's metallurgical engineers are actively pursuing three critical R&D paths to address emerging performance demands.
By controlling Beryllium distribution and minimizing oxygen, hydrogen, and trace bismuth, Kepai achieves uniform grain sizes in our C17200 profiles. The introduction of optimized micro-additions of cobalt and nickel prevents grain boundary embrittlement and ensures that the finished materials have isotropic mechanical and electrical properties across both longitudinal and transverse directions.
Global regulatory bodies demand strict compliance regarding heavy metals and particulate exposure. Kepai is invested in state-of-the-art particulate capture and closed-loop wet-gas scrubbers within our smelting and casting facilities. This guarantees that workers and the local environment are fully protected from beryllium oxide particulates, making our products fully compliant with the highest global EH&S (Environmental Health & Safety) standards.
A look inside Kepai's state-of-the-art production floor and testing labs, ensuring every batch meets the highest technical criteria.
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
Our commitment to rigorous ISO quality and environmental standards makes Sichuan Kepai a trusted partner in global supply chains.
As a global supplier, Sichuan Kepai understands the intricacies of international B2B logistics, technical documentation, and regional regulatory compliance. We have designed our supply chain infrastructure to eliminate delay risks and ensure smooth domestic and international custom clearance processes.
Our manufacturing and smelting runs adhere to precise industry standards (such as ASTM B194, ASTM B196 for rod/bar, and EN 12163/1652 European standards). Material Test Reports (MTRs) detailing chemical analysis and mechanical verification are provided with every shipment.
We supply materials compliant with the latest EU REACH and RoHS restrictions. Complete documentation and test certificates can be forwarded to your quality compliance team during the order inquiry process.
With convenient proximity to National Highway 108 and key inland ports, we offer multiple freight arrangements, including sea cargo containerization, air express, and domestic rail freight. Our export logistics team coordinates custom documentation for hassle-free entry.
Common inquiries from procurement managers and design engineers regarding Beryllium Copper 172 properties and procurement.
The primary difference lies in the balance between mechanical strength and electrical conductivity. Beryllium Copper 172 contains higher beryllium content (1.8%-2.0%), making it the strongest copper alloy available (tensile strength up to 1400 MPa), but features a lower electrical conductivity (approx. 22-28% IACS). Beryllium Copper 175 and 17510 contain lower beryllium (0.2%-0.7%) and higher cobalt/nickel content, yielding lower strength (up to 800 MPa) but higher electrical conductivity (45-60% IACS).
Yes, in its solid form, C17200 is perfectly safe to use and presents no health risks to users. Beryllium sensitization is only a risk during processes that generate respirable dust or fumes, such as dry grinding, welding, or high-energy EDM machining. With proper coolant systems and industrial exhaust ventilation, processing is safe and compliant.
To achieve high precision, it is recommended to machine C17200 in its solution-annealed (A/TB00) or cold-worked (H/TD04) state, which is relatively soft and easy on tooling. During the subsequent thermal age-hardening process (precipitating at 315°C), the material experiences minimal dimensional change (typically less than 0.2% linear contraction). For micro-precision features, a final finishing or grinding step can be performed after the heat treatment.
We provide Beryllium Copper 172 in various formats, including round bars, hexagonal rods, wire coil, high-precision strips, plates, and customized pre-extruded shapes. Custom dimensional requests can be fulfilled through our on-site extrusion and drawing lines to minimize waste at your facility.
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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!
Kepai