An authoritative analysis of metallurgical attributes, processing microstructures, and performance vectors driving aerospace, 5G electronics, and electric vehicle architectures.
In modern high-reliability design, materials engineering is constantly pushed to its limit. C17200 Beryllium Copper Foil (commercially recognized as Alloy 25) stands as the ultimate copper-based alloy system capable of matching the tensile properties of high-strength steels while retaining excellent thermal and electrical conductivities. Industrial sourcing demands for thin-gauge C17200 foils have surged globally, directly linked to the rapid miniaturization of electronic components, spring contacts, RF connectors, and shielding elements.
By definition, C17200 consists of approximately 1.8% to 2.0% Beryllium (Be), along with fractional additions of Cobalt (Co) and Nickel (Ni) acting as grain refiners. Through controlled precipitation hardening (age hardening), the alloy achieves a remarkable transformation. It transitions from a ductile alpha-phase solid solution in its annealed temper into an extremely hard structural layout containing gamma-prime precipitates. This unique microstructural metamorphosis enables tensile strengths exceeding 1400 MPa, an elastic limit that outperforms standard bronzes, and superior stress relaxation resistance at elevated temperatures.
| Physical & Mechanical Properties | Annealed (TB00) Condition | Peak Aged (TF00) Condition | Cold Rolled / Hard (TD04) | ||||
|---|---|---|---|---|---|---|---|
| Tensile Strength (MPa) | 410 – 550 | 1170 – 1450 | 690 – 830 | Yield Strength (Offset 0.2%, MPa) | 140 – 240 | 960 – 1240 | 590 – 760 |
| Elongation in 2 inches (%) | 35% – 60% | 3% – 10% | 2% – 10% | ||||
| Electrical Conductivity (% IACS) | 15% – 19% | 22% – 28% | 15% – 19% | ||||
| Elastic Modulus (GPa) | 125 | 131 | 128 |
For global design engineers and procurement teams, sourcing from a competent Wholesale C17200 Beryllium Copper Foil Supplier ensures that key mechanical tolerances are maintained. Consistency in thickness uniformity, surface finish, flatness, and grain size distribution translates directly into high yields during stamping, deep drawing, and laser welding operations.
Empowering Global Industries with High-Performance, Strategically Innovative Copper Alloys
Established in 2017, Sichuan Kepai New Materials Co., Ltd. is a premier high-tech enterprise integrating research, development, precision production, and global sales of advanced copper materials. Spanning a state-of-the-art facility of 9,000 square meters paired with a dedicated 1,000 square meter R&D and office hub, our operational footprint is designed for heavy-duty, high-precision industrial output.
Our specialized manufacturing focus centers on strategic emerging copper alloys, aligned with the national long-term planning frameworks for advanced materials. From Tellurium Copper (renowned for machinability), high-conductivity oxygen-free copper, to advanced Beryllium Copper variants, Kepai delivers performance-critical solutions. Our alloys are widely integrated into next-generation systems: new energy vehicles (EVs), 5G telecommunication infrastructures, precision laser cutting heads, and lithium-ion battery relays.
Located in the western area of the Sichuan Guanghan Industrial Development Zone adjacent to National Highway 108, Kepai leverages superior supply chains, modern logistics corridors, and localized manufacturing efficiencies to ensure swift, dependable delivery to international markets.
Why leading global manufacturers consolidate their supply chains with specialized Chinese producers like Sichuan Kepai.
Our Guanghan facility controls the entire lifecycle of the alloy: vacuum induction smelting, homogenization, cold rolling, precision slitting, and computerized age-hardening. This reduces process variations and ensures consistent quality.
Beryllium handling requires meticulous dust capture and filtration setups. Our factory utilizes high-efficiency air scrubbers and closed-loop filtration, exceeding environmental standards to guarantee safe, sustainable production.
Positioned near key transport hubs with a stable raw material matrix, we pass efficiency gains directly to clients, reducing global procurement budgets without compromising high-end purity and mechanical integrity.
Integrating R&D, advanced manufacturing equipment, and strict quality control systems.
Technological innovation is the core competitiveness of Sichuan Kepai New Materials Co., Ltd. Our research and development team, composed of senior industry metallurgical experts, keeps pace with international cutting-edge technology trends. Through independent research and industry-university collaboration, Kepai has achieved breakthroughs in high-performance Tellurium Copper, Lead Copper, Sulfur Copper, and Beryllium Copper alloys. Many of our technical achievements have reached international advanced standards, ensuring long-term reliability in energy storage, plasma cutting, relays, and new energy vehicles.
Kepai's product line covers high-performance solutions from basic materials to bespoke, high-end customizations. We focus on providing customers with premium alloy systems, including oxygen-free high-conductivity tellurium copper, nickel tellurium copper, tin bronze, beryllium copper, chromium zirconium copper, and sulfur copper. These high-performance alloys are designed to reduce machining costs, improve electrical efficiency, and extend product lifespan under severe environmental conditions.
Rooted in Sichuan, radiating nationwide, and moving towards the world, Kepai has built long-term partnerships with leading international enterprises. We focus on a corporate culture of integrity, innovation, and win-win collaboration. We are committed to pushing the boundaries of material sciences, ensuring that our manufacturing methods remain sustainable and energy-efficient for the global market.
Key macroeconomic trends shaping the supply chain of high-performance Beryllium Copper.
Electric vehicle battery management systems (BMS) and power relays require high current handling with zero structural failures. C17200 foils provide the necessary fatigue limit for spring terminals exposed to continuous mechanical vibration and temperature spikes.
Higher frequencies require ultra-small shieldings and spring contacts. Ultra-thin foils (down to 0.05mm and below) with consistent elastic recovery properties are critical to maintain continuous connectivity in dense electronics.
Global buyers prioritize ISO-9001 certified companies, RoHS compliance data, and chemical analysis certificates. Sichuan Kepai guarantees traceabilities with detailed testing documentation for every production batch.
Every production run is validated through advanced industrial testing to guarantee reliable material performance.
Smelting
Laying-off
Extrusion
Drawing
Straightening
Package
Eddy Current Conductance Instrument
Chemical Composition Test Room
Metallographic Polishing Machine
Microcomputer Controlled Electro-Hydraulic Servo Universal Testing Machine
Liquid Crystal Display Electronic Universal Testing Machine
Hardness Tester
Deploying advanced metallurgical configurations across high-reliability sectors.
Utilized for bellows, diaphragms, and micro-switches in gas control loops and aerospace pressure transducers where high fatigue cycles are mandatory.
Ideal for smart connectors, high-speed backplane pins, and battery terminals that undergo continuous plugging operations without signal loss.
Ultra-thin foils are stamped into shielding gaskets for 5G mobile transceivers, blocking high-frequency electromagnetic interference.
Get answers to critical technical and commercial questions regarding C17200 Beryllium Copper Foil sourcing.
Partner with Sichuan Kepai New Materials for stable lead times, competitive pricing, and rigorous testing validation on all custom alloy orders.
Kepai
