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C17200 High Elastic Beryllium Copper Foil - Premium Quality from China Suppliers and Factory
Chemical Component
| Element | Content |
| Beryllium (Be) | 1.8 – 2.0 |
| Cobalt + Nickel (Co+Ni) | ≥0.2 |
| Copper (Cu) | Remaining amount |
| Impurities | ≤0.15 |
Mechanical Properties
| Project | Values |
| Tensile strength | 1250 – 1500 MPa |
| Yield strength | ≥1100 MPa |
| Hardness | HV 360 – 430 |
| Elongation | 2 – 8% |
Physical Properties
| Project | Values |
| Density | 8.25 g/cm³ |
| Electrical conductivity | 20 – 28% IACS |
| Thermal conductivity | ≈105 W/m·K |
| Elastic modulus | ≈128 GPa |
Product Features
✔
High elasticity recovery ability, suitable for precision spring clips
✔
Excellent anti-stress relaxation performance, stable over a long period
✔
Strong anti-fatigue performance, suitable for high-frequency usage environments
✔
Smooth surface, without scratches or oxidation
✔
Can undergo electroplating processing
✔
Excellent processing performance
Typical Application Fields
1 Electronics
High-precision connectors, terminals, contact springs
Relays, push-button switches, elastic elements for temperature control switches
RF connectors, high-frequency probes
Battery contact tabs, high-current elastic contacts
2 Aerospace / Military
Non-magnetic connectors, fatigue-resistant and highly reliable spring elements
Satellites, radar high-frequency contact components
3 Precision Machinery / Instruments
Diaphragms, bellows, pressure gauge elastic elements
Sensor elastic bodies, micro-displacement mechanisms
Frequently Asked Questions (FAQ)
What is the primary composition of this Beryllium Copper alloy?
This alloy contains 1.8% to 2.0% Beryllium (Be), a minimum of 0.2% Cobalt and Nickel (Co+Ni), with the remaining balance consisting of high-quality Copper (Cu). Impurities are strictly limited to less than 0.15% to ensure material purity.
What are the key mechanical properties of this material?
The material offers exceptional strength and durability, featuring a tensile strength of 1250 – 1500 MPa, yield strength of ≥1100 MPa, material hardness of HV 360 – 430, and an elongation rate of 2 – 8%.
Why is this alloy highly recommended for high-frequency switch components?
Due to its excellent anti-stress relaxation performance, high elasticity recovery, and outstanding fatigue resistance, it maintains stable mechanical performance over long cycles, making it ideal for high-frequency switches and precision connectors.
Can this Beryllium Copper alloy undergo surface electroplating?
Yes. The alloy has a smooth, scratch-free, and non-oxidized surface structure that is perfectly suited for various electroplating processes to further enhance corrosion resistance or conductivity.
What are the typical thermal and electrical conductivities of this alloy?
It features an electrical conductivity of 20 – 28% IACS and a thermal conductivity of approximately 105 W/m·K, which provides an excellent balance of electrical performance and heat dissipation.