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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
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High elasticity recovery ability, suitable for precision spring clips
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Excellent anti-stress relaxation performance, stable over a long period
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Strong anti-fatigue performance, suitable for high-frequency usage environments
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Smooth surface, without scratches or oxidation
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Can undergo electroplating processing
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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
Q:
What is the primary chemical composition of this alloy?
This Beryllium Copper alloy is primarily composed of Beryllium (1.8 – 2.0%) and Cobalt + Nickel (≥0.2%), with the remainder being Copper (Cu). Impurities are kept strictly below 0.15%.
Q:
What makes this material suitable for high-frequency switch contacts?
It features high elasticity recovery, excellent anti-fatigue properties, and outstanding resistance to stress relaxation, ensuring stable electrical contact and mechanical performance over long-term high-frequency operations.
Q:
Can this Beryllium Copper alloy undergo surface finishing?
Yes, it has a smooth, scratch-free surface that is highly receptive to electroplating and other surface treatments to enhance conductivity or corrosion resistance.
Q:
What are the typical electrical and thermal conductivity values?
This alloy offers an electrical conductivity of 20 – 28% IACS and a thermal conductivity of approximately 105 W/m·K, making it highly efficient for thermal dissipation and electrical transmission.
Q:
Why is this alloy preferred in aerospace and military applications?
Its combination of non-magnetic properties, extreme fatigue resistance, high yield strength (≥1100 MPa), and high reliability makes it ideal for critical components in radar, satellites, and aerospace connectors.