Alloy C17510 Beryllium Copper, also known as alloy No. 3 or alloy class 3 cooper, referred as the best spring copper. This alloy offers good strength, high thermal conductivity and hardness characteristics. UNS C17510 copper has high elasticity, wear resistance, fatigue resistance and heat resistance after quenching and tempering. C17510 alloy is heat treatable, easy to weld and excellent corrosion resistance in the atmosphere and seawater
Alloy C17510 Specifications:
C17510 Beryllium Copper can be supplied fully hardened by our processing mill and is available in wrought product forms such as bars, rods, sheets and plates.
- Sheet / Plate / Strip: ASTM B534, SAE J463, SAE J461
- Seamless Pipe / Tube: SAE J463, J461
- Rod/Bar: ASTM B441, ASTM B534
Chemical Composition:
|
Cu |
Be |
Al |
Co |
Si |
Ni |
|
Balance (nominal 97.8%) |
0.2-0.6 |
0.2 max |
0.3 min |
0.2 max |
1.4-2.2 |
Mechanical Properties:
| Density lb/in³ | 0.319 |
| Elastic Modulus(10⁶ psi) | 20 |
| Coefficient of Thermal Expansion (in./in./°F) | 9.8 x10⁶ |
| Thermal Conductivity (btu/ ft.hr.°F) | 140 |
| Melting Temperature °F | 1900-1980 |
| Tensile Strength, ksi | 100-130 |
| Yield Strength, 0.2% offset ksi | 80-100 |
| Elongation | 10-25 |
| Hardness (HR) | 175-195 |
Applications:
BeCu alloy C17510 is typically used in the applications that require high thermal or electric conductivity such as brushes, switches, relays, fasteners, connectors, thermostat spring sheets and other stress parts.