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C107
Copper 107 – Oxygen-Free Silver-Bearing
C10700
Overview
Copper 107 combines the benefits of oxygen-free copper (freedom from hydrogen embrittlement) with a silver addition for enhanced softening resistance at elevated temperatures. With a minimum 99.95% Cu+Ag content and no oxygen, Copper 107 provides premium performance for high-temperature, high-reliability busbar applications requiring both weldability and thermal stability.
Chemical Composition
| Element | Min | Max |
|---|---|---|
| Copper + Silver | 99.95% | — |
| Silver (Ag) | 25 Troy oz/ton | — |
Alloy Designations
UNSC10700
Common NameOxygen-Free with Silver
TypeWrought Copper
Mechanical Properties
Tensile Strength (Annealed)32 ksi (221 MPa)
Yield Strength (Annealed)10 ksi (69 MPa)
Elongation (Annealed)45%
Tensile Strength (½ Hard)42 ksi (290 MPa)
Yield Strength (½ Hard)36 ksi (248 MPa)
Physical Properties
Density8.94 g/cm³ (0.323 lb/in³)
Melting Point (Liquidus)1,083°C (1,981°F)
Electrical Conductivity100% IACS
Thermal Conductivity391 W/m·K
Specific Gravity8.94
Typical Applications
- High-temperature busbar systems
- Vacuum electronics and tube components
- Aerospace electrical systems
- Nuclear and high-reliability installations
- Waveguide components
- Applications requiring brazing in reducing atmospheres
Fabrication & Joining
- Excellent ductility and formability
- Free from hydrogen embrittlement
- Superior brazing and welding characteristics
- Higher softening temperature than C102
- Ideal for applications requiring both OF purity and thermal stability