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C102
Copper 102 – Oxygen-Free (OF)
C10200
Overview
Copper 102 is an oxygen-free high-conductivity copper produced by induction melting under non-oxidizing conditions. With a minimum 99.95% copper content and a maximum of only 10 ppm oxygen, Copper 102 is free from hydrogen embrittlement when heated in reducing atmospheres. This makes it the preferred choice for applications involving brazing, welding, or service in vacuum/reducing environments.
Chemical Composition
| Element | Min | Max |
|---|---|---|
| Copper (Cu) | 99.95% | — |
| Oxygen (O) | — | 0.001% (10 ppm) |
Alloy Designations
UNSC10200
DIN2.0040
BS 2871C103
ENCW008A
ASTMB187, B152, B188
Mechanical Properties
Tensile Strength (½ Hard)42 ksi (290 MPa)
Yield Strength (½ Hard)36 ksi (248 MPa)
Elongation (½ Hard)14%
Rockwell Hardness (½ Hard)40 HRB
Shear Strength26 ksi (179 MPa)
Fatigue Strength13 ksi (90 MPa)
Physical Properties
Density8.94 g/cm³
Melting Point1,083°C (1,981°F)
Electrical Conductivity100% IACS
Thermal Conductivity391 W/m·K
Coefficient of Thermal Expansion17.0 × 10⁻⁶ /K
Modulus of Elasticity117 GPa
Typical Applications
- Vacuum tube and electronic components
- Waveguides and microwave components
- Busbars in reducing atmosphere environments
- Superconductor stabilizers
- HVAC and refrigeration tubing
- Chemical process equipment
- High-reliability electrical connections
Fabrication & Joining
- Excellent ductility for cold forming
- Free from hydrogen embrittlement when heated
- Excellent brazing and welding characteristics
- Not recommended for: coated metal art, spot, seam, or resistance welding
- Superior formability compared to ETP grades