Oxygen-Free High Conductivity (OFHC) Copper grades C10100 and C10200 are ultra-high-purity copper materials produced in oxygen-free environments.
With copper content ≥ 99.95% and extremely low oxygen levels (≤ 0.001%), these grades offer superior electrical, thermal, and metallurgical performance compared to standard ETP copper.
Chemical Composition
| Element | Typical Value |
|---|---|
| Copper (Cu) | ≥ 99.95% |
| Oxygen (O) | ≤ 0.001% |
| Impurities | Trace, tightly controlled |
Electrical & Thermal Properties
| Property | Typical Value |
|---|---|
| Electrical Conductivity | Up to 101% IACS |
| Electrical Resistivity | ~1.7 µΩ·cm (20 °C) |
| Thermal Conductivity | ~380 – 391 W/m·K |
| Density | ~8.94 g/cm³ |
Mechanical & Physical Traits
✔ High ductility and malleability
✔ Excellent corrosion resistance
✔ Superior weldability and solderability
✔ Stable FCC crystal structure
Why Oxygen-Free Matters
Oxygen in copper forms copper oxides that reduce conductivity, increase corrosion, and cause hydrogen embrittlement during welding or heating.
OFHC copper eliminates these risks, making it far more reliable in high-temperature, vacuum, and precision electrical applications.
Applications
Electrical & Electronics
Power conductors, busbars, motor windings, coaxial cables,
telecommunication systems
Industrial & Vacuum
Vacuum tubes, glass-to-metal seals, microwave components,
heat sinks
Automotive & Aerospace
EV electrical systems, aerospace wiring, sensors,
critical connectors
Medical & Scientific
Medical imaging equipment, semiconductor manufacturing,
precision instrumentation
Energy & Renewables
Solar and wind power electrical systems,
high-efficiency power converters
Advantages of OFHC Copper
✔ Superior electrical efficiency
✔ Excellent thermal management
✔ Outstanding workability and formability
✔ Long service life with minimal aging
✔ Reliable in vacuum and high-frequency environments
Comparison
| Feature | C10200 OF Copper | ETP Copper (C11000) |
|---|---|---|
| Purity | ≥ 99.95% | ~99.9% |
| Oxygen Content | Very Low | Higher |
| Electrical Conductivity | ~101% IACS | ~100% IACS |
| Vacuum Suitability | Excellent | Limited |
| Cost | Higher | Lower |
Why Choose OFHC Copper – C10100 / C10200?
Choose OFHC copper when your application demands maximum electrical efficiency, excellent thermal performance, long-term reliability, and superior behavior in demanding environments.