C101 Oxygen-Free Copper

C101 is a high-purity Oxygen-Free Electronic (OFE) copper, typically containing more than 99.99% copper. It offers extremely high electrical and thermal conductivity together with excellent ductility. Compared with C110, C101 has lower oxygen content and higher purity, making it particularly suitable for high-end electronics, vacuum systems, and precision components requiring superior conductivity and material purity.

Appearance & Properties

Color: Reddish copper to reddish-brown

Density: Approx. 8.94 g/cm³

Electrical Conductivity: Excellent, typically ≥101% IACS

Thermal Conductivity: Excellent

Corrosion Resistance: Good

Machinability: Moderate to difficult

Weldability: Excellent

Ductility: Excellent

Magnetism: Non-magnetic

Surface Finishes: Polishing, nickel plating, tin plating, silver plating, passivation, etc.

Typical Applications

C101 Oxygen-Free Copper is widely used in semiconductors, electronics, electrical power, vacuum equipment, new energy systems, scientific instruments, and high-end electrical equipment.

Typical parts include high-conductivity terminals, electrodes, busbars, vacuum-system components, connectors, electrical contacts, heat-dissipation components, and high-purity precision CNC copper parts.

Advantages

• Extremely high electrical and thermal conductivity

• High copper purity and very low oxygen content

• Excellent ductility and formability

• Suitable for vacuum and high-cleanliness applications

• Ideal for high-performance electrical and electronic components

Limitations

• Relatively low strength and hardness

• Tendency to adhere to cutting tools during CNC machining

• Generally more expensive than C110

• Less cost-effective when ultra-high purity is not required