Copper C101

Copper C101 in CNC Machining

Copper C101, also known as oxygen-free electronic (OFE) copper, is a high-purity copper alloy with excellent electrical conductivity and thermal conductivity.

It is is 99.9% pure copper. It is the second-best conductor of electricity after silver, which is why it is widely used in electronics. It also has high impact strength, ductility, and corrosion resistance. It’s soft, so it can be machined easily, but its softness also makes it more prone to burrs and deformation during machining. For efficient machining, we machine it with carbide tools at higher cutting speeds and feed rates. We adjust cutting parameters accordingly and optimize toolpaths to minimize tool engagement and reduce cutting forces.

C101 can undergo annealing or solution treatment by heating to 370 – 650°C, followed by rapid cooling. It exhibits excellent soldering and very good brazing properties. However, welding, except for gas-shielded arc welding, is not advisable. Furthermore, it naturally forms a blue-green layer called oxidation/patination over time, which may or may not be wanted. If the patina is desired, it can be speeded up with oxidizing agents. If not, a lacquer coating can be applied for protection.

What is Copper C101?

Copper C101, also known as Oxygen-Free Electronic (OFE) copper, is highly regarded for its exceptional purity, boasting a copper content of 99.99%. This purity contributes to its outstanding electrical conductivity.

C101 stands out as one of the best conductors of electricity, with additional benefits such as efficient heat transfer due to its excellent thermal properties. While it may not be the easiest copper to machine because of its softness, careful machining can produce a smooth finish. The material also exhibits good resistance to atmospheric corrosion. It’s commonly used in electrical components like connectors and conductors, electronic heat sinks, and decorative architectural features.