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Copper C101
Material Type
Metal
Material Name
Copper C101
Alternative Names
C10100 | CU OFE | OFHC
Process Compatibility
CNC Milling, CNC Turning
introduction
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.
Properties
Properties Table of Copper C101
| MECHANICAL PROPERTIES | |
|---|---|
| Ultimate Tensile Strength | 220-280 MPa |
| Yield Strength | 60-240 MPa |
| Young's Modulus(Elasticity) | 125-135 GPa |
| Elongation at Break | 9-30% |
| Physical Property | |
| Magnetism | Semi-magnetic |
| Weldability | Poor |
| Thermal Property | |
| Maximum Service Temperature | 77-87°C |
| Thermal Expansion Coefficient | 16.8-17.3 x 10^-6/°C |
| Thermal Conductivity | 390-398 W/(m·°C) |
| Electrical Property | |
| Electrical Resistivity | 1.7-1.74 μΩ*cm |
TECHNOLOGY OVERVIEW
Basic Knowledge of Copper C101
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.
Advantages of Copper C101
- High electrical conductivity
- Good thermal conductivity
- Ductile and malleable
- Corrosion resistance
- Antimicrobial properties
- Ease of joining
- Recyclability
- Aesthetic appeal
Applications of Copper C101
- Electrical connectors
- Conductive springs
- Heat exchangers
- Plumbing fittings
- Electrical cables
- Printed circuit boards (PCBs)
- Architectural roofing
- Musical instruments (brass instruments)
FAQ
Machining Copper C101 Buying FAQ
Copper C101 and C106 are both high-purity coppers, but they differ in their composition. C101, also known as Oxygen-Free Electronic (OFE) copper, has a minimum copper content of 99.99% and very low levels of oxygen. C106, on the other hand, is a sulfur-bearing free-machining copper with a minimum copper content of 99.95%. The presence of sulfur in C106 improves its machinability.
No, copper C101 is not magnetic. It is a non-ferrous metal, meaning it does not have magnetic properties.
Copper C101 does not rust in the same way that iron or steel does. It forms a protective layer of copper oxide on its surface, which gives it a characteristic reddish-brown color (patina). This patina acts as a barrier, preventing further corrosion. While it doesn't rust, copper can undergo other forms of corrosion, such as tarnishing or verdigris formation.
The cost of copper C101 can vary based on factors such as market conditions, availability, and the quantity purchased. Generally, high-purity copper, such as C101, tends to be more expensive than lower-grade copper alloys due to the refining process required to achieve its high purity.
Other Materials
Copper C110
Copper C110, also known as electrolytic tough pitch (ETP) copper, is a commercially pure copper alloy with high thermal and electrical conductivity.
More info about Copper C110
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