Copper C10100

Copper C10100, known as Oxygen-Free Electronic (OFE), is the pinnacle of high-purity copper, refined to 99.99% purity with virtually zero oxygen or volatile impurities. It offers the highest possible electrical and thermal conductivity (minimum 101% IACS), making it indispensable for critical electronic, semiconductor, and vacuum applications. Jucheng Precision specializes in the complex CNC machining of C10100, overcoming its inherent "gummy" nature with specialized sharp diamond tooling and advanced cooling strategies. Whether you require micro-milled heat sinks or high-precision electrical contacts, our ISO 9001 certified facility ensures your OFE copper parts are delivered with mirror finishes and total dimensional integrity.

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Copper C10100

C10100 Machining Capabilities

Capability Technical Description Jucheng Advantage
Micro-Channel Milling C10100 is ideal for thermal management. We utilize 5-axis CNC machines to mill micro-channels (down to 0.3mm width) for liquid cooling plates. Our high-speed spindles ensure burr-free edges and smooth channel walls, maximizing thermal transfer efficiency for semiconductor cooling.
High-Precision Turning Turning small-diameter electrical pins and connectors with tolerances of +/- 0.005mm. We utilize specialized diamond tooling to achieve mirror-like surface finishes (Ra 0.2μm) directly off the machine, critical for electrical contact integrity.
Contamination-Free Machining Processing electronic grade copper in a strictly controlled environment to prevent carbon or ferrous contamination. Jucheng uses dedicated tooling and high-purity synthetic coolants to ensure the 99.99% purity of C10100 is maintained throughout the process.
Secondary Surface Finishing In-house capabilities for Silver Plating, Gold Plating, and Electroless Nickel Plating. Provides a one-stop solution to enhance solderability and prevent oxidation on critical electronic components.

Fabrication Guidelines for C10100 Copper

Handling Material Gummyness:
C10100 is extremely pure and “gummy.” Standard tools will push the metal rather than cut it. Tip: We use ultra-sharp carbide tools with high positive rake angles to shear the material cleanly and prevent deformation.

Thermal Conductivity Challenges:
Heat dissipates into the entire part instantly during machining. Tip: We utilize high-pressure through-spindle coolant to keep the part temperature stable, ensuring dimensional accuracy across the entire production run.

Zero Built-Up Edge (BUE):
Pure copper tends to weld itself to the tool edge. Tip: Highly polished tool flutes and specialized lubrication are mandatory to prevent BUE, which ruins surface finish and tolerance.

Workholding Sensitivity:
Being soft, C10100 can be easily marked by vice jaws. Tip: We use custom-machined soft jaws or vacuum fixtures to hold thin copper plates without leaving surface indentations.

Primary Applications

High-End Audio Components
Vacuum tube bases, high-purity terminals, and audio cable connectors where 101% IACS conductivity is essential for signal purity.

Semiconductor & Electronics
Wafer handling tools, micro-channel cold plates, and CPU heat sinks for high-performance computing.

Medical & Laboratory
Components for MRI machines and particle accelerators requiring non-magnetic properties and absolute material purity.

Aerospace Avionics
Heat exchangers and power distribution blocks for satellite and flight control systems operating in extreme environments.

Properties

Density 8.94 g/cm³
Tensile Strength 220 - 340 MPa
Yield Strength 69 - 280 MPa
Hardness 40 - 85 HB (Brinell)
Elongation at Break 35 - 55%
Thermal Conductivity 391 W/m-K
Electrical Conductivity 101% IACS
Melting Point 1083 °C
Machinability Rating 20%
Purity Level 99.99% Cu
Max Part Size 2000 x 800 x 600 mm