Imagine electrons flowing effortlessly like vehicles on a superhighway in the microscopic world. C110 oxygen-free copper serves as the ideal material to construct this electronic thoroughfare. With its exceptional purity and superior performance, it has become the material of choice for applications demanding rigorous electrical and thermal conductivity requirements. This article explores the properties, applications, and critical role of C110 oxygen-free copper in contemporary technology.
Overview of C110 Oxygen-Free Copper
C110 oxygen-free copper, also known as OFE (Oxygen-Free Electronic) copper, is a high-purity copper alloy containing over 99.99% copper. This extraordinary purity grants it outstanding electrical and thermal conductivity, along with excellent workability and corrosion resistance. Compared to standard copper materials, C110 implements stricter impurity controls to prevent performance degradation.
Key Properties of C110 Oxygen-Free Copper
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High Purity:
With copper content exceeding 99.99%, minimal impurities ensure optimal performance.
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Exceptional Electrical Conductivity:
The high purity results in lower resistance, enabling efficient power transmission with reduced energy loss.
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Superior Thermal Conductivity:
The material rapidly and effectively transfers heat, making it ideal for thermal management applications.
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Excellent Workability:
Demonstrates good ductility and malleability for both cold and hot working processes, allowing fabrication into various components.
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Hydrogen Embrittlement Resistance:
Maintains reliability in high-temperature environments by resisting hydrogen embrittlement.
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Low Volatility:
Minimal outgassing in vacuum environments makes it suitable for vacuum electronic devices.
Chemical Composition
The primary component of C110 oxygen-free copper is copper, constituting at least 99.99% of the material. Strict limits on other elements preserve its high purity and performance characteristics:
|
Element
|
Content
|
|
Copper (Cu)
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99.99% min
|
|
Oxygen (O)
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0.001% max (10 ppm)
|
|
Other Impurities
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0.01% max total
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Physical Properties
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Property
|
Value
|
|
Density
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8.94 g/cm³
|
|
Melting Point
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1083 °C
|
|
Thermal Expansion Coefficient
|
17.0 x 10⁻⁶ /°C (20-300°C)
|
|
Thermal Conductivity
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401 W/m·K
|
|
Electrical Resistivity
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1.7241 x 10⁻⁸ Ω·m
|
|
Elastic Modulus
|
117 GPa
|
Industry Standards
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ASTM B170: Standard Specification for Oxygen-Free Electrolytic Copper—Refinery Shapes
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ASTM B152: Standard Specification for Copper Sheet, Strip, Plate, and Rolled Bar
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EN 13604: Copper and copper alloys - Product for electrical purposes
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JIS H3100: Copper and copper alloy sheets, plates and strips
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BS EN 12420: Copper and copper alloys - Forgings
Applications
The exceptional properties of C110 oxygen-free copper enable diverse applications across multiple industries:
Electronics
Critical for manufacturing high-performance electronic components including integrated circuit lead frames, connectors, cables, and printed circuit boards.
Vacuum Electronics
Its low volatility and hydrogen embrittlement resistance make it valuable for vacuum tubes, microwave tubes, and X-ray tubes.
Superconducting Magnets
Serves as stabilizer material in superconducting magnets to protect superconductors from excessive current and heat.
Glass-to-Metal Seals
The material's compatibility with glass makes it ideal for hermetic sealing applications.
High-Vacuum Equipment
Used in vacuum chambers, piping, and valves due to its minimal outgassing properties.
Thermal Management
Its superior thermal conductivity enables efficient heat sinks for electronic components.
Medical Technology
Biocompatibility and corrosion resistance suit it for implantable medical devices and surgical instruments.
Manufacturing
Widely used as electrodes in electrical discharge machining (EDM) due to its conductive and erosion-resistant properties.
Audio Equipment
Enhances signal transmission quality in premium audio cables and connectors.
Semiconductor Fabrication
Employed in sputtering targets and etching equipment for its purity and corrosion resistance.
Fabrication Methods
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Cold Working:
Suitable for cold rolling, drawing, and forging operations.
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Hot Working:
Adaptable to hot rolling, forging, and extrusion processes.
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Machining:
Easily processed through turning, milling, drilling, and grinding.
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Joining:
Compatible with brazing, resistance welding, and laser welding techniques.
Future Prospects
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Enhanced Purity:
Advancements in manufacturing may yield even higher purity grades.
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Composite Materials:
Combining with other materials could create specialized composites for niche applications.
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Renewable Energy:
Potential expanded use in solar, wind, and energy storage systems.
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5G Infrastructure:
Growing importance in high-frequency communication equipment.
With its unparalleled combination of properties and versatility, C110 oxygen-free copper continues to be indispensable across technological sectors. Its ongoing development promises to support future innovations across multiple disciplines.
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