Oxygen-Free Copper is a grade of high-purity copper distinguished by its extremely low oxygen content. The stringent control over impurities grants it a set of superior physical, chemical, and mechanical properties, making it a critical material for advanced technological applications.
High Purity and Low Oxygen Content
High Purity: Oxygen-Free Copper is characterized by exceptional purity. For instance, common grades specify minimum copper contents of 99.97% (Grade 1) and 99.95% (Grade 2), minimizing impurity-related performance degradation.
Ultra-Low Oxygen: The defining feature is its extremely low oxygen content, typically specified at ≤0.0003% (3 ppm) for Grade 1 and ≤0.0005% (5 ppm) for Grade 2. This fundamental characteristic underpins its enhanced material properties.
Superior Electrical and Thermal Conductivity
Excellent Electrical Conductivity: It offers electrical conductivity approaching the theoretical maximum for pure copper (≥101% IACS), ensuring minimal energy loss during transmission. This makes it indispensable for high-efficiency electrical and electronic components.
Outstanding Thermal Conductivity: Its high thermal conductivity enables rapid and efficient heat dissipation. This property is crucial for thermal management in power electronics, high-performance computing, and automotive control systems.
Excellent Fabrication and Joining Properties
Good Workability: The material possesses excellent ductility and malleability, allowing it to be easily formed, drawn, and machined into complex shapes and precise dimensions.
Ease of Welding and Joining: Oxygen-Free Copper exhibits excellent weldability and can be reliably joined with various materials using standard techniques like brazing and soldering, forming strong, durable connections.
Exceptional Corrosion and Cryogenic Resistance
Corrosion Resistance: It demonstrates strong resistance to corrosion in atmospheric conditions, fresh water, and slow-moving seawater, as well as good resistance to non-oxidizing acids.
Cryogenic Stability: Its mechanical properties remain stable and ductile at very low temperatures, preventing embrittlement. This makes it suitable for applications in aerospace and cryogenic systems.
Absence of Hydrogen Embrittlement and Low Magnetic Permeability
No Hydrogen Embrittlement: The manufacturing process prevents hydrogen absorption, eliminating the risk of hydrogen embrittlement-a failure mode that can plague other high-strength metals.
Low Magnetic Permeability: It is essentially non-magnetic (diamagnetic), which is vital for applications where magnetic interference must be minimized, such as in sensitive scientific instruments and certain medical imaging components.
Summary of Key Advantages and Applications
| Property Category | Core Advantages | Typical Application Fields |
|---|---|---|
| Purity & Conductivity | Minimal impurity scattering, near-theoretical electrical/thermal conductivity. | High-frequency and vacuum electronics, high-power busbars, RF components. |
| Fabrication & Reliability | Easy to process and join; resistant to hydrogen embrittlement and corrosion. | Windings for high-field magnets, precision waveguides, chemical processing equipment. |
| Environmental Stability | Stable performance from cryogenic to elevated temperatures; non-magnetic. | Cryogenic plumbing, MRI system components, satellite waveguides, aerospace connectors. |
| Thermal Management | Efficient heat spreading and dissipation. | Heat sinks, high-power LED substrates, electric vehicle power electronics. |
In summary, Oxygen-Free Copper stands out due to its exceptional purity, unparalleled conductivity, excellent fabricability, and remarkable reliability across diverse environmental conditions. These attributes solidify its role as an enabling material in cutting-edge industries including advanced electronics, electric vehicles, aerospace, and scientific research, where performance and reliability cannot be compromised.
Our product range
| Product Category | Product Name | Common Standard Grades | Key Specifications (Typical) | |
|---|---|---|---|---|
| Copper Tubes / Pipes | • Straight & Coiled Tubes • Refrigeration Tubes • Capillary Tubes • Heat Exchanger Tubes |
C11000 (ETP Copper) C12200 (DHP Phosphorous Copper) C12000 (DLP Phosphorous Copper) EN 12735-1: CU-DHP JIS H3300: C1220, C1100 |
Standards: ASTM B75, B88, B280, EN 12735 OD: 3mm - 300mm Wall Thickness: 0.3mm - 10mm Condition: Annealed (O), Hard (H) |
|
| Copper Sheets / Plates | • Hot Rolled Plates • Cold Rolled Sheets • Cut-to-Size Blanks |
C11000 (ETP Copper) C10200 (Oxygen-Free Copper) C26000 (Cartridge Brass) C70600 (90-10 CuNi) |
Standards: ASTM B152, B465 Thickness: 0.5mm - 50mm (Plates: >3mm) Width: up to 1500mm Length: up to 4000mm or custom Condition: Rolled, annealed, mill finish |
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| Copper Rods / Bars | • Round, Square, Hexagonal Rods • Copper Alloy Rods • Precision Ground Bars |
C11000 (ETP Copper) C36000 (Free-Cutting Brass) C26000 (Cartridge Brass) C10200 (Oxygen-Free Copper) C17200 (Beryllium Copper) |
Standards: ASTM B187, B301, EN 12163, 12164 Diameter: 2mm - 200mm Length: Straight bars up to 6m, coils available Condition: Drawn, extruded, annealed |
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| Copper Wires | • Bare Copper Wire (Hard/Soft) • Enamelled (Magnet) Wire • Stranded & Bunched Wires • Braided Wires & Flexibles |
C11000 (ETP Copper) C10200 (Oxygen-Free Copper) C10100 (C-OF Copper) Grade: 1/2 Hard, 1/4 Hard, Soft |
Standards: ASTM B1, B2, B3, IEC 60228 Diameter: 0.05mm - 12mm (bare) Conductivity: 100% IACS min. Packaging: Spools, coils, drums |
|
| Copper Foils | • Rolled Strips (in Coils) • Thin Foils • Connector Alloy Strips |
C11000 (ETP Copper) C26000 (Cartridge Brass) C19210 (Phosphor Bronze, 1.0%) C26800 (Yellow Brass) |
Standards: ASTM B152, B465, EN 1652 Thickness: 0.05mm - 3.0mm (Strips), <0.05mm (Foil) Width: 10mm - 600mm (typical coil width) Condition: Hard (H), 1/2 Hard, Soft (O), rolled temper |
Our factory
We are a specialized manufacturing factory with integrated production capabilities for copper and copper alloy products, including tubes, rods, bars, plates, sheets, strips, and wires. Our facility is equipped with modern production lines featuring extrusion presses, continuous casting machines, precision rolling mills, drawing benches, and controlled annealing furnaces, enabling us to control the entire process from raw material to finished product. Supported by an in-house laboratory for quality assurance and compliant with international standards (ASTM, EN, JIS), we provide customized solutions, reliable packaging, and efficient export logistics to serve global clients in HVAC&R, electrical, automotive, and industrial sectors.
copper product packaging
We take great care in packaging to ensure our copper products arrive in perfect condition. Standard packaging includes moisture-resistant materials, sturdy wooden crates or pallets, and protective corner guards to prevent damage during transit. For products requiring enhanced protection against oxidation, such as high-purity copper tubes or finely finished surfaces, we also offer optional nitrogen-purged (inert gas) packaging upon request. This service effectively minimizes surface oxidation during long-distance shipping or storage, ensuring your products maintain their optimal quality upon arrival.
