Description
Premium 5N OFC Copper Wire – Ultra-Pure 99.999% Conductivity for High-Performance Applications
🔹 Product Overview
Our OFC Copper Wire offers exceptional conductivity as defined by the International Annealed Copper Standard (IACS), ensuring low signal loss and outstanding durability for demanding applications.This premium-grade material ensures exceptional electrical conductivity, outstanding corrosion resistance, and maximum signal fidelity. Available in diameters ranging from 0.02mm to 5mm, each wire undergoes precision drawing and bright polishing, making it ideal for applications in high-end audio systems, aerospace wiring, telecommunications, and precision instrumentation.
Unlike conventional copper wire, OFC Copper Wire contains less than 10 ppm oxygen, eliminating oxide inclusions that can cause microstructural weaknesses and electrical losses. This makes it the preferred material for industries that demand superior conductivity, long-term reliability, and unmatched purity.
🔹 Key Technical Features
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99.999% (5N) Purity – Reduces impurities that impair conductivity.
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Oxygen-Free Refining Process – Less than 10 ppm oxygen for maximum stability.
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High Conductivity – ≥ 101% IACS for ultra-low resistance.
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Wide Diameter Range – From 0.02mm for micro-electronics to 5mm for heavy-duty power applications.
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Annealing Options – Soft annealed for flexibility or hard drawn for rigidity.
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Bright Polished Finish – Smooth surface for improved solderability and connection reliability.
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Standards Compliance – Meets ASTM B170 and IEC 60228 specifications.
📊 Technical Specifications
| Parameter | Specification |
|---|---|
| Material | Oxygen-Free Copper (OFC) |
| Purity | 99.999% (5N) |
| Diameter Range | 0.02mm – 5mm |
| Oxygen Content | ≤ 10 ppm |
| Conductivity | ≥ 101% IACS |
| Tensile Strength | 200 – 250 MPa |
| Elongation | 25 – 35% |
| Density | 8.96 g/cm³ |
| Surface Finish | Bright / Polished |
| Annealing State | Soft / Hard |
| Standards | ASTM B170, IEC 60228 |
🔹 Why Choose Our OFC Copper Wire?
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Maximum Electrical Efficiency – High conductivity ensures minimal power loss during transmission.
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Long-Term Reliability – Oxygen-free structure resists internal corrosion.
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Improved Signal Clarity – Particularly important for high-end audio and digital data transmission.
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Superior Solderability – Clean surface improves bonding quality.
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Custom Manufacturing – Tailored diameters, lengths, and mechanical properties.
🔹 Manufacturing Process
1. Electrolytic Refining
High-grade copper cathodes undergo multi-stage electrolytic refining to remove metallic and non-metallic impurities.
2. Oxygen-Free Melting
Copper is melted in an inert atmosphere furnace to achieve oxygen content ≤ 10 ppm.
3. Precision Continuous Casting
Molten copper is cast into rods under strictly controlled conditions, preventing oxide formation.
4. Multi-Stage Drawing
Copper rods are cold drawn through progressively smaller dies to achieve precise diameters.
5. Annealing & Polishing
Wire is heat-treated to desired mechanical properties and polished to a bright, smooth finish.
🔹 Applications of OFC Copper Wire
🎵 High-End Audio & Home Theater
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Speaker cables, interconnects, and headphone wiring benefit from reduced resistance and signal loss.
📡 Telecommunications
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Used in data cables, coaxial cables, and fiber optic reinforcement for high-speed signal transmission.
⚙ Aerospace & Defense
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Wiring harnesses in aircraft, satellites, and defense systems where performance and weight are critical.
🔬 Medical & Laboratory Equipment
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Precision instruments, diagnostic devices, and research apparatus.
⚡ Power Transmission
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High-efficiency motors, transformers, and renewable energy systems.
🔹 Advantages Over Standard Copper Wire
| Property | Standard Copper | OFC Copper Wire |
|---|---|---|
| Purity | ~99.9% | 99.999% (5N) |
| Oxygen Content | 200–400 ppm | ≤ 10 ppm |
| Conductivity | 100% IACS | ≥ 101% IACS |
| Lifespan | Shorter | Longer |
| Corrosion Resistance | Moderate | Excellent |
🔹 Quality Control
Every batch of OFC Copper Wire undergoes:
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ICP-OES Testing – Verifies metallic purity.
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LECO Oxygen Analysis – Confirms oxygen levels below specification.
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Tensile & Elongation Tests – Ensures mechanical integrity.
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Microscopic Surface Inspection – Detects imperfections that could impair performance.
🔹 Packaging & Shipping
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Spools / Coils – Vacuum-sealed to prevent oxidation.
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Custom Labeling – With lot number, size, and purity certification.
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Export-Grade Packaging – Suitable for long-distance, moisture-protected shipping.
🔹 Ordering Information
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MOQ: Negotiable depending on diameter.
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Customization: Non-standard diameters, surface treatments, and coatings available.
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Lead Time: 7–15 working days depending on order volume.
📞 Contact Us
📧 Email: sales@niticu.com
📱 Phone / WhatsApp / WeChat: +86 13335373172
🏭 Factory: Baotai Road Industrial Park, High-tech Zone, Baoji City, Shaanxi, China
🌐 Website: https://niticu.com
📩 Contact us now for pricing, samples, and expert technical support — we respond within 24 hours.
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