Description
5N OFC Copper Wire – 99.999% Purity
🔹 Product Overview
The OFC Copper Wire catalog lists 5N (99.999%) purity, a bright finish and diameters from 0.02mm to 5mm. Select diameter, coil or cut length, condition and surface requirements for the component. Specify the required purity analysis and electrical resistivity or conductivity tests separately.
Confirm the purity reporting basis, oxygen content and other required impurity limits in the batch analysis. For the stated OFC material, order the chemical and electrical checks needed for the intended wire condition and end use.
🔹 Key Technical Features
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99.999% (5N) Purity – Reduces impurities that impair conductivity.
- Oxygen requirement — the catalog lists less than 10 ppm; confirm the ordered analysis basis and report
- Electrical requirement — the catalog lists ≥ 101% IACS; confirm the required test and delivery condition
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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.
- Specification references — ASTM B170 concerns refinery shapes; IEC 60228 concerns cable conductors. State the applicable wire specification and electrical tests for the order.
📊 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 (refinery-shape reference), IEC 60228 (cable-conductor reference); confirm ordered wire requirements |
🔹 Why Choose Our OFC Copper Wire?
- Electrical design — select resistance and current requirements for the wire geometry
- Material condition — specify oxygen analysis, finish and storage or exposure requirements
- Signal application — confirm cable construction, connections and required system tests
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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
- Speaker, interconnect and headphone-wire enquiries — specify conductor geometry, connections and electrical requirements
📡 Telecommunications
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Used in data cables, coaxial cables, and fiber optic reinforcement for high-speed signal transmission.
⚙ Aerospace & Defense
- Wiring-harness enquiries — specify the conductor condition, environment and application inspection requirements
🔬 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
The comparison table retains catalog reference labels. Evaluate the ordered conductor geometry, electrical resistance, finish and operating environment for the application; confirm the required chemical and electrical reports for the delivered condition.
| 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
Specify the chemical, electrical, mechanical and surface checks required for the OFC Copper Wire order, and confirm the corresponding batch documents:
- ICP-OES analysis — confirm the measured elements, reporting basis and acceptance limits
- Oxygen analysis — confirm the applicable gas-analysis method and reported limit
- Tensile and elongation tests — confirm the required criteria for the wire condition
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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.
- Custom Labeling — specify lot number, size and required purity-analysis documentation
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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.
Order 5N OFC Copper Wire
Send diameter, coil or cut length, soft or hard condition, finish, quantity and required purity, oxygen or electrical tests through our contact page. Browse copper wire. For feedstock enquiries in another form, review high-purity copper granules and confirm the particle and assay requirements separately.
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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