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

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
Wide Diameter Range – From 0.02mm for micro-electronics to 5mm for heavy-duty power applications.
Annealing Options – Soft annealed for flexibility or hard drawn for rigidity.
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
Superior Solderability – Clean surface improves bonding quality.
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

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

Precision instruments, diagnostic devices, and research apparatus.

⚡ Power Transmission

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
Microscopic Surface Inspection – Detects imperfections that could impair performance.

🔹 Packaging & Shipping

Spools / Coils – Vacuum-sealed to prevent oxidation.
Custom Labeling — specify lot number, size and required purity-analysis documentation
Export-Grade Packaging – Suitable for long-distance, moisture-protected shipping.

🔹 Ordering Information

MOQ: Negotiable depending on diameter.
Customization: Non-standard diameters, surface treatments, and coatings available.
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.

5N Copper Wire

5N OFC Copper Wire – 99.999% Purity

Advanced Metals, Engineered for What Comes Next.