What is oxygen-free copper wire?

High-purity copper drawn for high conductivity and low signal loss, used in premium power and signal conductors.

To your confirmed temper, diameter and conductivity class; we supply against the conductor specification you provide.

Bare oxygen-free copper, or tinned for corrosion resistance (see tinned copper wire); the choice depends on the environment and termination.

Conductor Materials

Oxygen-Free Copper Wire for High-Performance Electrical Applications

Purity: 99.99% oxygen-free copper for superior conductivity
Diameter range: 0.1 mm to 6.0 mm
Low electrical resistance ideal for high-end audio and electrical systems
Flexible and annealed for easy handling
Packaged in coils or reels for industrial applications

Supplied by Zhongbo against a confirmed source, grade and specification — request a quote with your material, standard, quantity, required certificates and destination.

Get a Quote Download catalogue

Oxygen-Free Copper Wire (OFC) is made from high-purity copper (99.99%) and is engineered to deliver superior electrical conductivity with minimal signal loss. It is widely used in high-performance audio systems, precision instruments, and sensitive electronic applications. The oxygen-free manufacturing process eliminates impurities, enhancing corrosion resistance and long-term reliability. Our OFC wires are available in a range of diameters and packaging formats to suit both commercial and industrial uses. For more product details or to request customized specifications, please contact the supplier.

Specifications

Packaging & Shipping

Ports of Shipment: Tianjin Port, Qingdao Port, Shanghai Port

Lead Time: 15–20 working days

Unit Details:
Dimensions per Unit: 20 × 15 × 25 cm
Weight per Unit: 14 kg/spool
Units per Export Carton: Approx. 24 tons per container (standards vary by country)
Export Carton Dimensions (L×W×H): 108 × 108 × 80 cm
Export Carton Weight: Approx. 1 ton (UK)

Packing Options:
✔️ Standard seaworthy packing: plastic film wrapping + woven bag/Hessian cloth, palletized if required
✔️ Customized labels and packing on request
✔️ Supports air freight, sea freight (FCL/LCL), and truck delivery

Zhongbo Steel ensures safe and reliable packaging to protect your products during transport and storage.

Sourcing & documentation

Zhongbo confirms the manufacturer or mill, material grade, origin, applicable standard, batch documentation and inspection scope with you before order acceptance.

What to include in your enquiry

Application and required material / grade
Dimensions, class or specification
Applicable standard
Quantity and delivery schedule
Required certificates and inspection
Destination port

Certificates & inspection

Mill or manufacturer certificates and batch documentation are provided according to the confirmed source. Third-party or pre-shipment inspection (SGS, Bureau Veritas, Intertek or a buyer-appointed agency) can be arranged when included in the order. See test reports & inspection.

Request a quote

Send your material, grade, standard, quantity and required documents, and we’ll reply with a quotation.

Get a Quote

Technical documents

Download the product catalogue, or contact us for certificates and test reports.

Product catalogue (PDF)

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