copper rod
Oxygen-Free Copper Rod (OF Copper)
Sark Wire manufactures oxygen-free (OF) copper rod in the United States at our Georgia facility using advanced Upcast OY technology. This process produces a high-purity copper rod in sizes ranging from 8mm to 19mm with excellent electrical conductivity, low oxygen content, and a smooth, consistent surface finish. Our OF copper rod is designed for applications that require superior conductivity, fine-wire drawing capability, and consistent metallurgical quality. The material can be drawn down to fine gauges and adapted for a variety of applications.
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Sark Wire supplies oxygen-free copper rod to manufacturers that require consistent quality and reliable supply for demanding production processes.
We commonly serve:
Fine-wire and superfine wire producers
Cable and conductor manufacturers
Our customers rely on consistent grain structure, clean surfaces, and uniform metallurgical properties to support high-speed drawing and precision applications.
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Sark Wire maintains strict quality and process controls to ensure consistent composition, surface quality, and traceability.
Certifications include:
Quality testing and monitoring are performed throughout production to ensure material consistency and compliance with customer specifications.
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Our oxygen-free copper rod production is designed to support demanding downstream processing requirements.
Capabilities include:
Excellent conductivity and low oxygen content
Smooth, consistent surface finish for improved drawability
Rod suitable for fine-wire and superfine-wire applications
We work closely with customers to ensure rod quality meets drawing, plating, and performance requirements.
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Sark Wire produces oxygen-free copper rod in the following diameters:
8 mm
9.50 mm
12.50 mm
16 mm
19 mm
These sizes are suitable for a wide range of downstream processing and drawing operations.
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Our OF copper rod is used in demanding applications across multiple industries:
These industries require high conductivity, consistent metallurgical properties, and reliable material supply to maintain production quality and performance.
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Customers choose Sark Wire for oxygen-free copper rod because we offer:
U.S.-based production
Advanced Upcast OY technology
Consistent metallurgical quality
Smooth surface finish for improved drawability
Reliable lead times and supply
Technical support and responsiveness
We understand the needs of wire drawers and conductor manufacturers and work to provide dependable material that supports efficient production.