Copper C103 (T1) oxygen-free copper alloy pipe

Copper C103, also known as C10300, is an oxygen-free copper alloy with a purity level of 99.9%, offering enhanced electrical and thermal conductivity. It is commonly referred to as Oxygen-Free High Conductivity (OFHC) copper, primarily due to its low oxygen content, which makes it highly suitable for high-performance applications where conductivity and corrosion resistance are critical.

Copper C103 is extensively used in power distribution, electronics, and telecommunications industries. It is widely utilized in producing high-precision, high-conductivity components, including connectors, wires, and busbars, where reliability and performance are crucial.

Due to its unique properties, Copper C103 is frequently chosen for CNC Machining Service projects, especially in manufacturing CNC Machined Copper Parts that demand high purity and superior conductivity for electrical and industrial applications.

Chemical Composition (Typical)

Physical Properties

Mechanical Properties (Annealed Temper)

Exceptional Electrical Conductivity (≥101% IACS)

Copper C103 is renowned for its outstanding electrical conductivity, offering a minimum of 101% International Annealed Copper Standard (IACS), as per ASTM B193. This makes it one of the best choices for applications requiring high electrical conductivity, such as power cables, electrical connectors, and other components where efficient current transmission is crucial. With a conductivity of ≥101% IACS at 20°C, Copper C103 ensures minimal resistive losses, maximizing the efficiency of electrical systems.

Superior Thermal Conductivity (398 W/m·K)

Per ASTM E1952, Copper C103 exhibits a thermal conductivity of approximately 398 W/m·K at 20°C, making it an excellent material for heat exchange applications. This superior thermal conductivity ensures that Copper C103 can effectively dissipate heat in power distribution components, transformers, and other equipment requiring efficient thermal management.

Excellent Ductility and Workability

Copper C103 has excellent ductility, with elongation values typically exceeding 35% (ASTM E8/E8M). This high level of ductility allows Copper C103 to be easily formed, drawn or bent into complex shapes without compromising its structural integrity. It can be cold-worked into various forms such as wire, busbars, and thin sheets, providing excellent versatility in manufacturing applications. Its formability makes it ideal for high-precision CNC machining, enabling the production of intricate parts with tight tolerances.

Non-Magnetic and Corrosion-Resistant

Copper C103 is inherently non-magnetic, making it an ideal material for applications where magnetic fields need to be minimized, such as in high-frequency communication systems or MRI machines. Copper C103 has enhanced corrosion resistance compared to other copper alloys, especially in moist or saline environments. The low oxygen content prevents the formation of copper oxide (green patina), making it highly durable and resistant to corrosion in harsh conditions, thereby ensuring long-term reliability.

Stable Annealed State (Non-Heat Treatable)

Copper C103 is non-heat-treatable, meaning its strength is developed through mechanical processing, such as cold working, rather than heat treatment. It maintains its high conductivity and dimensional stability after extensive forming, making it suitable for parts that will undergo further processing or that require high precision. The material retains its excellent mechanical properties even in thin-walled sections and complex geometries.

Electrical & Power Distribution: Copper C103 is widely used for busbars, power connectors, and cables due to its high electrical conductivity and corrosion resistance.

Aerospace & Defense: Ideal for components that require low magnetic permeability, such as aircraft electrical systems and high-precision connectors.

Medical Devices: Used for MRI machines and other equipment requiring non-magnetic, conductive components.

Automotive: High-current connectors, electrical terminals, and fuse boxes.

Consumer Electronics: Speaker terminals, high-performance connectors, and other electrical parts where conductivity is key.

Founded in 2008, our company specializes in the international trade of high-quality copper products. We are dedicated to providing a comprehensive range of copper-based solutions to a global clientele.

Our core product portfolio encompasses a diverse spectrum of copper and copper alloy forms, including:

Copper Tubes & Pipes: Precision-engineered for applications in HVACR, plumbing, and industrial systems.
Copper Sheets & Plates: Available in various grades and thicknesses for roofing, fabrication, and architectural uses.
Copper Bars & Rods: Supplied as solid profiles, hexagons, or squares for machining, electrical components, and manufacturing.
Copper Wires & Strands: From fine enamelled wires to large conductive cables for electrical and winding applications.
Copper Foils & Strips: Thin-rolled products essential for electronics, transformers, RF shielding, and flexible circuits.

We also offer related products such as Copper Coils, Copper Profiles, Copper Blanks, Copper Busbars, Copper Fittings, Copper Alloys (including brass and bronze), Copper Anodes, and Copper Cathodes.

Email:sales@gneesteel.com