TP1/C12000 Copper Chemical Composition

TP1 Oxygen-Free Copper is a high-performance copper alloy material known for its excellent electrical conductivity, thermal conductivity, corrosion resistance, and processing performance. It is widely used in energy transmission, heat exchange, transportation, and other fields.

Chemical Composition

Copper (Cu) + Silver (Ag) content ≥ 99.90%

Phosphorus (P) content: 0.004%–0.012%

Total impurities ≤ 0.1%

The addition of phosphorus reduces oxygen content through deoxidation processes, while also improving the material's ductility and corrosion resistance.

Performance Advantages

Electrical and Thermal Conductivity: Residual phosphorus content is lower than in TP2, resulting in superior electrical and thermal conductivity, making it suitable for high thermal conduction requirements.

Corrosion Resistance: Resistant to corrosion in ambient atmosphere, fresh water, and seawater. Capable of resisting cold/hot dilute sulfuric acid and cold concentrated acids, but corrodes rapidly in sulfur- and nitrogen-containing solutions as well as nitric acid.

Processing Performance: Excellent welding and cold bending properties, with no susceptibility to "hydrogen disease" (hydrogen embrittlement), suitable for processing in reducing atmospheres.

Biofouling Resistance: Forms a protective copper ion layer on its surface in seawater, inhibiting marine organism attachment.

Mechanical Properties

Tensile strength: 215–345 MPa (pipes: 215–275 MPa; plates/rods: 245–345 MPa)

Elongation: ≥ 8% (plates/rods); pipe elongation ≥ 25%

Hardness: 55–120 HV (pipes: 55–100 HV; plates/rods: 75–120 HV)

The material offers a balance of moderate strength and plasticity, meeting the demands of complex processing.

Product Forms
Primarily available as pipes, but can also be processed into plates, strips, rods, wires, and other forms to suit diverse application scenarios.

Energy Transmission Systems
Fluid transmission components such as gasoline/gas delivery pipes, drainage pipes, and condenser pipes, leveraging its corrosion resistance and thermal conductivity.

Heat Exchange Equipment
Core components including condenser tubes, evaporator tubes, and heat exchanger tubes, efficiently transferring heat.

Transportation Equipment
Parts such as train carriage components and naval mine tubes, relying on its strength and environmental corrosion resistance.

Other Fields
Applications in refrigeration and air conditioning, radiators, cylinder gaskets, etc., utilizing its thermal conductivity and processing advantages.

Process Control
Strict management of environmental conditions (temperature, humidity), tool precision, and processing techniques is required to ensure stable material performance.
After machining (turning, milling, drilling), grinding or polishing may be necessary to achieve high-precision surface finishes.

Surface Treatment
Electroplating, coating, or passivation treatments are applied as needed to enhance corrosion resistance or meet specific functional requirements.

Quality Inspection
Equipment such as Coordinate Measuring Machines (CMM) and spectrometers are used to inspect dimensions, geometric tolerances, and material purity.