Product Overview of ASTM B111 C10200 Seamless Copper Tube
C10200 is a high-purity oxygen-free copper material with excellent electrical and thermal conductivity and ductility. It is widely used in electronics, power generation, and machinery manufacturing. Its copper content is at least 99.95% and its impurity content is extremely low, making it classified as oxygen-free copper (OFHC) under the ASTM B111 standard. Copper tubes and rods made from this material combine excellent processability with stable physical properties, making it a popular choice as a base material in industry.
Chemical Composition of ASTM B111 C10200 Thick-Wall Copper Tubing
The chemical composition of C10200 strictly complies with the standard and is as follows (mass percentage):
Copper (Cu): ≥99.95%
Oxygen (O): ≤0.0005%
Total of other impurities: ≤0.05% (including trace elements such as silver, phosphorus, and sulfur).
The extremely low oxygen content prevents hydrogen embrittlement even in high-temperature environments, making it suitable for welding and brazing.




Physical and Mechanical Properties of ASTM B111 C10200 Alloy Copper Tubing
1. Electrical and Thermal Conductivity: C10200 has an electrical conductivity of 101% IACS (Annealed Copper Standard) and a thermal conductivity of 391 W/(m·K), making it a suitable material for power transmission and heat dissipation devices.
2. Mechanical Properties:
Tensile Strength: 200-250 MPa (Annealed)
Elongation: ≥35% (Annealed)
Hardness: 35-45 HV (Soft)
3. Corrosion Resistance: Excellent oxidation resistance in dry environments, but requires surface treatment (such as tin plating or nickel plating) to extend service life in humid or sulfur-containing environments.
Processing Characteristics
Cold Working Properties: Can be processed into thin sheets or thin rods through processes such as rolling and drawing. Post-processing, annealing can restore ductility.
Welding Properties: Suitable for processes such as argon arc welding and laser welding, resulting in high weld strength and low porosity. Surface Treatment: Easily polished, plated, or coated to meet diverse aesthetic and functional requirements.
Typical Applications of ASTM B111 C10200 Copper Round Tube
1. Electronics and Electrical: Used in circuit board terminals, transformer windings, vacuum tube components, etc.
2. Industrial Equipment: Core components for heat exchangers, conductive connectors, and electrodes.
3. Scientific Instruments: Its high purity makes it suitable for precision components in ultra-high vacuum environments.
C10200 copper sheets and rods, due to their high purity, excellent electrical and thermal conductivity, and ease of processing, have become important materials in high-end industry and technology. Their stable chemical properties and diverse application scenarios enable them to meet stringent technical requirements.
why choose us

Professional copper pipe supplier
As a professional enterprise dedicated to global copper product trade since 2008, GNEE Metal Group deeply recognizes the quality and responsibility embodied in the ASTM B111 standard. This standard not only specifies chemical composition and mechanical properties but also represents a comprehensive quality commitment spanning manufacturing processes to testing and verification. GNEE solemnly assures global customers that every ASTM B111-standard condenser tube and copper alloy tubing we supply will strictly adhere to its requirements for seamless manufacturing, annealing treatment, eddy current testing, and various mechanical performance tests.
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