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C10100 copper tube has good plasticity and machinability and can be processed through a variety of processes such as cold rolling, drawing, annealing, etc. In addition, it also has excellent corrosion resistance and mechanical properties, allowing it to maintain stable performance in a variety of environments
Size range and international standards of C10100 copper tube:
Size range:
Outer diameter:
Round tube: 2mm to 914mm
Square/rectangular tube: side length 2mm to 1016mm
Wall thickness:
Round tube: 0.2mm to 120mm
Square/rectangular tube: 0.2mm to 120mm
Length:
Standard lengths include 3m, 5.8m, 6m, 11.8m, 12m, and can also be customized according to needs.
International standards:
ASTM standards:
ASTM B75: Applicable to seamless round, square and rectangular copper tubes, covering materials such as C10100.
ASTM B88: Involves copper tubes for water supply.
ASTM B280: Applicable to copper tubes for air conditioning and refrigeration equipment.
European standards:
EN 13348: High-quality copper tubes for gas and water supply systems.
EN 12735-1: Covers copper tubes for air conditioning and refrigeration.
Other standards:
JIS H3300 (Japanese standard), DIN 1754/8905 (German standard), GB/T 1527 (Chinese standard), etc.
Additional information:
Processing status: C10100 copper tube can be manufactured by cold drawing or annealing process, and the hardness grades include soft state (O), semi-hard (H/2), full hard (H), etc.
Shape and use: Supports a variety of shapes such as round, square, rectangular, etc., suitable for air conditioning, refrigeration, construction, industrial pipelines and other scenarios.
Customization options: Customizable wall thickness, length, surface treatment (such as polishing, grinding, mirror, etc.).
The chemical composition of C10100 oxygen-free copper varies slightly in different standards:
Core ingredients
Copper (Cu): ≥99.99% (most standards), some standards are ≥99.97% (Cu+Ag) or >99.95%.
Oxygen (O): usually ≤0.001% (10ppm), but some standards are relaxed to ≤0.03% or ≤0.002%.
Impurity elements (maximum content)
Lead (Pb): ≤0.001% (common), occasionally ≤0.003%.
Sulfur (S): ≤0.0018% or ≤0.004%.
Phosphorus (P): ≤0.0003% or ≤0.002%.
Zinc (Zn): ≤0.0001% or ≤0.003%.
Other elements (such as Ca, Hg, Se, Te, Bi, As, etc.): all ≤0.0001%~0.002%.
C10100 is a high-purity oxygen-free copper (OFHC) whose mechanical properties vary significantly depending on the material state (such as annealing, cold working, etc.).
1. Tensile strength and yield strength
Annealed state (O state): tensile strength ranges from 200-235 MPa, and yield strength ≥80 MPa.
Cold working state: With the increase of cold working degree, the strength increases significantly:
1/2 hard state (1/2H): tensile strength ≥250 MPa, yield strength ≥350 MPa.
Full hard state (H): tensile strength can reach 300-455 MPa, and yield strength can reach up to 400 MPa.
Extreme cold working (such as EH state): tensile strength can be further increased to 550 MPa (other alloy states may refer to similar trends).
2. Elongation
Annealed state: the elongation is the highest, up to 35%-55%.
After cold working: the elongation drops significantly, such as ≥15% in 1/2H state and ≥2% in full hard state (H). Some data mention that the minimum elongation is ≥8%, which may correspond to a medium degree of cold working.
3. Hardness
Vickers hardness (HV): annealed state is about 75-90 HV, full hard state (H) can reach 90-120 HV.
Rockwell hardness: Rockwell F hardness is 40-100, Rockwell 30T hardness is 27-70.
4. Elasticity and shear properties
Elastic modulus: tensile modulus is 115 GPa, shear modulus is 44 GPa.
Poisson's ratio: 0.31-0.34.
5. Other mechanical properties
Shear strength: 150-240 MPa.
Fatigue strength and impact toughness: After cold hardening, the impact strength is improved, but the specific values need to refer to experimental data.
Creep resistance: High-purity oxygen-free copper shows good creep resistance.
6. Effect of state on performance
Annealing treatment (500-700°C): restore ductility and reduce strength.
Cold working (such as rolling, drawing): significantly improve strength, but sacrifice ductility.
Recrystallization temperature: The recrystallization starting temperature after cold hardening is 200-300°C.
Processing performance:
Supports rolling, drawing, forging, deep drawing and complex forming (such as waveguides, cavity resonators).
Good weldability, can use a variety of welding techniques, and no risk of hydrogen embrittlement
Production process and product advantages of C10100 copper tube:
1. Production process
Melting and continuous casting
The cathode copper (1200℃) is melted in an industrial frequency furnace, formed by horizontal continuous casting, and then water-cooled to 50℃ to form a preliminary copper tube blank.
Some high-end products (such as oxygen-free copper tubes for heat pipes) require strict control of oxygen content (≤10ppm) and the use of small-batch continuous production technology to ensure that the ingredients meet the C10100 (TU0) standard.
Rolling and drawing
Planetary rolling and triple drawing processes are used to improve the dimensional accuracy of copper tubes and reduce eccentricity problems.
High-speed tandem drawing machines and self-developed stretching equipment (such as floating core head stretching) ensure the smoothness and dimensional accuracy of the internal and external surfaces.
Annealing and surface treatment
Online bright annealing technology avoids oxidation and keeps the surface smooth and scratch-free.
Surface treatment includes grinding, polishing, mirroring, sandblasting, etc. to improve appearance and corrosion resistance.
Testing and straightening
Use direct reading spectrometers, electronic tensile machines and other precision equipment to detect chemical composition and physical properties.
High-precision straightening machines ensure the straightness of copper tubes without straightening marks.
Product Advantages
High Purity and Excellent Electrical/Thermal Conductivity
Purity of 99.99% (C10100/TU0), extremely low oxygen content, electrical conductivity ≥57ms/m, thermal conductivity of 10100 W/m·K, suitable for high-demand fields such as electronic components and cables.
Corrosion Resistance and Long Life
It has strong corrosion resistance to the atmosphere, fresh water, seawater and non-oxidizing acid environments, and its service life can reach decades.
Avoid using in oxidizing acid or sulfide environments.
Excellent Processing Performance
Excellent cold and hot processing performance, supports rolling, stretching, forging, welding and other processes, and can form complex shapes.
High ductility (elongation ≥45%), suitable for precision manufacturing needs.
High Strength and Lightweight
Strength is improved through cold/hot processing (tensile strength ≥205MPa) while maintaining lightweight characteristics.
Diverse Application Scenarios
Widely used in air conditioners, refrigerator pipelines (pressure resistance, good sealing), as well as high-end fields such as aerospace, shipbuilding, and electronics.
Customizable specifications (outer diameter 2-910mm, wall thickness 0.2-120mm) to meet different needs.
Environmental protection and economy
Waste materials (such as copper chips and emulsion) in the production process can be recycled
Energy management technology reduces energy consumption.
Low long-term use cost and less maintenance requirements.
Q1:Do you provide samples? Is it free or extra?
A1:Yes, we can provide samples free of charge and the customer will pay the freight.
Q2:What if I don't have export experience ?
A2:We have reliable forwarder agent which can ship items to you by sea/air/Express to your doorstep. Any way, we will help you choose the most suitable shipping service.
Q3:How long is your lead time?
A3:If it is in stock, it is usually 5-10 days. Or, if there is no inventory, 15 days, depending on the quantity.
Q4:What are your terms of payment?
A4:30% T/T deposit in advance, 70% T/T balance within 5 days after B/L copy, 100%.Irrevocable L/C at sight, 100% Irrevocable L/C after receive B/L 30-120 days, O/A.
Q5:How is your technical support?
A5:We provide lifetime online support through Whatsapp/ Skype/ Wechat/ Email. Any problem after delivery, we will offer you call anytime.
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