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Size range and international standards of C10200 copper strip:
Size range
National standard (GB/T 11091-2014)
Thickness: 0.07~0.80 mm, suitable for copper strip for cables.
Width: 15~305 mm.
Other states such as soft annealing (O60), annealing to 1/8 hard (O80), etc. need to be negotiated by both parties.
Enterprise standards and customized range
The thickness can be extended to 0.1~3 mm (such as Qingdao Xinhuihui Company's products), and some suppliers even support plate thickness of 0.1~100 mm.
The width can be as low as 7 mm (such as Shanghai Jinchi Company's products) and up to 1220 mm (customized requirements).
International standards
ASTM standards
Comply with ASTM B152/B152M-2019, covering thin plates, strips, medium and thick plates and rolled bars.
The mechanical properties are similar to those of the C11000 grade, and the tensile strength range varies depending on the state (e.g. soft state ≥205 MPa, hard state ≥350 MPa).
Other international standards
DIN: The corresponding model is OF-CU (oxygen-free copper).
JIS: Such as the C1020 standard, supports customization of widths of 20 to 610 mm.
EN: For example, Cu-OF (oxygen-free copper).
Other parameter requirements
Conductivity: ≥100% IACS (such as national standards TU1, TU2), and some companies' products can reach ≥101% IACS.
Surface treatment: supports polishing, oiling, mirroring and other methods.
Main ingredients:
Copper (Cu) content: ≥99.95% (oxygen-free copper No. 2) to ≥99.97% (oxygen-free copper No. 1), total impurity content ≤0.03%-0.05%.
Oxygen (O) content: generally ≤0.003% (30 ppm), ≤0.001% (such as vacuum application scenarios).
Impurity restrictions:
Lead (Pb) ≤0.004%, iron (Fe) ≤0.004%, sulfur (S) ≤0.004%, zinc (Zn) ≤0.003%, others such as bismuth (Bi), antimony (Sb), arsenic (As), nickel (Ni), etc. are all subject to restrictions.
Mechanical properties vary significantly depending on the material state (annealed, hard, etc.):
Tensile strength:
Soft state (annealed): 215-275 MPa (≈31.8-40 ksi).
Hard state (cold worked): 261-441 MPa (≈38-64 ksi), up to 462 MPa (67 ksi).
Yield strength:
Soft state: 49-78 MPa (≈7-11 ksi).
Hard state: 290-400 MPa (≈42-58 ksi).
3. Elongation:
Soft state: 35-55% (excellent plasticity after annealing).
Hard state: 10-15% (plasticity decreases after cold working).
4. Hardness:
Brinell hardness (HB): 35-45 HB in soft state, 85-95 HB in hard state.
Rockwell hardness: HRB 40 (soft), HRB 57-100 (hard).
Other properties:
Density: 8.90-8.94 g/cm³.
Modulus of elasticity: 115-120 GPa.
Shear strength: 150-240 MPa.
Thermal and electrical properties
Thermal conductivity: 383-391 W/(m·K) (20℃), equivalent to 100% IACS conductivity.
Melting point: 1080-1083℃.
Thermal expansion coefficient: 17.0-17.7 µm/m·℃ (20-300℃).
Annealing temperature: 375-650℃, hot working temperature: 750-875℃.
Production process and product advantages of C10200 copper strip:
1. Production process
Continuous casting and rolling method
The continuous casting and rolling process is used to produce long copper strips with a thickness range of 0.2-1.2 mm. The process includes copper ingot casting, semi-finished product rolling, annealing treatment and strip packaging to ensure stable material performance.
Combination of cold and hot processing
Supports cold processing (such as stamping, drawing) and hot processing (temperature 750-875℃). The oxygen content does not affect the weldability and processing performance, and is suitable for the forming of complex shapes.
Annealing treatment
The annealing temperature range is 375-650℃, and the hardness of the material can be adjusted (such as M state HBS35-45, Y state HBS85-95) to meet different application requirements.
Precision striping and surface treatment
Provide customized striping (width 7-1000 mm) and surface treatment (polishing, brushing, mirror, etc.), adapted to high-precision requirements such as electronic components.
2. Product Advantages
High Purity and Conductivity
Copper purity ≥ 99.95%, oxygen content ≤ 0.03%, conductivity up to 391W/(m·℃), significantly reducing resistance, suitable for high-power electrical equipment (such as transformers, cables).
No hydrogen embrittlement and corrosion resistance
The oxygen-free property avoids the risk of hydrogen embrittlement, the oxide layer has strong adhesion, is resistant to atmospheric and seawater corrosion, and extends service life.
Excellent processing performance
Excellent ductility (elongation after annealing is about 50%), can be processed into foil (0.01mm), strip, plate and other forms, and supports complex processes such as stamping and forging.
High temperature stability
Melting point 1083℃, high thermal conductivity, suitable for high-temperature brazing (such as vacuum devices), avoiding leakage problems caused by intergranular cracks.
Wide application areas
Covering electrical (transformer windings, connectors), electronics (lead frames, springs), automobiles (radiators, bearings), ships and other scenarios, adapting to high precision and high reliability 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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