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Detailed size range of copper strip and copper coil
Copper Strip
Thickness range: 0.05～3.0 mm
Width range: 10～1000 mm
Supply form: Coil supply.
(Note: The spot copper strip thickness provided by some suppliers can be extended to 0.1～100 mm, but the mainstream industrial specifications are mainly 0.05～3.0 mm.)
Copper Coil
Cold-rolled copper coil: thickness 0.01～3.0 mm, suitable for high-precision stamping processing.
Hot-rolled copper coil: thickness 2.0～8.0 mm, suitable for industrial needs of thicker materials.
Width and length: Width can reach 3000 mm, and length is customized according to the inner diameter of the coil (usually ≥300 mm) and customer requirements.
International standard reference
ASTM B103/B103M: covers the chemical composition and mechanical property requirements of phosphor bronze plates, strips and coils.
EN 1652: General standard for copper and copper alloy plates, strips and foils.
JIS H3110: Dimensional tolerances and performance indicators for phosphor bronze plates and strips.
BS 1432/EN 13601: Some high-conductivity copper strips (such as grounding strips) must comply with this standard. The conductor size is usually 10-75 mm wide and 2.0-5.0 mm thick.
The main components of C54400 are copper as the base, with elements such as tin, lead, zinc and phosphorus added. The specific ranges are as follows:
Copper (Cu): balance (usually accounting for about 87%-89%).
Tin (Sn): 3.5%-4.5% (some documents extend to 3.0%-5.0%).
Lead (Pb): 3.4%-4.5% (key element, improving cutting performance).
Zinc (Zn): 1.5%-4.5% (some documents are marked as 3.0%-5.0%).
Phosphorus (P): 0.01%-0.50% (enhancing wear resistance and rigidity).
Other elements: Iron (Fe) ≤0.10%, the total of impurities such as aluminum (Al) and antimony (Sb) ≤0.2%.
Mechanical properties are significantly affected by the material state (such as annealing, cold working, heat treatment), and the main parameters are as follows:
Tensile strength
Range: 275 MPa (annealed state) to 745 MPa (spring aged state).
Typical value: 345-450 MPa for hard bars, up to 670 MPa for spring aged (H08).
Yield strength
Range: 131-434 MPa, depending on the processing state.
Elongation
Annealed state: up to 50% (some literature marked as 8%-18%).
Hard state: ≥8% (such as hard bars).
Hardness
Rockwell hardness (HRB): 7 (soft state) to 97 (superhard state).
The Rockwell B hardness of spring aged (H08) is 92.
Modulus of elasticity: 110 GPa (Young's modulus), shear modulus 40 GPa.
Other key properties
Processing performance
Cold workability: Excellent, suitable for stamping, bending and other processes, but the lead content limits deep drawing.
Hot workability: Not recommended, because lead may cause hot brittleness.
Weldability: Good soldering and brazing, but not suitable for oxyacetylene welding.
Corrosion resistance
Excellent performance in seawater, atmosphere and acid and alkali environment, suitable for marine engineering.
Application areas
Bearings, bushings, gears, valve parts, electrical connectors, etc.
C54400 copper strip and copper coil production process and product advantages:
1. Production process
Continuous extrusion method
The production of C54400 copper strip usually adopts the continuous extrusion method, which is an efficient, energy-saving and high-production process. In this method, the copper rod is continuously extruded and deformed after heating, and the product blank with the required cross-sectional shape is generated by circulating water cooling. This process can significantly improve the yield rate, shorten the production cycle, and reduce the oxygen content, so that the copper strip has higher conductivity and mechanical properties.
Combination of cold rolling and hot rolling
The production of copper strip may also involve the combination of cold rolling and hot rolling processes. For example, the thickness range of hot-rolled copper strip coils is 2-8mm, while the thickness range of cold-rolled copper strip coils is 0.01-3mm. Hot rolling is mainly used for preliminary forming, while cold rolling is used to further improve thickness accuracy and surface finish.
Automated production line
Modern copper strip production lines are usually equipped with automated equipment, and the processing process from raw materials to finished products is highly automated. For example, the production process includes milling, annealing, shearing, inspection, cleaning and other steps to ensure the consistency and stability of product quality.
Surface treatment technology
During the production process, the copper strip will also undergo surface passivation treatment to improve its corrosion resistance and processing performance. In addition, the acid purification process is also used to reduce metal loss and improve product performance.
Advanced annealing and cold rolling equipment
Advanced annealing equipment and cold rolling equipment are used in production to achieve constant pressure, constant roll gap and automatic thickness control, thereby ensuring the dimensional accuracy and surface quality of the copper strip.
2. Product advantages
Excellent conductivity
C54400 copper strip has high conductivity and is suitable for fields requiring high-performance conductive materials, such as electric vacuum devices, electronic components, wires and cables, etc.
2. High strength and wear resistance
Due to the addition of phosphorus and other elements to the C54400 copper alloy, it has high strength and wear resistance, and is suitable for the manufacture of mechanical parts such as bearings, gears, and shafts.
Good processing performance
C54400 copper strip has excellent machinability and cold processing, and is easy to perform turning, stamping, bending and other processing operations. It is widely used in precision instruments, mechanical equipment manufacturing and other fields.
Environmentally friendly characteristics
C54400 copper alloy does not contain lead and beryllium. It is an environmentally friendly material that meets the environmental protection requirements of modern industry.
Wide range of applications
C54400 copper strip can be used to manufacture a variety of industrial products such as cables, transformers, industrial valves, instruments, sliding bearings, heat exchangers, etc., and occupies an important position in industries such as automotive electronics, 5G communications, and consumer electronics.
High precision and consistency
Through advanced process control and digital management, C54400 copper strip can achieve highly consistent product quality and meet strict tolerance requirements.
Economic efficiency and stability
The optimization of the production process makes the cost control of C54400 copper strip relatively stable. Its price mainly depends on the level of processing fees and is less affected by fluctuations in raw material prices.
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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