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Size range of C27400 copper strip and coil:
Thickness range: C27400 copper strip thickness is usually between 0.5 mm and 16 mm.
Width range: Copper strip width can be up to 1250 mm.
Length range: Standard roll size of copper coil is as small as 300 mm and as large as 1000 mm.
International standards:
C27400 copper alloy complies with the following international standards:
GB/T 2051-1989: Chinese national standard for low-phosphorus brass materials.
DIN EN 13601: European standard for highly conductive copper strip.
Chemical composition (mass percentage)
Copper (Cu): 61%-64%
Zinc (Zn): Balance (about 35%-39%)
Lead (Pb): ≤0.10% (some data suggest 0.08%-0.5%, but most limit to ≤0.1%)
Iron (Fe): ≤0.05%-0.15%
Other elements (such as nickel, tin, aluminum, etc.): Total ≤0.5%
Mechanical properties are significantly affected by processing state (such as soft state, hard state, hot state, etc.), and typical values are as follows:
Tensile strength (σ₆)
Soft state (M): ≥290 MPa (such as annealed state)
Hard state (H80): 510 MPa (about 74 ksi)
General standard: 220-585 MPa (depending on processing state)
Yield strength (σ₀.₂)
Soft state: ≥160 MPa
Hard state (H80): 379 MPa (about 55 ksi)
Other states: 28-48 ksi (about 193-331 MPa)
Elongation (δ)
Soft state: ≥30%
Hard state: 10%-15%
Semi-hard state: ≥15%-20%
Hardness
Vickers hardness (HV): 85-175 (depending on state)
Rockwell hardness (HRB) ：10-20
Other properties
Electrical conductivity: 27%-30% IACS (lower than pure copper, but better than most alloys)
Thermal conductivity: 67-138 W/(m·K)
Density: 8.7 g/cm³
Production process and product advantages of C27400 copper strip and copper coil:
1. Production process
Continuous extrusion method
The production of C27400 copper strip usually adopts the continuous extrusion method. This method heats the Φ20 copper rod to a certain temperature, deforms it using a continuous extruder and cools it, thereby generating a product blank with the required cross-sectional shape. This process has the characteristics of high efficiency, energy saving, high production efficiency, and can also improve the yield rate and shorten the production cycle.
Rolling process
In the production of some copper strips, the rolling process is also used. The process flow of the rolling workshop includes incoming materials, milling, rough rolling, intermediate annealing, and finishing. These processes ensure the surface quality and mechanical properties of the copper strip.
Modern equipment support
Modern production equipment is an important guarantee for the production of copper strips. Our professional technology can stack multiple copper coils together and make longer strips through a single stamping process, thereby reducing downtime and mold breakage rate and improving production efficiency.
Environmental protection and technological improvement
With the improvement of environmental protection requirements, the production process of copper strips also pays attention to waste gas treatment and resource utilization. For example, waste gas mainly comes from smoke generated by melting furnaces and oil mist generated by rolling mills. Pollution can be effectively reduced by improving equipment and technology.
2. Product advantages
Excellent mechanical properties
C27400 copper strip has high strength and good plasticity, suitable for a variety of engineering and industrial applications. Its mechanical properties include high tensile strength, elongation and hardness, which makes it excellent in the manufacture of stress-bearing parts such as pins, rivets, washers, etc.
Good processing performance
C27400 copper strip is easy to cut and weld, and has certain corrosion resistance, but it is prone to corrosion cracking. This feature makes it very suitable for the manufacture of heat sinks, washers, wires and other products.
Wide range of applications
C27400 copper strip is widely used in many fields due to its performance characteristics, including electronic components, wires and cables, automotive parts and industrial equipment manufacturing. Especially in new energy vehicle power batteries, the demand for high-performance copper strips is increasing.
Economic and practical
C27400 copper strip has a relatively low price and is a widely used ordinary brass variety. Its price advantage makes it highly competitive in the market.
Environmental protection and sustainability
Due to the high zinc content (about 35.6%-39.6%) in C27400 copper alloy, its cold forming performance is good, and the price of zinc is relatively cheap, so this alloy not only meets market demand, but also has certain economic benefits.
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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