Copper and Aluminum Composite Busbar 01

00-Advantages of Copper-Aluminum Composite Plate

Ø Good conductivity: Copper clad aluminum with a copper aluminum volume ratio of 15% or 20% has an AC current carrying capacity of 85% of pure copper compared to copper bars.

Ø Lightweight: The density of copper-clad aluminum bars is only 37% -40% of that of pure copper bars, and the length (volume) of the same weight is 2-2.5 times that of pure copper bars.

Ø Good mechanical properties: Possessing excellent tensile strength, bendability, and elongation.

Ø Solid copper aluminum bonding: Permanent atomic crystal bonding is achieved between two different metal materials at various ambient temperatures, and the copper layer (tin plating, zinc coating) is evenly distributed without any physical defects.

Ø Good ductility and reliability: After special heat treatment, it has a certain plasticity, which is conducive to punching, shearing, and bending products without cracking or separation.

Ø Excellent corrosion resistance: After tin plating or zinc plating on the surface of the copper layer, it has excellent corrosion resistance.

Ø Best Choice: Save copper materials, greatly reduce production costs, And be environmentally friendly, and have no pollution.

01-Introduction of the CCA/Copper clad aluminum plate

Ø According to the principle of skin effect, the current is concentrated and distributed on the surface of the conductor, so the copper in the core of the pure copper bar does not play a significant role.

Ø Copper aluminum composite bars are made by replacing the copper in the core of the copper bar with aluminum based on this principle,After a series of complex processes, it is combined into copper aluminum composite conductive material. 

Ø Copper clad aluminum bars/copper aluminum composite bars fully utilize the strong corrosion resistance, good electrical conductivity, high mechanical strength, and large current carrying capacity of copper bars,There are also advantages of lightweight and low cost for aluminum bars.

Ø Fully utilizing the advantages of copper and aluminum materials, while overcoming their respective shortcomings perfectly,It has been widely used in the electric control and distribution equipment industry, and can also save 40%-50% of conductor costs for customers.

02-Technical parameters of copper clad aluminum material (copper layer area ratio 20%, copper layer mass ratio 45%)

Ø DC Resistivity：0.0248 Ω•m，

Ø Current Carrying Capacity：About 86% of the pure copper

Ø Elongation：12% - 35%

Ø Tensile Strength: 80MPa – 200MPa (Depends on it is soft state or rigid state)

Ø Density：3.94g/cm³

Ø Yield Stress：44MPa-54MPa(Soft state)，152MPa-179MPa(Rigid state)

Ø Modulus of Elasticity: 71GPa

Ø Thermal Conductivity: 0.58 Cal/Cm/Sec