About copper clad aluminum wire

【ALUMINIUM NETWORK】The copper clad aluminum wire is a bimetallic composite wire that covers the copper layer concentrically on the aluminum core and forms a metal bond with the copper-aluminum interface. It is a replacement product of the copper wire, and is new in the 21st century. Composite material. With the advantages of rational use of natural resources, lower production costs, and easy construction, it has broad prospects for development.

1. Specification and indication of copper clad aluminum wire

Copper clad aluminum wire is divided into two kinds according to the volume ratio of copper layer (volume ratio of copper layer to copper clad aluminum wire): the volume ratio of copper layer is within 10% in the range of 8-12% (abbreviated as 10) The volume ratio of copper layer in the range of 13-17% is 15% (15 in short). Copper clad aluminum wire is divided into two types according to the different hard and soft states: After annealing, the unannealed state is represented by H. After annealing, the softener is represented by A in soft state. Therefore, copper clad aluminum wire can be divided into four categories: 10H, 10A, 15H, 15A. Various types of copper clad aluminum wire can be drawn into different nominal diameters.

The copper clad aluminum wire is represented by the code name CCA (Copper Clad Aluminum). The specification method is:

For example, for a soft copper-clad aluminum wire with a diameter of 2.77mm and a copper layer volume ratio of 15%, its specifications are:

CCA-15A-2.77

2. Implementation standards and performance indicators for copper clad aluminum wire;

(1) The implementation standards for copper clad aluminum wire are:

Electronic Industry Standard of the People's Republic of China: SJ/T11223-2000 "Copper Clad Aluminum Wire"

United States: ASTM B566-93 (2002)

(2) Physical indicators of copper clad aluminum wire:

Specification Volume ratio of copper layer (%) Ratio of copper layer mass (%) to the length of pure copper wire (%) Density (g/cm3) Larger DC resistivity Ωmm2/m (20°C) Less relative conductivity (% IACS)

CCA-10% 8-12 27 2.65 : 1 3.32 0.02743 63

CCA-15% 13-17 37 2.45 : 1 3.63 0.02676 65

Pure copper wire 100 100 1:1 8.89 0.017241 100

3, copper clad aluminum wire advantages:

(1) The copper clad aluminum wire is produced by adopting international advanced cladding welding process. The copper layer adopts fine copper with purity of more than 99.97%. The copper layer has high density and good conductivity; metallurgy is realized between the copper layer and the aluminum core wire. In combination, the copper layer is distributed evenly along the circumference and in the longitudinal direction with good concentricity. All technical indicators of the products are accepted according to the ASTM B566-93 standard of the United States and the electronic industry standard of China: SJ/T11223-2000 "Copper Clad Aluminum Wire".

(2) Copper Clad Aluminum Wire and Pure Copper Wire Under the same conditions of weight and diameter, the length ratio of copper clad aluminum wire to pure copper wire is 2.6:1. This greatly reduces the cost of cable production. Buying 1 ton of copper-clad aluminum wire is equivalent to purchasing 2.6 tons of pure copper wire, which can greatly reduce the cost of raw materials.

(3) Compared with pure copper wire, copper-clad aluminum wire is of no value to the thief, because it is almost impossible to separate the copper cladding from the aluminum core wire. Therefore, additional anti-theft effects can be received.

(4) It is more ductile than copper wire and it does not generate insulating oxides like aluminum, so it is easier to process. And better conductivity.

(5) The copper clad aluminum wire is light in weight and easy to transport and install. Therefore, labor costs can also be reduced.

4, application areas:

(1) Frequency signal transmission:

â—‡Flexible coaxial RF cable material;

â—‡Leakage cable inner conductor material;

内 Network conductor inner conductor material;

å¾® Fine coaxial cable inner conductor material;

优选 Preferred inner conductor material for cable television coaxial cable;

◇ 50Ω RF cable, flexible RF coaxial cable inner conductor material;

(2) Power transmission:

绞 Stranded wire material;

保险丝 Fuse material;

电力 Power cable conductor material;

â—‡ Construction fabric wire conductor material;

(3) Busbars and other conductor materials;

â—‡ Special cable conductor materials for automobiles and motorcycles;

â—‡ Computer cable, control cable and other data cable inner conductor material;

(4) Other areas:

音频 audio and video conductor materials;

电源 Power line conductor material;

导体Computer Peripherals, Conductor Materials for Computer Cables

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