Copper-clad aluminum wire

The copper-clad aluminum wire produced by Henan Chalco is different from the traditional hydrostatic extrusion, rolling and splicing, cladding welding and sleeve rolling. The original "horizontal continuous casting and high efficiency forming-rolling" technology is adopted to achieve a certain metallurgical bonding between the copper-clad aluminum wire and the aluminium clad wire and to strengthen the two metals. The interface shear strength ensures the mechanical and electrical properties of the product, and improves the stability of the product.

Copper clad aluminum round wire

Copper clad aluminum flat wire

Copper-clad aluminum (CCA) is composed of aluminum core wire and outer copper layer which is tightly clad. It has the advantages of good conductivity of copper and light weight of aluminum. It is the preferred material for inner conductor of coaxial cable and cable in electrical equipment. The same process cable can be used for pure copper wire.

Production standard:

  1. 1.SJ/T112233-2000 "copper-clad aluminum wire ", American ASTMB566-93 "copper-clad aluminum wire ".
  2. copper-clad aluminum wire can be divided into soft (A) and hard (H) according to mechanical properties, and it can be divided into 10% and 15% according to the volume ratio of copper layer.

A.Copper-clad aluminum flat wire

1.Reference table for allowable deviation of straight line dimension

Diagonal dimension/mm

Permissible deviation

Advanced level

General level

0.5~1.0

0.01

0.02

>1.0~3.0

0.015

0.03

>3.0~6.0

0.02

0.03

>6.0~10.0

0.03

0.05

>10.0~15.0

0.07

0.1

2.Reference table for physical properties of flat wire at room temperature

Volume ratio of cladding layer/%

Subtense distance/mm

Temper

Density(g/cm3)

Tensile strength/MPa

Elongation/%

 

Maximum dc resistivity

(Ω·mm2/m)

 

Volume conductivity is not less than

(%IACS)

20

0.5~15

Hard

3.94

≥160

≥1.0

0.02596

66.4

 

0.5~15

Soft

 

≥110

≥12

0.0255

67.6

25

0.5~15

Hard

4.25

≥170

≥1.5

0.02548

67.7

 

0.5~15

Soft

 

≥115

≥13

0.02498

69

30

0.5~15

Hard

4.56

≥180

≥2

0.02477

69.6

 

0.5~15

Soft

 

≥120

≥14

0.02424

71.1


3.weight reference table of CCA flat wire

Width of flat wire/mm

Coil weight of flat wire /kg

Standard coil

Lighter coil

0.5~1.0

10±1

8±1

>1.0~3.0

22±2

20±2

>3.0~5.0

25±3、40±4

22±3、30±3

>5.0

70±5

50±5

B.Copper-clad aluminum round wire

Reference table for allowable deviation of CCA round wire

Diameter/mm

 

Optimize diameter size

/mm

Acceptable tolerance

>1.0~8.25

2、3、4、5、6、7、8

±1%d

1.Reference sheet for tensile strength and elongation at break of CCA round wire

Standard diameter/mm

Tensile strength/MPa

Elongation/%

Hard Y

Soft R

Hard Y

Soft R

min

max

min

max

1.00~2.05

207

138

1

15

2.06~2.30

200

138

1

15

2.31~2.59

193

138

1

15

2.60~2.91

186

138

1

15

2.92~3.26

179

138

1

15

3.27~3.67

172

138

1.5

15

3.68~4.12

166

138

1.5

15

4.13~4.62

159

138

1.5

15

4.63~5.19

152

138

1.5

15

5.20~5.83

138

138

1.5

15

5.84~6.54

124

138

1.5

15

6.55~8.25

110

138

1.5

15

2.Reference table for maximum DC resistivity and volume conductivity of CCA round wire

 

Cladding volume ratio

/%

Temper

Density(g/cm3)

Maximum DC resistivity(Ω·mm2/m)

Volume conductivity is not less than(%IACS)

20

Hard

3.94

0.02596

66.4

 

Soft

 

0.0255

67.6

25

Hard

4.25

0.02548

67.7

 

Soft

 

0.02498

69

30

Hard

4.56

0.02477

69.6

 

Soft

 

0.02424

71.1

Product performance:

  1. Unique composite properties, Copper-aluminum interface for metallurgical bonding, high performance products, with copper conductivity and aluminum density characteristics of small;
  2. High interfacial bonding strength, excellent electrical conductivity and excellent mechanical properties.
  3. The thickness of copper layer is large and adjustable, which is suitable for transmitting large current.
  4. Lightweight, easy to transport and install.
  5. Obvious economic benefits: saving copper resources and reducing production costs.

The density of copper clad aluminum wire is only 37-40% of that of pure copper wire, and its length is 2.45-2.65 times of that of pure copper wire with the same mass and diameter, and its tensile strength is 1.6-2 times higher than that of pure copper wire. Therefore, using wire length or strength to produce wire and cable will greatly reduce the production cost.

Application of copper-clad aluminum wire :

  1. Electrical equipment manufacturing: mainly including low-voltage, medium-voltage, high-voltage distribution, bus system, rectifier, motor winding, etc.
  2. Bimetal connectors in crane track supply system, vacuum switchgear, generator set, substation, aluminum foil winding transformer, etc.
  3. wind power, solar photovoltaic field: mainly including reactors, inverters and so on;
  4. railways, aerospace, high-speed ferry and so on.
  5. high frequency signal transmission
  6. preferred conductor material for cable TV coaxial cable
  7. 7.50 RF cable, flexible RF coaxial cable inner conductor material
  8. leakage conductor inner conductor material
  9. computer power and other data cable inner conductor materials
  10. internal conductor material for micro coaxial cable
  11. power transmission
  12. stranded wire
  13. conductor materials for power cables
  14. control cable inner conductor
  15. special conductors for automobiles and locomotives
  16. building materials without wires and conductors
  17. conductor material such as busbar.
  18. fuse
  19. RF shielding network.

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  • info@chalcoaluminum.com
  • 126#4 Building A,No.89 Science Avenue,National HI-Tech Industry Development Zone,Zhengzhou,Henan
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