Copper Coated Aluminium Magnesium Wire

Copper-coated aluminiurn magnesium wire, commonly abbreviated as CCAMW or CCAM, is an electrical conductor composed of an inner aluminium core and outer copper coating.

Diameter

0.12 mm - 2.05 mm"

USES

The primary applications of this conductor revolve around weight reduction requirements. These applications include high-quality coils, such as the voice coils in headphones, or portable loud speakers; high frequency coaxial applications; such as RF antennas; CATV distribution cables; and power cables. CCAM is also being used in electrical wiring for buildings. The copper/aluminium construction was adopted to avoid some of the problems with aluminium wire, yet retain some of the cost advantage. CCAM became extremely popular in emerging markets as a cheap replacement for copper category 5e twisted pair cables.

The properties of copper-coated aluminium wire include:

• Lighter than pure copper
• Higher electrical conductivity than pure aluminium
• Higher strength than aluminium
• Better solderability than aluminium, due to the lack of the oxide layer which prevents solder adhesion when soldering bare aluminium.
• Less expensive than a pure copper wire

The skin effect causes alternating current to concentrate on the more-conductive copper coating of the conductor, causing the resistance of the wire to approach that of a pure copper wire at high frequencies, which rnakes the copper-coated alurninium wire a good fit for such applications. The skin effect is also utilized in copper-coated steel wire such as RG-6 coax, which is also commonly used in high frequency applications with high strength requirements.

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Copper Coated Steel Wire, commonly abbreviated as CCS is an electrical conductor composed clan inner mild steel core wire and outer copper coating.

Diameter

0.71 mm - 2.25 mm."

• High intensity: is 2 times than pure copper wire that is if the tensile strength. of pure copper wire is about 215 to 265, then CCS can reach 430 to 530.
• Light weight: lighter 13% than pure copper wire. Under the same wire size and weight, its length is 1.13 times than that of pure copper wire. So buying 1 ton. CCS wire is the same as buying 1.13 tons pure copper wire.
• Saving cost: CCS wire price is just 35% of that of pure copper wire and its appearance quality is the same with pure copper wire.
• Reducing greatly the production cost while guaranteeing the same quality as well as pure copper wire.

• Good corrosion resistance of copper
• High tensile strength of steel
• Much lower impedance at high frequencies than that of steel wire alone

• Inner conductor of terminal CATV coaxial cable
• Conductive cord of user communication cable for double conductor telephones.
• Plug-ins for electronic components.
• Conductive cord of field wires.
• Overhead system for power transmission and telephone lines.
• Overhead-contact systems for railway and Light Rail Transit.
• Braided shield wire of power cable.

Dia (mm)	"Copper Conductivity (%)"	"DC Resistance at 20°C 1 (Ohm/Km)"
0.835	0.26	121
1.05	0.16	124.3
1.05	0.18	110.5
1.05	0.21	94.7
1.85	0.26	24.6
2.25	0.21	20.6

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