| Physical property
of Al-in-Cu wire
| Specification |
Copper
layer volume ratio (%) |
Copper
layer weight ratio (%) |
Length
ratio (%) |
Density
(g/cm3) |
Max. DC
resistivity Ωmm2/m(20≧) |
Min relative
lead ratio (%ACS) |
| CCA-10% |
8~<13 |
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 |
5.89 |
0.017241 |
100 |
Operation features
High-frequency￣ Toward surface￣ feature of the
conductors.
When the high-frequency signal current go through
the conductor, mainly transfer on the conduct
surface layer, which is called ＾Toward surface￣,
but very little current transfer in the conductor
core, even no electricity current go through.
The electricity current depth collect on the conductor
surface express as δ. For the copper conductor,
normally its penetration depth can calculate with
below formula : δ=67/f1/2(mm), f: frequency (Hz).
The thinnest copper thickness of Al-in-Cu wires
in coaxial cable under 5-100MH signal transfer,
penetration depth as below table:
| Al-in-Cu
wire diameter (mm) |
Thinnest
copper layer thickness (mm) |
Penetration
depth (mm) |
|
| 10A
10H |
15A
15H |
5MHZ |
10MHZ |
15MHZ |
|
| 2.15 |
0.038 |
0.054 |
|
|
|
|
| 2.77 |
0.048 |
0.089 |
0.02996 |
0.02119 |
0.0067 |
|
| 3.15 |
0.055 |
0.079 |
|
|
|
|
Property comparison between
Al-in-Cu wire and pure copper wire
| Data
|
Hengjiu
Al-in-Cu wire CCA-15 |
Pure
copper wire |
|
| Hard |
Soft |
Hard |
Soft |
|
|
| Density
(g/cm3) |
3.63 |
8.89 |
|
|
| specific
conductance Ω (mm2/m) |
0.02676 |
0.017421 |
|
|
| Length
ratio |
2.5 |
1 |
|
|
| Extension
ratio (%) |
>1.0 |
>15 |
0.2-0.5 |
30-45 |
|
|
The dual-metal wires comparison
between the cladding welding process and electro-plating
process
| Data |
Cladding
welding process |
Electro-plating
process |
| Copper
layer material |
Select
high-purity material, close-grained copper
layer |
Loose
copper layer, waste contained |
| Combination
method of two metals |
The copper
layer and the wire core achieve metallurgy
combination, durable |
The copper
ion adhere to the core wire surface, not combined
well, easy to peel off |
| Copper
layer evenness |
the copper
layer is arranged alone the cycle and longitudinal
evenly, good concentricity. |
Uneven
thickness of copper layer |
| Environment
pollution |
No |
The electro-plating
liquid pollutes the environment severely,
also harm to human bodies, will be forbidden
to produce gradually |
Property comparison of
Al-in-Cu wire and pure copper wire
| CATV coaxial
cable common models |
Inner
conductor |
Wire diameter
(mm) |
| |
|
Nominal |
Min |
Max |
| HJWV-75-5 |
Al-in-St
wire |
1 |
0.98 |
1.02 |
| HJWV-75-7
HJWY-75-7 |
Al-in-St
wire |
1.66 |
1.64 |
1.68 |
| HJWV-75-9
HJWLY-75-9 HJWY-75-9 |
Al-in-Cu
wire |
2.15 |
2.12 |
2.18 |
| HJWLY-75-12 |
Al-in-Cu
wire |
2.77 |
2.74 |
2.8 |
|
