Copper Clad Aluminum and Other Clad Metals
Clad metals are two distinct metals or alloys that are metallurgically
bonded together so that the optimum combination of functional
properties is achieved. Copper Clad Aluminum (CCA) is an electrical
conductor with a sleeve of copper bonded to a solid aluminum core. The
composite wire is uniquely suited to electrical applications where weight to
conductivity issues are critical. The copper makes up either 10% or 15% of
the cross sectional area of the wire and assures excellent solderability.
AC conductivity at frequencies greater than 5 MHz is equal to solid copper.
CCA is manufactured in accordance with the requirements of ASTM B-566.
Film insulations are available on CCA wire. For insulation data, see pages
2 and 3.
SIZE DIAMETER
(AWG) (INCHES)
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
.0641
.0571
.0508
.0453
.0403
.0359
.0320
.0285
.0253
.0226
.0201
.0179
.0159
.0142
.0126
.0113
.0100
.0089
.0080
.0071
.0063
.0056
.0050
.0045
.0040
.0035
.0031
AREA (CIR. MILS)
4109
3260
2581
2052
1624
1289
1024
812.3
640.1
510.8
404.0
320.4
252.8
201.6
158.8
127.7
100.0
79.21
64.00
50.41
39.69
31.36
25.00
20.25
16.00
12.25
9.610
FEET PER POUND
15% CCA
10% CCA
215
270
342
430
542
684
862
1087
1378
1728
2184
2750
3498
4378
5554
6915
8811
11134
13777
17488
22214
28035
35244
43521
55002
72090
91848
197
247
314
394
497
627
791
997
1264
1585
2004
2524
3210
4018
5096
6346
8085
10216
12642
16048
20384
25725
32340
39935
50470
66150
84280
Typical Physical Properties
DC Conductivity
% Copper by volume
% Copper by weight
Density
Tensile strength, annealed
Tensile strength, hard drawn
Elongation, annealed
Elongation, hard drawn
15%CCA
64.4% min IACS
13-17%
34% nom
.131 lb/cu in
20-25 kPSI
16-30 kPSI
5-15% min
1% min
(Tensile and elongation values are size dependent)
POUNDS PER 1000 FT.
15% CCA
10% CCA
10%CCA
62.9% min IACS
8-12%
27% nom
.120 lb/cu in
20-25 kPSI
16-30 kPSI
5-15% min
1% min
4.64
3.69
2.92
2.32
1.84
1.46
1.16
.920
.726
.580
.456
.363
.286
.228
.180
.145
.113
.0896
.0726
.0572
.0449
.0355
.0283
.0229
.0181
.0139
.0109
5.06
4.03
3.19
2.53
2.01
1.59
1.26
1.00
.792
.632
.498
.396
.312
.249
.196
.158
.124
.0979
.0792
.0624
.0490
.0387
.0309
.0250
.0196
.0151
.0119
OHMS PER 1000 FT. AT 20˚C SIZE
15% CCA (AWG)
10% CCA
3.91
4.93
6.23
7.83
9.90
12.5
15.7
19.8
25.1
31.5
39.8
50.2
63.6
79.7
101
126
161
203
251
319
405
513
643
794
1000
1310
1670
3.79
4.78
6.05
7.60
9.61
12.1
15.2
19.2
24.4
30.5
38.6
48.7
61.7
77.3
98.2
122
156
197
244
310
390
498
624
770
975
1280
1620
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Other Clad Metals
WIRE
CORE/CLADDING
% IACS
CCS 30%
Low carbon Steel/Copper
30%
CCS 40%
Low carbon Steel/Copper
40%
NCC 27%
Copper/Pure Nickel
70% nom.
Nickel-Iron Alloy/Copper
Approx. 17%
Dumet
KEY ATTRIBUTES
High strength,
medium conductivity
High strength,
medium conductivity
Combines high conductivity and oxidation
resistance at elevated temperatures
Thermal expansion equal to that of glass
TYPICAL APPLICATIONS
Drop wire,
grounding conductor
High strength conductors,
electronic wire leads
High temperature electrical conductors,
leadwire to heating elements
Electronic wire leads
MWS Wire Industries, 31200 Cedar Valley Drive, Westlake Village, CA 91362 • Phone: 818-991-8553 • Fax: 818-706-0911 • www.mwswire.com
Print Revision May 2016
29