Copper Clad Steel
Copper Clad Steel
Copper Clad Steel
Wire
3-Wire Strand
7-Wire Strand
19-Wire Strand
Consisting of a copper cladding metallurgically bonded to a steel core, Copperweld CCS wire effectively combines
the strength of steel with the conductivity and corrosion resistance of copper. Standard copper cladding thicknesses result in a composite
conductivity of 30% or 40% IACS. Copperweld wire is available with two types of steel: a strong, high carbon, steel for the high-strength (HS)
and extra-high-strength (EHS) grades and a low carbon (LC) steel for special applications.
Copperweld strand is concentrically stranded cable of one or more layers with left-hand lay in the outer layer unless otherwise specified. In
any strand, the individual wires are of the same size.
Copperweld hard-drawn wire and strand offers tensile strengths from 80000 - 270000 psi [5625 - 18983 kgf/cm 2]. For applications requiring
greater flexibility, Copperweld wire and strand are also available in an annealed state.
NOTE: Properties noted in these data sheets are typical values for standard applications. If your application
requires performance values beyond those noted, please contact
Copperwelds Engineering Support Center at
engineering@copperweld.com or +1.615.377.4200. Material selection, varying composition and processing conditions all provide
flexibility in how Copperweld can deliver exactly the product you need. Bimetallic conductors from Copperweld offer many distinct advantages,
and our engineering team works in concert with our clients to determine the proper components for the stringent requirements of their products.
Specifications:
ASTM B-227 Hard Drawn Copper-Clad Steel Wire
Diameter
High Strength
(inch)
(mm)
40%
COND
0.3249
8.25
3065
Extra High
Strength
30%
COND
30%
COND
3174
4561
Weight (kg/km)
40%
COND
30%
COND
440.5
435.9
Nominal DC
Resistance
at 20oC (/km)
Cross Section
Area
40%
COND
30%
COND
(cmil)
(mm2)
0.8058
1.0744
105560
53.49
0.2893
7.35
2633
2835
4021
349.2
345.6
1.0164
1.3551
83694
42.41
0.2576
6.54
2225
2408
3326
276.9
274.0
1.2819
1.7092
66358
33.62
0.2294
5.83
1855
2001
2747
219.6
217.3
1.6164
2.1552
52624
26.67
0.2043
5.19
1558
1731
2056
174.2
172.3
2.0380
2.7174
41738
21.15
0.1819
4.62
1292
1430
1721
138.1
136.6
2.5709
3.4278
33088
16.77
0.1620
4.11
1070
1179
1429
109.5
108.4
3.2413
4.3217
26244
13.30
0.1443
3.67
885
972
1180
86.89
85.98
4.0852
5.4469
20822
10.55
0.1285
3.26
731
799
970
68.90
68.18
5.1516
6.8687
16512
8.37
0.1144
2.91
601
656
787
54.61
54.04
6.4997
8.6663
13087
6.63
10
0.1019
2.59
498
542
642
43.33
42.88
8.1921
10.923
10384
5.26
12
0.0808
2.05
273
274
408
27.24
26.96
13.029
17.373
6529
3.31
NOTE:
Coefficient of Linear Expansion: 1.3 x 10-5/oC
Temperature Coefficient of Resistance: 4.05 x 10-3/oC
Modulus of Elasticity: Wire, 165.5 GPa
www.copperweld.com
Diameter
High Strength
Weight (kg/km)
Extra High
Strength
30%
COND
30%
COND
40%
COND
30%
COND
(inch)
(mm)
40%
COND
13
0.0720
1.83
225
230
324
21.63
14
0.0641
1.63
186
182
257
15
0.0571
1.45
136
145
204
16
0.0508
1.29
112
114
17
0.0453
1.15
93
91
18
0.0403
1.02
77
19
0.0359
0.91
20
0.0320
0.81
21
0.0285
22
23
Nominal DC
Resistance
at 20oC (/km)
Cross
Section Area
40%
COND
30%
COND
(cmil)
(mm2)
21.41
16.41
21.88
5184
2.63
17.15
16.97
20.70
27.60
4109
2.08
13.60
13.46
26.09
34.79
3260
1.65
161
10.77
10.66
32.96
43.95
2581
1.31
128
8.563
8.473
41.45
55.27
2052
1.04
74
102
6.777
6.706
52.38
69.84
1624
0.82
60
59
81
5.378
5.322
66.00
88.00
1289
0.65
50
48
64
4.273
4.228
83.09
110.8
1024
0.52
0.72
40
36
70
3.389
3.354
104.7
139.6
812
0.41
0.0253
0.64
31
29
55
2.671
2.643
132.9
177.2
640
0.32
0.0226
0.57
25
23
45
2.131
2.109
166.5
222.1
511
0.26
Bare Copperweld stranded cable, high strength and extra high strength
physical and electrical characteristics
(METRIC UNITS)
Min Breaking Loads (kgf)
Conductor
Size
AWG
Diameter
High Strength
30%
COND
Extra High
Strength
30%
COND
Weight (kg/km)
40%
COND
30%
COND
(inch)
(mm)
40%
COND
19 No. 5
0.910
23.10
22098
24448
29436
2660
19 No. 6
0.810
20.57
18305
20167
24433
19 No. 7
0.722
18.33
15141
16614
20182
19 No. 8
0.643
16.32
12496
13667
16591
NOMINAL
DC Resistance
at 20oC (/km)
Cross
Section Area
40%
COND
30%
COND
(cmil)
(mm2)
2632
0.1372
0.1829
628665
318.55
2110
2088
0.1730
0.2306
498636
252.66
1674
1656
0.2180
0.2907
395627
200.47
1327
1314
0.2749
0.3666
313733
158.97
19-Wire Strand
19 No. 9
0.572
14.53
10285
11216
13465
1052
1041
0.3469
0.4625
248660
126.00
19 No. 10
0.510
12.94
8509
9269
10983
834.8
826.0
0.4372
0.5829
197289
99.97
7 No. 4
0.613
15.57
9816
10908
12951
1231
1218
0.2941
0.3921
292169
148.04
7 No. 5
0.546
13.86
8141
9007
10845
976.1
965.9
0.3709
0.4946
231613
117.36
7 No. 6
0.486
12.34
6744
7430
9002
774.2
766.1
0.4677
0.6236
183708
93.09
7 No. 7
0.433
11.00
5578
6121
7436
614.3
607.9
0.5894
0.7859
145757
73.86
7 No. 8
0.386
9.79
4604
5035
6112
487.1
482.0
0.7433
0.9911
115586
58.57
7-Wire Strand
7 No. 9
0.343
8.72
3789
4132
4961
386.1
382.1
0.9378
1.2504
91612
46.42
7 No. 10
0.306
7.76
3135
3415
4046
306.3
303.1
1.1820
1.5760
72685
36.83
7 No. 12
0.242
6.16
1717
1723
2572
192.6
190.6
1.8799
2.5066
45700
23.16
3-Wire Strand
3 No. 4
0.440
11.18
4441
4934
5859
526.7
521.2
0.6848
0.9130
125215
63.45
3 No. 5
0.392
9.96
3683
4075
4906
417.5
413.2
0.8638
1.1517
99263
50.30
3 No. 6
0.349
8.87
3051
3361
4072
331.2
327.7
1.0891
1.4521
78732
39.89
3 No. 7
0.311
7.90
2523
2769
3364
262.7
260.0
1.3726
1.8302
62467
31.65
3 No. 8
0.277
7.03
2083
2278
2765
208.4
206.2
1.7309
2.3079
49537
25.10
3 No. 9
0.247
6.26
1714
1869
2244
165.1
163.4
2.1839
2.9119
39262
19.89
3 No. 10
0.220
5.58
1418
1545
1831
131.0
129.7
2.7526
3.6701
31151
15.78
3 No. 12
0.174
4.42
777
780
1163
82.38
81.52
4.3779
5.8371
19586
9.92
Breaking load of 7-wire and 19-wire Copperweld strands are taken as 90% of the sum of the breaking
loads of the individual wires; breaking load of 3-wire Copperweld strand is taken as 95% of the sum of
the breaking loads of the individual wires used in the manufacturing of the strand.
NOTE:
Modulus of Elasticity: Strand, 158.6 GPa
Coefficient of Linear Expansion: 1.3 x 10-5/oC
Temperature Coefficient of Resistance: 4.05 x 10-3/oC
Diameter
(inch)
High Strength
40%
COND
Extra High
Strength
30%
COND
30%
COND
Weight (lbs/kft)
40%
COND
30%
COND
Nominal DC
Resistance
at 68oF (/kft)
40%
COND
Cross
Section Area
30%
COND
(cmil)
(in2)
0.3249
6757
6998
10055
296.0
292.9
0.2456
0.3275
105560
0.08291
0.2893
5804
6250
8865
234.7
232.2
0.3098
0.4130
83694
0.06573
0.2576
4905
5309
7332
186.1
184.1
0.3907
0.5210
66358
0.05212
0.2294
4090
4411
6055
147.6
146.0
0.4927
0.6569
52624
0.04133
0.2043
3435
3817
4532
117.0
115.8
0.6212
0.8283
41738
0.03278
0.1819
2849
3152
3795
92.77
91.81
0.7836
1.0448
33088
0.02599
0.1620
2360
2600
3150
73.58
72.82
0.9879
1.3173
26244
0.02061
0.1443
1952
2142
2602
58.38
57.78
1.2452
1.6602
20822
0.01635
0.1285
1611
1762
2139
46.30
45.82
1.5702
2.0936
16512
0.01297
0.1144
1326
1446
1736
36.70
36.31
1.9811
2.6415
13087
0.01028
10
0.1019
1097
1195
1416
29.11
28.81
2.4970
3.3293
10384
0.00816
12
0.0808
601
603
900
18.31
18.11
3.9713
5.2951
6529
0.00513
13
0.0720
497
507
714
14.54
14.38
5.0014
6.6686
5184
0.00407
14
0.0641
410
402
566
11.52
11.40
6.3102
8.4136
4109
0.00323
15
0.0571
300
319
449
9.142
9.047
7.9522
10.603
3260
0.00256
16
0.0508
247
252
356
7.236
7.160
10.047
13.396
2581
0.00203
17
0.0453
205
201
283
5.754
5.694
12.635
16.846
2052
0.00161
18
0.0403
169
163
224
4.554
4.506
15.964
21.286
1624
0.00128
19
0.0359
133
129
178
3.614
3.576
20.117
26.823
1289
0.00101
20
0.0320
110
106
141
2.871
2.841
25.320
33.760
1024
0.00080
21
0.0285
88
79
154
2.277
2.254
31.921
42.561
812
0.00064
22
0.0253
69
63
121
1.795
1.776
40.506
54.008
640
0.00050
23
0.0226
55
50
99
1.432
1.417
50.763
67.684
511
0.00040
24
0.0201
46
40
79
1.133
1.121
64.175
85.567
404
0.00032
NOTE:
Coefficient of Linear Expansion: 7.2 x 10-6/oF
Temperature Coefficient of Resistance: 2.1 x 10-3/oF
Modulus of Elasticity: Wire, 24 x 106 psi
Bare Copperweld stranded cable, high strength and extra high strength
physical and electrical characteristics
(US/IMPERIAL UNITS)
Min Breaking Loads (lbf)
Conductor
Size
AWG
Diameter
(inch)
High Strength
40%
COND
30%
COND
Weight (lbs/kft)
Extra High
Strength
40%
COND
30%
COND
30%
COND
NOMINAL
DC Resistance
at 68oF (/kft)
Cross
Section Area
40%
COND
30%
COND
(cmil)
(in2)
19-Wire Strand
19 No. 5
0.910
48718
53899
64895
1787
1769
0.0418
0.0558
628665
0.4938
19 No. 6
0.810
40356
44460
53865
1418
1403
0.0527
0.0703
498636
0.3916
19 No. 7
0.722
33379
36628
44494
1125
1113
0.0665
0.0886
395627
0.3107
19 No. 8
0.643
27548
30130
36577
892.0
882.7
0.0838
0.1117
313733
0.2464
19 No. 9
0.572
22675
24727
29686
707.0
699.6
0.1057
0.1410
248660
0.1953
19 No. 10
0.510
18759
20435
24214
560.9
555.1
0.1333
0.1777
197289
0.1550
7-Wire Strand
7 No. 4
0.613
21641
24047
28552
827.4
818.8
0.0896
0.1195
292169
0.2295
7 No. 5
0.546
17949
19858
23909
655.9
649.1
0.1131
0.1507
231613
0.1819
7 No. 6
0.486
14868
16380
19845
520.2
514.8
0.1425
0.1901
183708
0.1443
7 No. 7
0.433
12298
13495
16393
412.8
408.5
0.1797
0.2395
145757
0.1145
7 No. 8
0.386
10149
11101
13476
327.3
323.9
0.2266
0.3021
115586
0.0908
7 No. 9
0.343
8354
9110
10937
259.4
256.7
0.2858
0.3811
91612
0.0720
7 No. 10
0.306
6911
7529
8921
205.8
203.7
0.3603
0.4804
72685
0.0571
7 No. 12
0.242
3786
3799
5670
129.4
128.1
0.5730
0.7640
45700
0.0359
3-Wire Strand
3 No. 4
0.440
9790
10878
12916
353.9
350.2
0.2087
0.2783
125215
0.0983
3 No. 5
0.392
8120
8983
10816
280.5
277.6
0.2633
0.3511
99263
0.0780
3 No. 6
0.349
6726
7410
8978
222.5
220.2
0.3319
0.4426
78732
0.0618
3 No. 7
0.311
5563
6105
7416
176.6
174.7
0.4184
0.5578
62467
0.0491
3 No. 8
0.277
4591
5022
6096
140.0
138.5
0.5276
0.7034
49537
0.0389
3 No. 9
0.247
3779
4121
4948
111.0
109.8
0.6657
0.8875
39262
0.0308
3 No. 10
0.220
3126
3406
4036
88.04
87.12
0.8390
1.1186
31151
0.0245
3 No. 12
0.174
1713
1719
2565
55.36
54.78
1.3344
1.7792
19586
0.0154
Breaking load of 7-wire and 19-wire Copperweld strands are taken as 90% of the sum of
the breaking loads of the individual wires; breaking load of 3-wire Copperweld strand is
taken as 95% of the sum of the breaking loads of the individual wires used in the manufacturing of the strand.
NOTE:
Modulus of Elasticity: Strand, 23 x 106 psi
Coefficient of Linear Expansion: 7.2 X 10-6/oF.
Temperature Coefficient of Resistance: 2.1 x 10-3/oF.
AMERICAS
EUROPE/NORTH AFRICA
SOUTHERN AFRICA
NORTHEAST ASIA/PACIFIC
SOUTHEAST ASIA
MIDDLE EAST
ED5200
REV 01/10