Single Build
HSM Wire International,
Inc.
Heavy Build
Ph: 330-244-8501 Fax: 330-244-8561
www.hsmwire.com
Ultra Fine Copper Wire Sizes AWG 42.5 - 58 Chart (Inches)
Technical Details = inches for Copper Magnet Wire. All tolerances based on NEMA MW 1000. Based upon copper conductivity of 100% I.A.C.S.
Actual values may be up to 102% I.A.C.S. The following information is intended for a guideline only, actual result may vary; please consider all
data before implementing into any project.
AWG
42.5
43
43.5
44
44.5
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Bare Copper
Diameter (Inches)
MIN
NOM
.0023
.0024
.0021
.0022
.0020
.0021
.0019
.0020
.0018
.0019
.0017
.00176
.0015
.0016
.0014
.0014
.0012
.0012
.0011
.0011
.0010
.0010
.0009
.0009
.0008
.0008
.0007
.0007
.0006
.0006
.0005
.00055
.00047
.0005
.0004
.00042
.00036
.00039
MAX
.0025
.0024
.0022
.0021
.0020
.00183
.00164
.00146
.00129
.00116
.00103
.00092
.00081
.00073
.00065
.00057
.00051
.00045
.00040
Resistance* (ohms/1,000ft)
MIN
NOM
MAX
1,659
1,800
1,960
1,960
2,142
2,351
2,142
2,351
2,592
2,351
2,592
2,872
2,592
2,872
3,200
3,080
3,348
3,616
3,870
4,207
4,544
4,868
5,291
5,714
6,205
6,745
7,285
7,744
8,417
9,090
9,734
10,580
11,430
12,320
13,390
14,460
15,690
17,050
18,410
19,480
21,170
22,860
24,820
26,980
29,140
31,540
34,280
37,020
39,730
43,190
46,650
49,735
54,060
58,385
62,570
68,011
73,452
Single Build
AWG
42.5
43
43.5
44
44.5
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Min.
Increase
(in)
.00020
.00020
.00010
.00010
.00010
.00010
.00010
.00010
.00010
.00010
.00010
.00010
.00010
.00005
.00005
.00005
.00005
.00004
.00004
Heavy Build
Overall Diameter
(inches)
MIN
NOM
MAX
.0025
.0023
.0021
.0020
.0019
.00179
.00161
.00145
.00129
.00117
.00105
.00095
.00085
.00072
.00065
.00058
.00052
.00046
.00041
.0026
.0024
.0023
.0022
.0021
.00192
.00173
.00158
.00140
.00124
.00113
.00103
.00093
.00079
.00070
.00064
.00059
.00051
.00046
.0028
.0026
.0025
.0024
.0023
.0021
.0019
.0017
.0015
.0013
.0012
.0011
.0010
.0009
.0008
.0007
.00065
.00056
.00051
Min.
Increase
(in)
.0004
.0004
.0004
.0004
.0004
.0003
.0003
.0003
.0002
.0002
.0002
.0002
.0001
.0001
.0001
.0001
.0001
-
Overall Diameter (inches)
MIN
NOM
MAX
.0027
.0025
.0024
.0023
.0022
.00199
.00181
.00165
.00139
.00127
.00115
.00105
.00095
.0008
.00073
.00066
.0006
-
.0029
.0027
.0026
.0025
.024
.00215
.00196
.00178
.00155
.00139
.00128
.00117
.00105
.00092
.00084
.00077
.00071
-
.0031
.0029
.0028
.0027
.0026
.0023
.0021
.0019
.0017
.0015
.0014
.00129
.00115
.00103
.00095
.00087
.00081
-
AWG
42.5
43
43.5
44
44.5
45
46
47
48
49
50
51
52
23
54
55
56
57
58
Area
Sq. mm
NOM
5.75
4.84
4.41
4.00
3.61
3.10
2.47
1.96
1.54
1.23
.980
.775
.608
.490
.384
.303
.240
.192
.152
Single Build
Recommended
Winding
Tensions
(grams)
Typical
Elongation
%
30
26
24
22
19
17
14
11
9
7
5
4
3
2.5
2
1.5
1
0.8
0.6
23
22
21
21
20
20
20
19
18
17
16
16
14
12
11
10
9
8
7
Lbs/1000ft
ft/lb
ohms/lb
wires/sq. in
ohms/cu. in
NOM
NOM
NOM
NOM
NOM
.0180
.0151
.0138
.0125
.0113
.00965
.00768
.00604
.00487
.00385
.00308
.00246
.00196
.00153
.00121
.00097
.00078
.00061
.00049
55,635
66,092
71,462
79,798
88,308
103,608
130,200
165,200
205,300
259,700
324,700
406,500
510,200
653,600
826,400
1,032,000
1,283,700
1,636,700
2,040,800
100,172
141,169
170,408
206,897
253,696
-
147,928
176,611
189,035
206,897
253,696
271,441
334,084
400,689
509,769
649,636
783,225
942,841
1,155,625
1,602,756
2,042,041
2,439,844
2,837,025
4,000,000
4,726,276
22,195
31,536
37,046
44,641
54,287
75,683
117,138
176,621
286,777
456,176
690,474
1,051,779
1,642,711
2,826,737
4,588,435
6,974,283
10,339,461
-
Copyright © 2013 HSM Wire International, Inc.
Rev: 2.7.18.13