Каталог стандартов
+7 (495) 223-46-76
+7 (812) 309-78-59
inform@normdocs.ru
This specification covers silver-coated, soft or annealed, round copper wire, intended for use in electrical equipment. The silver-coated wires are classified according to the total weight of the coated wires, namely; Class A, B, C, D, and E. Tensile strength test, resistivity test, weight of coating, and dimensional measurements shall be performed to conform to the requirements specified.
Область применения1.1 This specification covers silver-coated, soft or annealed, round copper wire, intended for use in electrical equipment, as follows:
1.1.1 Class A—Wire whose silver coating is at least 1.25 % of the total weight of the coated wire.
1.1.2 Class B—Wire whose silver coating is at least 2.50 % of the total weight of the coated wire.
1.1.3 Class C—Wire whose silver coating is at least 4.00 % of the total weight of the coated wire.
1.1.4 Class D—Wire whose silver coating is at least 6.10 % of the total weight of the coated wire.
1.1.5 Class E—Wire whose silver coating is at least 10.00 % of the total weight of the coated wire.
1.2 Silver-coated wire having different minimum percentages of silver by weight may be obtained by mutual agreement between the manufacturer and the purchaser. For information purposes the thickness of coating in microinches provided by the percentages listed above is shown in Table 1 (Explanatory Note 1).
TABLE 1 Tensile RequirementsDiameter,
in.
Area at 20°C
Elongation
in 10 in.,
min, %
Thickness of Coating, μin. (For Information Only)
cmils
in.2
Class A, 1.25
% Silver
Class B, 2.50
% Silver
Class C, 4.00
% Silver
Class D, 6.10
% Silver
Class E, 10.00
% Silver
0.1285
16 510
0.01297
30
340
680
1 090
1 659
2 720
0.1144
13 090
0.01028
30
303
605
970
1 477
2 422
0.1019
10 380
0.008155
25
270
539
864
1 316
2 157
0.0907
8 230
0.00646
25
240
480
768
1 171
1 941
0.0808
6 530
0.00513
25
214
428
684
1 043
1 710
0.0720
5 180
0.00407
25
190
381
610
930
1 524
0.0641
4 110
0.00323
25
170
339
542
828
1 357
0.0571
3 260
0.00256
25
151
302
483
737
1 209
0.0508
2 580
0.00203
25
134
269
430
656
1 075
0.0453
2 050
0.00161
25
120
240
383
585
959
0.0403
1 620
0.00128
25
107
213
341
520
853
0.0359
1 290
0.00101
25
95
190
304
464
760
0.0320
1 020
0.000804
25
85
169
270
413
677
0.0285
812
0.000638
25
75
151
241
368
603
0.0253
640
0.000503
25
67
134
214
327
536
0.0226
511
0.000401
25
60
120
191
292
478
0.0201
404
0.00317
20
53
106
170
260
425
0.0179
320
0.000252
20
47
95
151
231
379
0.0159
253
0.000199
20
42
84
135
205
337
0.0142
202
0.000158
20
...
75
120
183
301
0.0126
159
0.000125
20
...
67
107
163
267
0.0113
128
0.000100
20
...
60
96
146
239
0.0100
100
0.0000785
20
...
53
85
129
212
0.0089
79.2
0.0000622
15
...
47
75
115
188
0.0080
64.0
0.0000503
15
...
42
68
103
169
0.0071
50.4
0.0000396
15
...
...
60
92
150
0.0063
39.7
0.0000312
15
...
...
53
81
133
0.0056
31.4
0.0000246
15
...
...
47
72
119
0.0050
25.0
0.0000196
15
...
...
42
65
106
0.0045
20.2
0.0000159
15
...
...
...
58
95
0.0040
16.0
0.0000126
15
...
...
...
52
85
0.0035
12.2
0.00000962
15
...
...
...
45
74
0.0031
9.61
0.00000755
15
...
...
...
40
66
0.0028
7.84
0.00000616
10
...
...
...
...
59
0.0025
6.25
0.00000491
10
...
...
...
...
53
0.0022
0.0020
4.84
4.00
0.00000380
0.00000314
10
10
...
...
...
...
...
...
...
...
47
42
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3.1 Exceptions—The SI values for density, resistivity, and volume are to be regarded as standard.
1.4 The following precautionary caveat pertains only to the test method section of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements see 8.4.1.2 and Explanatory Note 2.