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This specification covers nickel-coated, round, copper-clad steel wire for electronic applications. The nickel-coated wire shall consist of the basis wire coated with nickel. Tensile strength and elongation of the nickel-coated wire shall conform to the specified requirements for the applicable size and class of copper-clad steel wire. The electrical resistivity shall not exceed the values specified. Continuity, adherence, and mass of the coating shall be determined. Necessary joints in the wire and rod prior to final coating and drawing shall be made.
Область применения1.1 This specification covers nickel-coated, round, copper-clad steel wire for electronic application.
1.2 Nickel coatings in mass percentages of the total mass of the coated wire are as follows: 2, 4, 7, 10, and 27 %. Nickel-coated wire having different minimum mass percentages of nickel 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.
TABLE 1 Nickel Mass Percent and Thickness of CoatingDiameter
Cross-Sectional Area at 20°C
Thickness of Nickel,μ in.
(for information only)
in.
mm
cmil
in.2
mm2
2.0 %
4.0 %
7.0 %
10.0 %
27.0 %
0.0720
1.829
5 180
0.00407
2.63
334
637
1 181
1 703
4 892
0.0641
1.628
4 110
0.00323
2.08
298
566
1 050
1 514
4 349
0.0571
1.450
3 260
0.00256
1.65
266
505
936
1 350
3 880
0.0508
1.290
2 580
0.00203
1.31
236
450
833
1 200
3 452
0.0453
1.151
2 050
0.00161
1.04
211
401
743
1 071
3 077
0.0403
1.024
1 620
0.00128
0.823
202
357
661
953
2 738
0.0359
0.912
1 290
0.00101
0.653
167
318
589
849
2 439
0.0320
0.813
1 020
0.000804
0.519
149
283
525
757
2 174
0.0285
0.724
812
0.000638
0.412
133
252
467
686
1 937
0.0253
0.643
640
0.000503
0.324
118
224
415
598
1 719
0.0226
0.574
511
0.000401
0.259
105
200
371
535
1 536
0.0201
0.511
404
0.000317
0.205
94
178
330
475
1 366
0.0179
0.455
320
0.000252
0.162
83
158
294
423
1 216
0.0159
0.404
253
0.000199
0.128
74
141
261
376
1 080
0.0142
0.361
202
0.000158
0.102
66
126
233
336
965
0.0126
0.320
159
0.000125
0.0804
59
112
207
298
856
0.0113
0.287
128
0.000100
0.0647
53
100
185
267
768
0.0100
0.254
100
0.0000785
0.0507
47
89
164
237
680
0.0089
0.226
79.2
0.0000622
0.0401
41
80
146
211
605
0.0080
0.203
64.0
0.0000503
0.0324
...
71
131
189
544
0.0071
0.180
50.4
0.0000396
0.0255
...
63
116
168
482
0.0063
0.160
39.7
0.0000312
0.0201
...
56
103
149
428
0.0056
0.142
31.4
0.0000246
0.0159
...
50
92
132
381
0.0050
0.127
25.0
0.0000196
0.0127
...
44
82
118
340
0.0045
0.114
20.2
0.0000159
0.0103
...
40
74
106
306
0.0040
0.102
16.0
0.0000126
0.00811
...
...
66
95
272
0.0035
0.089
12.2
0.00000962
0.00621
...
...
57
83
238
0.0031
0.079
9.61
0.00000755
0.00487
...
...
51
73
211
1.3 Four classes of nickel-coated, copper-clad steel wire are covered as follows:
1.3.1 Class N30HS—Nominal 30 % conductivity, hard drawn.
1.3.2 Class N30A—Nominal 30 % conductivity, annealed.
1.3.3 Class N40HS—Nominal 40 % conductivity, hard drawn.
1.3.4 Class N40A—Nominal 40 % conductivity, annealed.
1.4 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.
1.4.1 Exception—The SI values for resistivity are to be regarded as standard.
1.5 The following safety hazards caveat pertains only to the test method described in 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. (Warning—Consideration should be given to toxicity and flammability when selecting solvent cleaners.)