Alloy wire for electricity
(Nickel Chrome,Fe-Chrome)
Electric resistance wire
(Copper Nickel,Manganese Nickel)
Pure Nickel Wire
(Wire･Ribbon･Plate･Coil･Foil)
Nickel Alloy
(Wire･Ribbon)
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CN49 (CuNi44)　Copper Nickel Resistance Wire Type 49

Code：CN49 (Copper Nickel Resistance Wire Type 49）

Properties and Applications

Heat-resistant, oxidation-resistant, and can be used up to 400°C. Non-magnetic, small temperature coefficient at room temperature. Good processability such as thin wire and rolling, and good solderability. Used in precision grade AC resistors, precision

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Product Details

JIS JIS Code Electrical
Resistivity
[μΩm]		 Average TCR
［×10-6/℃］
GCN49 C 2532 0.49±0.03 ＊±40
(＊)Reference value
Cuprous
Electromotive
Force
Μv/K
(0~100℃)		 Thermal
Expansion
Coefficient
×10-6/		 Specific Heat
J/g・K
(20℃)		 Thermal
Conductivity
w/m・K		 Density
g/cm3
(20℃		 Melting Point
℃		 Max
Operating
Temperature
℃
-41 13.5 0.41 23 8.9 1240 400
Chemical
Composition		 Mn Ni Cu+Ni+Mn
(％) 0.5～2.5 42～48 ≧99
Alloys Metal type Diameter (mm)
CN49W Wire φ6.00～0.025
CN49R Ribbon t=2.90~0.08 w=40~0.4 (Depends on thickness)
CN49P Plate Please consult
CN49 Coils, foils Please consult

CN49W【Resistance・Length・Weight】

〔Wire〕
Alloys Electrical
Resistivity
(23℃μΩｍ)
CN49W 0.49±0.03
Diameter
(mm)		 Tolerance
(mm)		 Cross section
(mm2)		 Resistance Tolerance
(%)		 Resistance Tolerance
(Ω/ｍ)		 Length
(ｍ/Kg)		 Weight
(ｇ/ｍ)
6.00 ±0.080 28.27 ±5 0.0173 3.97 252
5.50 ±0.063 23.76 ±5 0.0206 4.73 211
5.00 ±0.063 19.64 ±5 0.0250 5.72 175
4.50 ±0.063 15.90 ±5 0.0308 7.06 142
4.00 ±0.063 12.57 ±5 0.0390 8.94 112
3.50 ±0.050 9.621 ±5 0.0509 11.7 85.6
3.20 ±0.050 8.042 ±5 0.0609 14.0 71.6
2.90 ±0.050 6.605 ±5 0.0742 17.0 58.8
2.60 ±0.040 5.309 ±5 0.0923 21.2 47.3
2.30 ±0.040 4.155 ±5 0.118 27.0 37.0
2.00 ±0.040 3.142 ±5 0.156 35.8 28.0
1.80 ±0.040 2.545 ±5 0.193 44.2 22.6
1.60 ±0.032 2.011 ±5 0.244 55.9 17.9
1.50 ±0.032 1.767 ±5 0.277 63.6 15.7
1.40 ±0.032 1.539 ±5 0.318 73.0 13.7
1.30 ±0.032 1.327 ±5 0.369 84.7 11.8
1.20 ±0.025 1.131 ±5 0.433 99.3 10.1
1.10 ±0.025 0.9503 ±6 0.516 118 8.46
1.00 ±0.025 0.7854 ±6 0.624 143 6.99
0.90 ±0.025 0.6362 ±6 0.770 177 5.66
0.85 ±0.025 0.5675 ±6 0.864 198 5.05
0.80 ±0.020 0.5027 ±6 0.975 224 4.47
0.75 ±0.020 0.4418 ±6 1.11 254 3.93
0.70 ±0.020 0.3848 ±6 1.27 292 3.43
0.65 ±0.020 0.3318 ±6 1.48 339 2.95
0.60 ±0.020 0.2827 ±6 1.73 397 2.52
0.55 ±0.016 0.2376 ±7 2.06 473 2.11
0.50 ±0.016 0.1964 ±7 2.50 572 1.75
0.45 ±0.016 0.1590 ±7 3.08 706 1.42
0.40 ±0.016 0.1257 ±7 3.90 894 1.12
0.35 ±0.013 0.09621 ±7 5.09 1168 0.856
0.32 ±0.013 0.08042 ±7 6.09 1397 0.716
0.29 ±0.013 0.06605 ±7 7.42 1701 0.588
0.26 ±0.010 0.05309 ±8 9.23 2116 0.473
0.23 ±0.010 0.04155 ±8 11.8 2704 0.370
0.20 ±0.010 0.03142 ±8 15.6 3577 0.280
0.18 ±0.008 0.02545 ±8 19.3 4415 0.226
0.16 ±0.008 0.02011 ±8 24.4 5588 0.179
0.15 ±0.008 0.01767 ±8 27.7 6358 0.157
0.14 ±0.008 0.01539 ±8 31.8 7299 0.137
0.13 ±0.006 0.01327 ±9 36.9 8465 0.118
0.12 ±0.006 0.01131 ±9 43.3 9935 0.101
0.11 ±0.006 0.009503 ±9 51.6 11823 0.0846
0.10 ±0.006 0.007854 ±9 62.4 14306 0.0699
0.09 ±0.005 0.006362 ±10 77.0 17662 0.0566
0.08 ±0.005 0.005027 ±10 97.5 22353 0.0447
0.07 ±0.005 0.003848 ±10 127 29196 0.0343
0.06 ±0.004 0.002827 ±11 173 39739 0.0252
0.05 ±0.004 0.001964 ±11 250 57224 0.0175
0.04 ±0.003 0.001257 ±12 390 89413 0.0112
0.03 ±0.003 0.0007069 ±12 693 158956 0.00629
0.025 ±0.002 0.0004909 ±13 998 228896 0.00437

CN49W【Temperature Current Characteristics・Diameter・Temperature・Current】

[Unit：Ampere]
Diameter
（mm）		 50
（℃）		 100
（℃）		 150
（℃）		 200
（℃）		 250
（℃）		 300
（℃）		 350
（℃）		 400
（℃）
6.00 23.0 33.0 59.6 75.0 90.2 106 121 138
5.50 20.6 37.9 52.4 66.0 79.3 93.3 107 122
5.00 17.8 32.8 45.5 57.4 68.9 81.0 92.8 105
4.50 15.3 28.2 39.0 49.2 59.1 69.6 79.6 90.5
4.00 13.3 24.6 34.2 42.8 51.2 60.2 68.7 77.8
3.50 11.0 20.3 28.1 35.3 42.2 49.5 56.6 64.1
3.20 9.60 17.7 24.5 31.0 37.0 43.3 49.4 56.2
2.90 8.33 15.8 21.4 26.8 32.0 37.6 42.9 48.7
2.60 7.46 13.7 18.8 23.7 28.2 33.0 37.8 42.5
2.30 6.24 11.4 15.9 19.8 23.7 27.6 31.6 35.5
2.00 5.10 9.36 12.9 16.2 19.3 22.6 25.8 29.1
1.80 4.65 8.46 11.6 14.5 17.3 20.1 22.9 25.9
1.60 3.94 7.17 9.87 12.3 14.6 17.1 19.4 21.8
1.50 3.58 6.52 8.98 11.2 13.3 15.6 17.6 19.9
1.40 3.25 5.91 8.14 10.2 12.1 14.1 16.1 18.0
1.30 3.06 5.57 7.68 9.60 11.3 13.2 15.0 16.7
1.20 2.72 5.00 6.82 8.53 10.1 11.7 13.3 14.9
1.10 2.50 4.42 6.05 7.53 8.93 10.4 11.7 13.2
1.00 2.12 3.88 5.30 6.62 7.85 9.09 10.3 11.6
0.90 1.80 3.30 4.61 5.63 6.67 7.73 8.76 9.82
0.80 1.63 3.00 4.09 5.10 6.03 6.94 7.86 8.55
0.70 1.35 2.49 3.38 4.22 5.01 5.76 6.51 7.09
0.65 1.21 2.24 3.05 3.80 4.50 5.18 5.87 6.38
0.60 1.14 2.12 2.89 3.59 4.24 4.86 5.48 6.07
0.55 1.02 1.88 2.56 3.19 3.76 4.32 4.87 5.38
0.50 0.890 1.66 2.25 2.79 3.30 3.97 4.28 4.72
0.45 0.733 1.43 1.95 2.44 2.87 3.29 3.70 4.10
0.40 0.701 1.30 1.77 2.19 2.58 2.95 3.32 3.68
0.35 0.587 1.09 1.49 1.83 2.17 2.47 2.79 3.09
0.32 0.522 0.969 1.32 1.64 1.93 2.20 2.47 2.75
0.29 0.459 0.851 1.16 1.43 1.69 1.94 2.17 2.40
0.26 0.426 0.785 1.07 1.32 1.55 1.77 1.97 2.19
0.23 0.366 0.672 0.914 1.13 1.33 1.51 1.70 1.87
0.20 0.303 0.557 0.757 0.943 1.10 1.25 1.40 1.50
0.18 0.272 0.503 0.684 0.843 0.987 1.13 1.26 1.42
0.16 0.230 0.427 0.574 0.716 0.863 0.956 1.07 1.20
0.15 0.214 0.396 0.537 0.664 0.776 0.888 0.989 1.11
0.14 0.195 0.360 0.490 0.604 0.706 0.808 0.900 1.01
0.13 0.185 0.337 0.459 0.567 0.662 0.765 0.842 0.927
0.12 0.163 0.302 0.413 0.509 0.594 0.678 0.750 0.832
0.11 0.145 0.270 0.367 0.459 0.528 0.602 0.670 0.738
0.10 0.126 0.233 0.317 0.392 0.458 0.523 0.583 0.644
0.09 0.112 0.207 0.281 0.347 0.406 0.463 0.516 0.567
0.08 0.0975 0.181 0.247 0.305 0.353 0.403 0.450 0.488
0.07 0.0814 0.151 0.220 0.256 0.291 0.338 0.376 0.412
0.06 0.0685 0.127 0.172 0.201 0.246 0.282 0.312 0.344
0.05 0.0533 0.0688 0.134 0.164 0.192 0.219 0.244 0.268
0.04 0.0398 0.0742 0.100 0.123 0.144 0.164 0.182 0.201
0.03 0.0269 0.0502 0.0679 0.0834 0.0978 0.111 0.123 0.136
0.025 0.0217 0.0402 0.0543 0.0668 0.0782 0.0886 0.0981 0.108
(*)Reference value

CN49R【Conductor resistance】

[Ribbon]
Alloys Electrical
Resistivity
(20℃μΩｍ)
CN49R 0.49±0.03
［Unit：Ω/m］
Thickness
(mm)		 Width (mm)
40.0 32.0 25.0 20.0 16.0 13.0 10.0 6.5 5.0 3.2 2.4 1.6 0.8 0.4
2.90 0.00431 0.00539 0.00690 0.00862 0.0108 0.0133 0.0172
2.60 0.00481 0.00601 0.00769 0.00962 0.0120 0.0148 0.0192 0.0302
2.30 0.00543 0.00679 0.0087 0.0109 0.0136 0.0167 0.0217 0.0341 0.0444
2.00 0.00625 0.00781 0.0100 0.0125 0.0156 0.0192 0.0250 0.0393 0.0510
1.80 0.00694 0.00868 0.0111 0.0139 0.0174 0.0214 0.0278 0.0436 0.0567
1.60 0.00781 0.00977 0.0125 0.0156 0.0195 0.0240 0.0313 0.0491 0.0638
1.40 0.00893 0.0112 0.0143 0.0179 0.0223 0.0275 0.0357 0.0561 0.0729
1.20 0.0104 0.0130 0.0167 0.0208 0.0260 0.0321 0.0417 0.0654 0.0851
1.00 0.0125 0.0156 0.0200 0.0250 0.0313 0.0385 0.0500 0.0785 0.102
0.90 0.0174 0.0222 0.0278 0.0347 0.0427 0.0556 0.0873 0.113 0.177 0.236
0.80 0.0195 0.0250 0.0313 0.0391 0.0481 0.0625 0.0982 0.128 0.199 0.266
0.70 0.0286 0.0357 0.0446 0.0549 0.0714 0.112 0.146 0.228 0.304
0.60 0.0333 0.0417 0.0521 0.0641 0.0833 0.131 0.170 0.266 0.354
0.50 0.0400 0.0500 0.0625 0.0769 0.100 0.157 0.204 0.319 0.425
0.45 0.0444 0.0556 0.0694 0.0855 0.111 0.175 0.227 0.354 0.473 0.709
0.40 0.0781 0.0962 0.125 0.196 0.255 0.399 0.532 0.798
0.35 0.110 0.143 0.224 0.292 0.456 0.608 0.911
0.32 0.120 0.156 0.245 0.319 0.498 0.665 1.00
0.29 0.172 0.271 0.352 0.550 0.733 1.10 2.20
0.26 0.192 0.302 0.393 0.613 0.818 1.23 2.45 4.91
0.23 0.341 0.444 0.694 0.925 1.39 2.77 5.55
0.20 0.393 0.510 0.798 1.06 1.60 3.19 6.38
0.18 0.436 0.567 0.886 1.18 1.77 3.54 7.09
0.16 0.997 1.33 1.99 3.99 7.98
0.14 1.14 1.52 2.28 4.56 9.11
0.12 1.77 2.66 5.32 10.6
0.10 3.19 6.38 12.8
0.08 3.99 7.98 16.0
*Allowable tolerance of conductor resistance : Width 10mm or more ±7% , Width 10mm or less ±8%

Conductor Resistance Tolerance of Ribbon

Thickness
[mm]		 Width
[mm]		 Resitance Tolerance
[%]
0.08above　3.15below 10below ±8
10above ±7
*We can manufacture products other than the standard (size and tolerance), so please contact us.