resistance
 Danyang Resistance Wire Factory
Resistance wire and ribbon, Nichrome wire manufacturer

nickel-chrome alloy wire

Cr20Ni80 acid-pickled finished wiresThe Nickel-Chrome, Nickel-Chrome-Iron series heating resistance wires and strips have a series of advantage such as good anti-oxygen, high strength, easy to weld, etc. And the permanent elongations are very small while using with long hours. Our company has full ranges of Cr20Ni80, Cr15Ni60, Cr30Ni70, Cr20Ni30 and Cr20Ni35 wires, strips and strand wires. They are the first choose to manufacture the high quantity heating elements.

Main Characteristics of Nichrome Resistance Wires
Alloy Nomenclature
Performance
Cr20Ni80 Cr30Ni70 Cr15Ni60 Cr20Ni35 Cr20Ni30
Main
Chemical
composition
Ni Rest Rest 55.0-61.0 34.0-37.0 30.0-34.0
Cr 20.0-23.0 28.0-31.0 15.0-18.0 18.0-21.0 18.0-21.0
Fe ≤1.0 ≤1.0 Rest Rest Rest
Max. continuous service temp. of element 1200 1250 1150 1100 1100
Resistivity at 20ºC (μΩ·m) 1.09 1.18 1.12 1.0 1.04
Density (g/cm3) 8.40 8.10 8.20 7.90 7.90
Thermal conductivity(KJ/m·h·ºC) 60.3 45.2 45.2 43.8 43.8
Coefficient of lines expansion(α×10-6/ºC) 18.0 17.0 17.0 19.0 19.0
Melting point (approx.)( ºC) 1400 1380 1390 1390 1390
Elongation at rupture (%) >20 >20 >20 >20 >20
Micrographic structure austenite austenite austenite austenite austenite
Magnetic properties nonmagnetic nonmagnetic Weak magnetic Weak magnetic Weak magnetic

Nichrome resistance wires with the diameters and characteristics(1)
Dia.(mm) Cross sectional area(mm2) Cr20Ni80 Cr30Ni70
Resistance per meter (20ºC Ω/m) Length
per kg(m/kg)
Weight per Meter(kg/m) Resistance per meter (20ºC Ω/m) Length
per kg(m/kg)
Weight per Meter(kg/m)
0.10 0.007854 138.8 15158.405 0.00006597 150.2 15718.328 0.00006362
0.12 0.01131 96.38 10526.316 0.000095 104.3 10915.839 0.00009161
0.15 0.01767 61.68 6738.544 0.0001484 66.77 6988.120 0.0001431
0.17 0.0227 48.02 5243.838 0.0001907 51.99 5437.738 0.0001839
0.19 0.02835 38.44 4198.153 0.0002382 41.62 4353.505 0.0002297
0.21 0.03464 31.47 3437.607 0.0002909 34.07 3563.792 0.0002806
0.25 0.04909 22.21 2425.418 0.0004123 24.04 2515.091 0.0003976
0.27 0.05726 19.04 2079.434 0.0004809 20.61 2156.102 0.0004638
0.29 0.06605 16.5 1802.451 0.0005548 17.86 1869.159 0.000535
0.31 0.07548 14.44 1577.287 0.000634 15.63 1635.590 0.0006114
0.35 0.09621 11.33 1237.317 0.0008082 12.26 1283.203 0.0007793
0.40 0.1257 8.674 946.970 0.001056 9.39 982.318 0.001018
0.45 0.159 6.853 748.503 0.001336 7.419 776.398 0.001288
0.50 0.1963 5.551 606.428 0.001649 6.01 628.931 0.00159
0.60 0.2827 3.855 421.053 0.002375 4.173 436.681 0.00229
0.70 0.3848 2.832 309.310 0.003233 3.066 320.821 0.003117
0.80 0.5027 2.168 236.855 0.004222 2.348 245.580 0.004072
0.90 0.6362 1.713 187.126 0.005344 1.855 194.062 0.005153
1.00 0.7854 1.388 151.584 0.006597 1.502 157.183 0.006362
1.20 1.131 0.9638 105.263 0.0095 1.043 109.158 0.009161
1.40 1.539 0.7081 77.340 0.01293 0.7665 80.192 0.01247
1.60 2.011 0.5421 59.207 0.01689 0.5869 61.387 0.01629
1.80 2.545 0.4283 46.773 0.02138 0.4637 48.520 0.02061
2.00 3.142 0.347 37.893 0.02639 0.3756 39.293 0.02545
2.20 3.801 0.2867 31.319 0.03193 0.3104 32.478 0.03079
2.25 3.976 0.2741 29.940 0.0334 0.2968 31.046 0.03221
2.80 6.158 0.177 19.335 0.05172 0.1916 20.048 0.04988
3.00 7.069 0.1542 16.841 0.05938 0.1669 17.464 0.05726
3.50 9.621 0.1133 12.373 0.08082 0.1226 12.832 0.07793
4.00 12.57 0.08674 9.470 0.1056 0.0939 9.823 0.1018
4.50 15.9 0.06853 7.485 0.1336 0.07419 7.764 0.1288
5.00 19.63 0.05551 6.064 0.1649 0.0601 6.289 0.159
5.50 23.76 0.04588 5.010 0.1996 0.04967 5.198 0.1924
6.00 28.27 0.03855 4.211 0.2375 0.04173 4.367 0.229
6.50 33.18 0.03285 3.588 0.2787 0.03556 3.720 0.2688
7.00 38.48 0.02832 3.093 0.3233 0.03066 3.208 0.3117

Nichrome resistance wires with the diameters and characteristics(2)
Dia.(mm) Cross sectional area(mm2) Cr15Ni60 Cr20Ni35,Cr20Ni30
Resistance per meter (20ºC Ω/m) Length
per kg
(m/kg)
Weight per Meter(kg/m) Resistance per meter (20ºC Ω/m) Length
per kg(m/kg)
Weight per Meter(kg/m)
0.10 0.007854 142.6 15527.950 0.0000644 132.4 16116.035 0.00006205
0.12 0.01131 99.03 10782.834 0.00009274 91.96 11191.942 0.00008935
0.15 0.01767 63.38 6901.311 0.0001449 58.85 7163.324 0.0001396
0.17 0.0227 49.34 5373.455 0.0001861 45.82 5577.245 0.0001793
0.19 0.02835 39.5 4301.075 0.0002325 36.68 4464.286 0.000224
0.21 0.03464 32.34 3521.127 0.000284 30.03 3654.971 0.0002736
0.25 0.04909 22.82 2484.472 0.0004025 21.19 2578.649 0.0003878
0.27 0.05726 19.56 2129.925 0.0004695 18.16 2210.922 0.0004523
0.29 0.06605 16.96 1846.381 0.0005416 15.75 1916.443 0.0005218
0.31 0.07548 14.84 1615.770 0.0006189 13.78 1677.008 0.0005963
0.35 0.09621 11.64 1267.588 0.0007889 10.81 1315.616 0.0007601
0.40 0.1257 8.913 970.874 0.00103 8.276 1007.354 0.0009927
0.45 0.159 7.042 766.871 0.001304 6.539 796.178 0.001256
0.50 0.1963 5.704 621.118 0.00161 5.297 644.745 0.001551
0.60 0.2827 3.961 431.406 0.002318 3.678 447.628 0.002234
0.70 0.3848 2.91 316.857 0.003156 2.702 328.947 0.00304
0.80 0.5027 2.228 242.601 0.004122 2.069 251.826 0.003971
0.90 0.6362 1.761 191.681 0.005217 1.635 198.965 0.005026
1.00 0.7854 1.426 155.280 0.00644 1.324 161.160 0.006205
1.20 1.131 0.9903 107.828 0.009274 0.9196 111.919 0.008935
1.40 1.539 0.7276 79.239 0.01262 0.6756 82.237 0.01216
1.60 2.011 0.557 60.643 0.01649 0.5173 62.972 0.01588
1.80 2.545 0.4401 47.916 0.02087 0.4087 49.751 0.0201
2.00 3.142 0.3565 38.820 0.02576 0.331 40.290 0.02482
2.20 3.801 0.2946 32.082 0.03117 0.2736 33.300 0.03003
2.25 3.976 0.2817 30.675 0.0326 0.2616 31.837 0.03141
2.80 6.158 0.1819 19.806 0.05049 0.1689 20.559 0.04864
3.00 7.069 0.1584 17.253 0.05796 0.1471 17.908 0.05584
3.50 9.621 0.1164 12.676 0.07889 0.1081 13.156 0.07601
4.00 12.57 0.08913 9.709 0.103 0.08276 10.074 0.09927
4.50 15.9 0.07042 7.669 0.1304 0.06539 7.962 0.1256
5.00 19.63 0.05704 6.211 0.161 0.05297 6.447 0.1551
5.50 23.76 0.04714 5.133 0.1948 0.04377 5.328 0.1877
6.00 28.27 0.03961 4.314 0.2318 0.03678 4.476 0.2234
6.50 33.18 0.03375 3.675 0.2721 0.03134 3.815 0.2621
7.00 38.48 0.0291 3.169 0.3156 0.02702 3.289 0.304
nichrome resistance wire
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