Nickel Chromium Resistance Wire

Home » Products » Heating Resistance Wire and Ribbon » Nickel Chromium Resistance Wire
inquiry form

High electrical resistivity, good anti-oxidation, wear resistance, great workability and weldability, as well as high strength under high temperatures, make it possible for the nickel chromium resistance wire and nickel-chrome-iron alloy wire to become the most popular products in the high resistance alloy field. Currently, these wire products are extensively used for making electrical heating elements, voltage regulator resistors and braking resistors in many industries, like the metallurgical, chemical, machinery, glass, ceramics, and household appliances.

Main Properties of Ni-Cr and Ni-Cr-Fe Resistance Wires
Type Performance Cr20Ni80 Cr30Ni70 Cr15Ni60 Cr20Ni35 Cr20Ni30 Cr25Ni20
Main chemical composition Ni Rest Rest 55.0-61.0 34.0-37.0 30.0-34.0 19.0-22.0
Cr 20.0-23.0 28.0-31.0 15.0-18.0 18.0-21.0 18.0-21.0 24.0-26.0
Fe ≤1.0 ≤1.0 Rest Rest Rest Rest
Max. continuous service temp. of element (℃) 1200 1250 1150 1100 1100 1050
Resistivity at 20 ℃ (μΩ·m) 1.09±0.05 1.18±0.05 1.12±0.05 1.0±0.05 1.04±0.05 0.95±0.05
Density (g/cm3) 8.40 8.10 8.20 7.90 7.90 7.15
Thermal conductivity
(KJ/m·h·℃)
60.3 45.2 45.2 43.8 43.8 43.8
Coefficient of linear expansion
(α×10-6/℃)
18.0 17.0 17.0 19.0 19.0 19.0
Melting point (approx.) (℃) 1400 1380 1390 1390 1390 1400
Elongation at rupture (%) >20 >20 >20 >20 >20 >20
Micrographic structure austenite austenite austenite austenite austenite austenite
Magnetic properties nonmagnetic nonmagnetic nonmagnetic Weak magnetic Weak magnetic Weak magnetic

Note: The electric resistance alloy materials in various grades are blended with an appropriate amount of rare earth, titanium and other trace elements so as to improve the processing performance and prolong the use life.

Cr20Ni80 Technical Data for Wire
Dia. (mm) Cross-sectional area (mm2) Weight/Meter
(g/m)
Resistance/Meter at 20℃ (Ω/m) Dia. (mm) Cross-sectional area (mm2) Weight/Meter
(g/m)
Resistance/Meter at 20℃ (Ω/m)
0.018 0.0002550 0.002117 3410-4610 0.25 0.04909 0.4074 20.88-23.54
0.020 0.000314 0.002606 2940-3740 0.28 0.06158 0.5111 16.64-18.76
0.022 0.000380 0.003154 2440-3100 0.30 0.07069 0.5867 14.49-16.35
0.025 0.000491 0.004075 1880-2400 0.32 0.07548 0.6265 12.74-14.36
0.028 0.000616 0.005113 1530-1870 0.33 0.08553 0.7099 12.20-13.40
0.030 0.000707 0.005868 1338-1696 0.38 0.1134 0.9412 9.13-10.09
0.032 0.000804 0.006673 1180-1440 0.40 0.1257 1.0433 8.24-9.108
0.035 0.000962 0.007958 981-1200 0.41 0.1320 1.0956 7.68-8.89
0.040 0.001257 0.01043 780.7-954.1 0.45 0.1590 1.3197 6.51-7.196
0.045 0.001590 0.0132 594-726 0.50 0.1963 1.6293 5.273-5.829
0.050 0.001963 0.01629 499.6-610.6 0.55 0.2376 1.9721 4.518-4.994
0.055 0.00238 0.01975 407-477 0.60 0.2827 2.3464 3.797-4.197
0.063 0.00312 0.02590 321.41-377.31 0.65 0.3318 2.7539 3.235-3.575
0.070 0.00385 0.03196 260.5-305.9 0.70 0.3848 3.1938 2.789-3.083
0.080 0.005027 0.04172 199.5-234.1 0.75 0.4418 3.6669 2.43-2.686
0.090 0.006362 0.0528 157.6-185.0 0.80 0.5027 4.1724 2.136-2.36
0.100 0.007854 0.0652 127.7-149.9 0.85 0.5674 4.7094 1.891-2.091
0.110 0.009852 0.08177 105.5-123.9 0.90 0.6362 5.2805 1.687-1.865
0.120 0.01227 0.1018 88.67-104.1 0.95 0.7088 5.883 1.46-1.62
0.140 0.01539 0.1277 65.85-75.77 1.00 0.7854 6.5188 1.367-1.511
0.150 0.01767 0.1467 56.75-66.63 1.10 0.9503 7.8875 1.13-1.26
0.160 0.02011 0.01669 50.42-58.00 1.12 0.9852 8.1772 1.05-1.17
0.170 0.02270 0.1884 44.18-51.86 1.18 1.0936 9.0769 0.95-1.05
0.180 0.02545 0.2112 40.26-45.40 1.20 1.313 10.8979 0.79-0.87
0.190 0.02835 0.2353 35.37-41.53 1.30 1.327 11.0141 0.78-0.86
0.200 0.03142 0.2608 32.62-36.78 1.40 1.539 12.7737 0.70-0.77
0.212 0.03530 0.2930 28.41-33.35 1.50 1.767 14.6661 0.60-0.67
0.220 0.03801 0.3155 26.65-30.39 1.60 2.011 16.8924 0.52-0.58

Size Range
Wire Diameter and Tolerance

Diameter (mm) Tolerance (mm)
Wires 0.018~0.025 ±0.001
0.028~0.055 ±0.003
0.070~0.14 ±0.004
0.16~0.20 ±0.005
0.22~0.25 ±0.006
0.28~0.30 ±0.007
0.32~0.40 ±0.01
0.41~0.50 ±0.015
0.55~0.80 +0.02/-0.03
0.85~1.00 +0.02/-0.03
1.10~1.50 ±0.03

Note: special specification can be produced in accordance with client's request.

Cr20Ni80 Technical Data for Ribbon
Thickness x Width (mm) Resistance/Meter (20℃) Ω/m Surface area/ohm (20℃) (cm2/Ω) Weight/Meter g/m Surface area/Meter cm2/m
0.09×2.5 5.27 9.84 1.72 51.8
0.08×0.2 74.0 0.0756 0.122 5.60
0.08×0.3 49.4 0.154 0.183 7.60
0.08×0.4 37.0 0.259 0.244 9.60
0.08×0.5 29.6 0.392 0.305 11.6
0.08×0.6 24.7 0.551 0.367 13.6
0.08×0.7 21.2 0.737 0.428 15.6
0.08×0.8 18.5 0.951 0.489 17.6
0.08×0.9 16.5 1.19 0.550 19.6
0.08×1.0 14.8 1.46 0.611 21.6
0.08×1.2 12.3 2.07 0.733 25.6
0.08×1.5 9.87 3.20 0.916 31.6
0.08×1.8 8.23 4.57 1.10 37.6
0.08×2.0 7.40 5.62 1.22 41.6
0.07×0.2 84.6 0.0638 0.107 5.40
0.07×0.3 56.4 0.131 0.160 7.40
0.07×0.4 42.3 0.222 0.214 9.40
0.07×0.5 33.9 0.337 0.267 11.4
0.07×0.6 28.2 0.475 0.321 13.4
0.07×0.7 24.2 0.637 0.374 15.4
0.07×0.8 21.2 0.822 0.428 17.4
0.07×0.9 18.8 1.03 0.481 19.4
0.07×1.0 16.9 1.26 0.535 21.4
0.07×1.2 14.1 1.80 0.641 25.4
0.07×1.5 11.3 2.78 0.802 31.4
0.06×0.2 98.7 0.0527 0.0916 5.20
0.06×0.3 65.8 0.109 0.137 7.20
0.06×0.4 49.4 0.186 0.183 9.20
0.06×0.5 39.5 0.284 0.229 11.2
0.06×0.6 32.9 0.401 0.275 13.2
0.06×0.7 28.2 0.539 0.321 15.2
0.06×0.8 24.7 0.697 0.367 17.5
0.06×0.9 21.9 0.875 0.412 19.2
0.06×1.0 19.7 1.07 0.458 21.2
0.06×1.2 16.5 1.53 0.550 25.2
0.05×0.2 118 0.0422 0.0764 5.00
0.05×0.3 79.0 0.0886 0.115 7.00
0.05×0.4 59.2 0.152 0.153 9.00
0.05×0.5 47.4 0.232 0.191 11.00
0.05×0.6 39.5 0.329 0.229 13.00
0.05×0.7 33.9 0.443 0.267 15.0
0.05×0.8 29.6 0.574 0.305 17.0
0.05×0.9 16.3 0.722 0.344 19.0
0.05×1.0 23.7 0.886 0.382 21.0
Ribbon is rolled by the wire, and the actual cross-sectional area is 8% smaller than that calculated by the rectangle.

Senphus is a specialized nickel chromium resistance wire manufacturer and supplier in China. We provide a broad range of products, including Teflon heating wire, snow melting heating cable, silicone rubber heating pad, and more.

Related Names:
Nichrome Resistance Wire | Wire with High Resistance to Oxidation | Nicr8020 Wire | Nichel Alloy Wire | Nicr1560 Wire

Inquiry Form