Resistance Wire

Features:

  • Nickel-chromium wire (80ni-20cr) is proven to deliver outstanding performance over extended periods of time and is the same wire we use in our own electrical heating elements.
  • Uniformity of resistance
  • Mechanical stability
  • Fine surface finish
  • Consult OEM Heaters for specifications on other sizes and different alloys which are available.
    Typically Iron-Chromium-Aluminum alloy, Nickel-Iron Alloy, and Thermocouple Alloys.

If you have any questions regarding Resistance wire please call us at 86-755-27749405, e-mail us at sales@fullchance.com, or send us a contact form.

 

 

Product Highlights

checkmark Same wire we use to manufacture our high quality serpentine heating element

checkmark Multi-stranded construction provides greater flexibility than solid strand wires

checkmark Flexible up to a 1/16" (1.6mm) radius

checkmark Three types of resistance wires to solve multiple OEM heating applications

Specifications

RWK Polyimide Film Insulated Resistance Wire

RWK drawing

  • 482°F (250°C) continuous exposure temperature
  • Insulation type: 1 mil polyimide film with 50% overlap
  • Insulation thickness: 2 mil
  • Dielectric strength: Over 2000 volts
  • Suitable for use on conductive surfaces
  • 500ft (152m) or 1000ft (305m) spools
  • UL

 

RWF Fiberglass Insulated Resistance Wire

RWF drawing

 

  • 1100°F (593°C) continuous exposure temperature
  • Insulation type: Two layer of 8 mil diameter strands of fiberglass yarn
  • Dielectric strength: Over 2000 volts
  • Not suitable for use on conductive surfaces
  • Optional TEFLON® coating provides anti-fraying and abrasion resistance
  • 500ft (152m) or 1000ft (305m) spools

 

RWG Grounded Resistance Wire

RWG drawing

 

  • 482°F (250°C) continuous exposure temperature
  • Patented grounded braid through entire length of heating element
  • Insulation type: 1 mil polyimide film with 50% overlap
  • Insulation thickness: 2 mil
  • Two layers of 8 mil diameter fiberglass braided over polyimide film
  • Dielectric strength: Over 2000 volts
  • Suitable for use on conductive surfaces
  • Optional TEFLON® coating provides anti-fraying and abrasion resistance
  • 500ft (152m) or 1000ft (305m) spools
  • UL

TEFLON® is a registered Trademark of DuPont used under license.

Ordering Information

When specifying resistance wire, it is important to consider all aspects of the application and of the wire. For example, if the application is on a conductive surface, wire type RWF should not be chosen. Also, if the application requires constant temperatures of 350°F (176°C), then alloy J should not be chosen. Call your local distributor or Fullchance direct for application assistance.

Part Number Matrix

Ordering part number matrix

Alloy Specifications
ohms law
Alloy Type Gauge / Strand Maximum Exposure Temperature Ohms / Ft / Strand Composition
A 43 1650°F (899°C) 172.50 71.75% Fe, 22% Cr, 5.75% Al, 0.5% Cu
B 41 1650°F (899°C) 115.31 71.75% Fe, 22% Cr, 5.75% Al, 0.5% Cu
C 40 1650°F (899°C) 88.18 71.75% Fe, 22% Cr, 5.75% Al, 0.5% Cu
D 40 1650°F (899°C) 70.24 60% Ni, 15% Cr, 25% Fe
E 39 1650°F (899°C) 55.10 60% Ni, 15% Cr, 25% Fe
F 37 1650°F (899°C) 33.33 60% Ni, 15% Cr, 25% Fe
G 37 450°F (232°C) 14.52 55% Cu, 45% Ni
H 37 1000°F (538°C) 8.88 78% Cu, 22% Ni
I 37 797°F (425°C) 4.44 88% Cu, 12% Ni
J 36 300°F (149°C) 0.48 90% Cu (core), 10% Ni (cladding)

 

Resistance per Foot
Number of Strands Alloy Type
A B C D E F G H I J
5 34.500 23.062 17.636 14.048 11.020 6.666 2.904 1.776 0.888 0.096
6 28.750 19.218 14.697 11.707 9.183 5.555 2.420 1.480 0.740 0.080
7 24.643 16.473 12.597 10.034 7.871 4.761 2.074 1.269 0.634 0.069
8 21.563 14.414 11.023 8.780 6.888 4.166 1.815 1.110 0.555 0.060
9 19.166 12.812 9.798 7.804 6.122 3.703 1.613 0.987 0.493 0.053
10 17.250 11.531 8.818 7.024 5.510 3.333 1.452 0.888 0.444 0.048
11 15.682 10.483 8.016 6.385 5.009 3.030 1.320 0.807 0.404 0.044
12 14.375 9.609 7.348 5.853 4.592 2.778 1.210 0.740 0.370 0.040
13 13.269 8.870 6.783 5.403 4.238 2.564 1.117 0.683 0.342 0.037
14 12.321 8.236 6.299 5.017 3.936 2.381 1.037 0.634 0.317 0.034
15 11.500 7.687 5.879 4.683 3.673 2.222 0.968 0.592 0.296 0.032
16 10.781 7.207 5.511 4.390 3.444 2.083 0.908 0.555 0.278 0.030
17 10.147 6.783 5.187 4.132 3.241 1.961 0.854 0.522 0.261 0.028
18 9.583 6.406 4.899 3.902 3.061 1.852 0.807 0.493 0.247 0.027
19 9.079 6.069 4.641 3.697 2.900 1.754 0.764 0.467 0.234 0.025
20 8.625 5.766 4.409 3.512 2.755 1.667 0.726 0.444 0.222 0.024
21 8.214 5.491 4.199 3.345 2.624 1.587 0.691 0.423 0.211 0.023
22 7.841 5.241 4.008 3.193 2.505 1.515 0.660 0.404 0.202 0.022
23 7.500 5.013 3.834 3.054 2.396 1.449 0.631 0.386 0.193 0.021
24 7.186 4.805 3.674 2.927 2.296 1.389 0.605 0.370 0.185 0.020
25 6.900 4.612 3.527 2.810 2.204 1.333 0.581 0.355 0.178 0.019
26 6.635 4.435 3.392 2.702 2.119 1.282 0.558 0.342 0.171 0.018
27 6.389 4.271 3.266 2.601 2.041 1.234 0.538 0.329 0.164 0.018
28 6.161 4.118 3.149 2.509 1.968 1.190 0.519 0.317 0.159 0.017
29 5.948 3.976 3.041 2.422 1.900 1.149 0.501 0.306 0.153 0.017
30 5.750 3.844 2.939 2.341 1.837 1.111 0.484 0.296 0.148 0.016

 

Note: Resistance tolerance is ±8%

Resistance wire should not be used to produce greater than 15 watts per inch (25mm).