Nichrome Wire Chart

Nichrome is an alloy of Nickel and Chromium. It is mainly used by the foam cutters as it has high melting point and corrosion resistance. NiCr A has 80% Ni, 20% Cr and NiCr C has 61% Ni, 15% Cr, 24% Fe. Nichrome Wire Chart shows the resistivity and ampere rating of NiCr A and NiCr C coils. The nichrome coil resistance and the current rating necessary to produce a given temperature specified in Nichrome wire data sheet varies for different type of alloy used.

Nichrome Wire Data Sheet

Resistance per Feet
Gauge NiCr A NiCr C
100.062480.06488
110.078490.08151
120.099070.1029
130.12540.1302
140.15870.1648
150.20010.2078
160.24990.2595
170.3210.3333
180.40630.4219
190.50150.5208
200.63480.6592
210.80020.831
221.0151.055
231.2731.322
241.6091.671
252.0292.107
262.5712.67
273.2243.348
284.0944.252
295.095.286
306.56.75
318.2068.522
3210.1610.55
3312.8913.39
3416.3817.01
3520.7321.52
362627
3732.133.33
3840.6342.19
3953.0655.1
4067.6470.24
Approximate Amperesto Heat NiChrome Wire
Gauge 400 600 800 1000 1200 1400 1600 1800 2000
1016.223.329.737.54656688092
1113.819.224.831.53948576778
1211.616.120.826.533.540.8485665
139.813.617.622.528.234.2414855
148.411.61518.823.52934.640.546
157.21012.816.12024.529.434.339.2
166.48.710.913.71720.925.129.433.6
175.57.59.511.714.517.621.124.628.1
184.86.58.210.112.214.817.720.723.7
194.35.87.28.710.612.715.217.820.5
203.85.16.37.69.1111315.217.5
213.34.35.36.57.89.41112.914.8
222.93.74.55.66.88.29.61112.5
232.583.344.95.978.39.611
242.212.93.44.25.167.18.29.4
251.922.5233.64.35.26.17.18
261.672.142.63.23.84.55.36.16.9
271.441.842.252.733.33.94.65.36
281.241.611.952.382.853.43.94.55.1
291.081.411.732.12.512.953.43.94.4
300.921.191.471.782.142.522.93.33.7
310.771.031.281.541.842.172.522.853.2
320.680.91.131.361.621.892.182.462.76
330.590.790.971.171.41.621.862.122.35
340.50.680.8311.21.411.61.81.99
350.430.570.720.871.031.211.381.541.71
360.380.520.630.770.891.041.191.331.48
370.350.460.570.680.780.91.031.161.29
380.30.410.50.590.680.780.880.981.09
390.270.360.420.490.580.660.750.840.92
400.240.310.360.430.50.570.640.720.79

As per Nichrome Wire Chart, NiCr C has a little higher resistance per foot. Based on the information in the Nichrome wire data sheet, NiCr A is better to use but NiCr C is cheap.


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