Richards Thermocouple and Temperature Sensor Catalog 16

NWA NWC

Manufacturing, Engineering and Sales Since 1938

Phone: 617.527.4385 Fax: 617.964.3746 Email: sales@asrichards.com

Heater Wire - Type A (80%) and Type C (60%)

The Richards NWA or Type A heater wire is composed of 80% Nickel and 20% Chromium. It has a lower temperature coefficient of re- sistance when compared to Type C wire. Type A has a usable temperature range up to 1150°C or 2100°F . Our NWC or Type C is composed of 60% Nickel, 16% Chromium, and 24% Iron. The Type C has a usable temperature range up to 1000°C or 1850°F . It has a higher coefficient of resistance than the Type A. Both types have excellent corrosion resistance. The Type C wire is very useful in applications where a high resistance is required within a limited space. In heating and technical applications, the Type A is most commonly used.

Gauges

Type A (80% Nickel)

Type C (60% Nickel)

Wire Gauge

Type A Part Number

Ohms / Foot

Feet / Pound

Type C Part Number

Ohms / Foot

Feet / Pound

Inches

MM

0 0 0 1 2 3 4 5 6 7 8 9

0.410 0.365 0.325 0.289 0.258 0.229 0.204 0.182 0.162 0.144 0.128 0.114 0.102 0.091 0.081 0.072 0.064 0.057 0.051 0.045 0.040

10.414

NWA910 NWA920 NWA930 NWA010 NWA020 NWA030 NWA040 NWA050 NWA060 NWA070 NWA080 NWA090 NWA100 NWA110 NWA120 NWA130 NWA140 NWA150 NWA160 NWA170 NWA180 NWA190 NWA200 NWA210 NWA220 NWA230 NWA240 NWA250 NWA260 NWA270 NWA280 NWA290 NWA300 NWA310 NWA320 NWA330 NWA340 NWA350 NWA360 NWA370 NWA380 NWA390 NWA400 NWA410 NWA420 NWA430 NWA440

0.003867 0.004879 0.006154 0.007782 0.009765 0.01240 0.01562 0.01962 0.02477 0.03135 0.03967 0.05002 0.06248 0.07849 0.09907 0.01254 0.01587

2.077 2.621 3.305 4.180 5.245 6.658 8.390 10.54 13.30 16.84 21.31 26.87 33.56 42.16 53.21 67.35 85.24

NWC910 NWC920 NWC930 NWC010 NWC020 NWC030 NWC040 NWC050 NWC060 NWC070 NWC080 NWC090 NWC100 NWC110 NWC120 NWC130 NWC140 NWC150 NWC160 NWC170 NWC180 NWC190 NWC200 NWC210 NWC220 NWC230 NWC240 NWC250 NWC260 NWC270 NWC280 NWC290 NWC300 NWC310 NWC320 NWC330 NWC340 NWC350 NWC360 NWC370 NWC380 NWC390 NWC400 NWC410 NWC420 NWC430 NWC440

0.004015 0.005067 0.006391 0.008082 0.01014 0.01287 0.01622 0.02038 0.02572 0.03255 0.04120 0.05194 0.06488 0.08151

2.119 2.673 3.372 4.264 5.351 6.792 8.559 10.75 13.57 17.18 21.74 17.41 34.23 43.01 54.29 68.71 86.96 109.6 136.9 175.9 222.6 274.8 347.8 438.5 556.4 697.3 881.6 1112 1409 1766 2243 2289 3562 4497 5565 7065 8974 11360 14250 17590 22260 29080 37060 47100 55990 70350 89040

9.271 8.255 7.341 6.553 5.817 5.182 4.623 4.115 3.658 3.251 2.896 2.591 2.311 2.057 1.829 1.626 1.448 1.295 1.143 1.016

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

0.1029 0.1302 0.1648 0.2078 0.2595 0.3333 0.4219 0.5208 0.6592

0.2001 0.2499 0.3210 0.4063 0.5015 0.6348 0.8002

107.50 134.20 172.40 218.20 269.40 341.00 429.80 545.50 683.60 864.20

0.0360 0.0320 0.0285 0.0253 0.0226 0.0201 0.0179 0.0159 0.0142 0.0126 0.0113 0.0100 0.0089 0.0080 0.0071 0.0063 0.0056 0.0050 0.0045 0.0040 0.0035 0.00310 0.00275 0.00250 0.00225 0.00200

0.9140 0.8130 0.7239 0.6426 0.5740 0.5105 0.4547 0.4039 0.3607 0.3200 0.2870 0.2540 0.2261 0.2032 0.1803 0.1600 0.1422 0.1270 0.1143 0.1016 0.0889 0.0787 0.0699 0.0635 0.0672 0.0508

0.831 1.055 1.322 1.671 2.107 2.670 3.348 4.252 5.286 6.750 8.522 10.55 13.39 17.01 21.52 27.00 33.33 42.19 55.10 70.24 89.26

1.015 1.273 1.609 2.029 2.571 3.224 4.094 5.090 6.500 8.206

1090 1381 1731 2199 2734 3491 4408 5455 5626 8797

10.160 12.890 16.380 20.730 26.000 32.100 40.630 53.060 67.640 85.950 104.000 128.400 162.500

11130 13970 17240 21820 28500 36330 46170 55860 68970 87280

108.00 133.30 168.80

45

0.00175

0.0445

NWA450

212.00

114000

NWC450

220.40

116300

46

0.00150

0.0381

NWA460

288.900

155200

NWC460

300.00

158300

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