These alloys are suitable
for usage of hi-temperature, which have good tensile strength and are rarely
softened even under hi-temperature. Still they are not brittle, they are endurable
to gas, corrosion and oxidation. There is high dense and coherent oxidation
film covering its surface, the film can endure tremendous temperature change,
will never be peeled off.
Besides, comparing
with resistance wire made from other material, because of the lighter weight,
and larger in resistivity resistors adopting this wire will be very light
in weight.
|
Type |
Chemical Composition (%) |
||||||
|
Ni |
Cr |
Al |
C |
Si |
Mn |
Fe |
|
|
Cr20Ni80 |
above 77 |
19~21 |
|
below 0.15 |
0.75~1.5 |
below 2.5 |
below 1 |
|
Cr15Ni60 |
above 57 |
15~18 |
|
below 0.15 |
0.75~1.5 |
below 1.5 |
rest |
|
0Cr25Al5 |
|
23~26 |
4~6 |
below 0.10 |
below 1.5 |
below 1.0 |
rest |
|
0Cr19Al3 |
|
17~21 |
2~4 |
below 0.10 |
below 1.5 |
below 1.0 |
rest |
|
Type |
Resistivity (mΩ·m) 23℃ |
Max work temperature ℃ |
Specific
gravity 7.15g/cm3 |
Specific heat cal/g℃ |
Melting point ℃ |
Tensile strength kg/mm2 |
Elongation % |
|
Cr20Ni80 |
1.08±0.05 |
1150 |
8.41 |
0.106 |
1400 |
65~80 |
25~35 |
|
Cr15Ni60 |
1.12±0.05 |
1000 |
8.25 |
0.112 |
1390 |
65~80 |
25~35 |
|
0Cr25Al5 |
1.42±0.06 |
1250 |
7.20 |
0.201 |
1510 |
65~85 |
7~18 |
|
0Cr19Al3 |
1.23±0.06 |
1100 |
7.35 |
0.199 |
1500 |
65~85 |
10~20 |
|
Type |
Test Methods |
Times |
|
Cr20Ni80 |
Method I 1200℃ |
above 500 |
|
Cr15Ni60 |
Method I 1200℃ |
above 300 |
|
0Cr25Al5 |
Method U 1300℃ |
above 250 |
|
0Cr19Al3 |
Method U 1300℃ |
above 100 |
|
Wire Dia |
Sectional area mm2 |
Resistance Ω/m |
Lengthm/kg |
Current(Ampere)Value
when a single wire is horizontally hookedup in open air |
|||||||
|
B.S |
mm |
200℃ |
300℃ |
400℃ |
500℃ |
600℃ |
700℃ |
800℃ |
|||
|
0 1 2 3 4 |
8.0 7.0 6.5 6.0 5.5 |
50.27 38.48 33.18 28.27 23.76 |
0.0215 0.0281 0.0326 0.0382 0.0455 |
2.34 3.06 3.54 4.16 4.95 |
123.3 100.0 90.8 80.5 71.0 |
167.2 137.0 123.6 109.5 96.8 |
204.5 167.2 150.8 133.0 117.2 |
243.0 198.3 178.7 158.0 138.6 |
277.0 226.8 203.5 179.0 158.0 |
309.0 251.5 227.2 200.0 176.4 |
345.2 281.3 354.0 223.5 197.0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4 5 6 7 8 |
5.0 4.5 4.0 3.5 3.2 |
19.64 15.90 12.57 9.621 8.042 |
0.0550 0.0679 0.0859 0.1123 0.1343 |
5.99 7.40 9.36 12.23 14.62 |
61.7 53.0 44.5 36.5 32.0 |
85.3 74.0 61.2 50.3 44.2 |
101.8 88.1 74.5 61.2 53.9 |
120.9 103.8 87.6 72.5 63.7 |
138.5 119.5 99.5 82.0 72.8 |
153.0 132.0 111.0 91.5 81.0 |
172.3 148.2 124.3 101.6 90.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
9 10 11 12 13 |
2.9 2.6 2.3 2.0 1.8 |
6.605 5.309 4.155 3.142 2.545 |
0.1635 0.203 0.260 0.344 0.424 |
17.81 22.2 28.3 37.4 46.2 |
28.0 24.0 21.0 16.4 14.2 |
36.5 33.0 26.5 22.5 19.0 |
46.5 40.0 33.5 27.0 22.8 |
55.0 47.2 40.0 32.2 28.0 |
62.8 54.0 45.5 37.0 31.8 |
70.0 60.6 50.5 41.4 35.5 |
79.0 67.8 56.5 45.5 39.7 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
14 15 16·17 18 19 |
1.6 1.4 1.2 1.0 0.9 |
2.011 1.539 1.131 0.7854 0.6362 |
0.537 0.702 0.955 1.375 1.698 |
58.8 76.5 104.0 149.8 184.8 |
12.0 10.0 8.0 6.3 5.22 |
16.0 13.4 10.8 8.2 7.11 |
16.0 16.3 13.0 10.3 8.68 |
23.6 19.5 15.5 12.0 10.2 |
27.0 22.3 17.5 13.2 11.78 |
27.0 24.8 20.0 14.9 13.16 |
33.7 27.8 22.3 17.2 14.62 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
20 21 22 23 |
0.8 0.7 0.65 0.60 0.55 |
0.5027 0.3848 0.3318 0.2827 0.2376 |
2.15 2.31 3.25 3.32 4.55 |
234 306 355 416 495 |
4.40 3.65 3.26 2.92 2.59 |
5.97 4.99 4.47 3.99 3.52 |
7.29 6.06 5.44 4.88 4.31 |
8.65 7.15 6.39 5.74 5.07 |
9.97 8.24 7.35 6.62 5.87 |
11.19 9.20 8.26 7.40 6.53 |
12.34 10.21 9.18 8.23 7.30 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
24 25 26 27 28 |
0.50 0.45 0.40 0.35 0.32 |
0.1964 0.1590 0.1257 0.09621 0.08042 |
5.50 6.79 8.59 11.23 13.43 |
599 740 936 1222 1462 |
2.26 1.92 1.63 1.36 1.19 |
3.07 2.62 2.21 1.83 1.61 |
3.73 3.22 2.69 2.24 1.96 |
4.41 3.79 3.20 2.64 2.31 |
5.10 4.33 3.69 3.07 2.69 |
5.69 4.90 4.11 3.43 3.02 |
6.35 5.45 4.58 8.83 3.36 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
29 30 31 32 33 |
0.29 0.26 0.23 0.20 0.18 |
0.06605 0.05309 0.04155 0.03142 0.02545 |
16.35 20.3 26.0 34.4 42.4 |
1780 2210 2330 3740 4620 |
1.02 0.89 0.73 0.60 0.52 |
1.38 1.19 0.99 0.82 0.71 |
1.69 1.47 1.24 1.02 0.89 |
1.99 1.70 1.43 1.18 1.01 |
2.31 2.00 1.71 1.42 1.22 |
2.60 2.24 1.89 1.56 1.35 |
2.83 2.48 2.09 1.72 1.50 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
34 35 36·37 38 39 |
0.16 0.14 0.12 0.10 0.09 |
0.02011 0.01539 0.01131 0.007854 0.006362 |
53.7 70.2 95.5 137.5 169.3 |
5850 7650 10400 15970 18480 |
0.43 0.37 0.29 0.22 0.19 |
0.60 0.49 0.39 0.31 0.26 |
0.74 0.61 0.49 5.38 0.32 |
0.86 0.70 0.57 0.44 0.37 |
1.03 0.85 0.68 0.53 0.45 |
1.11 0.92 0.74 0.58 0.49 |
1.24 1.02 0.82 0.64 0.55 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
40 41 |
0.08 0.07 |
0.005027 0.003848 |
215. 281. |
23400 30600 |
0.17 0.14 |
0.22 0.16 |
0.27 0.21 |
0.32 0.26 |
0.38 0.26 |
0.42 0.35 |
0.46 0.38 |
|
|
Resistance increasing
ratio changing with temperature |
||||||||||||
|
Temperature℃ |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
1000 |
1100 |
1200 |
|
Resistance increasing
ratio % |
1.000 |
1.000 |
1.025 |
1.043 |
1.064 |
1.080 |
1.073 |
1.067 |
1.070 |
1.075 |
1.082 |
1.090 |
1.079 |
|
Wire Dia |
Sectional area mm2 |
Resistance Ω/m |
Length m/kg |
Current(Ampere)Value
when a single wire is horizontally hookedup in open air |
|||||||
|
B.S |
mm |
200℃ |
300℃ |
400℃ |
500℃ |
600℃ |
700℃ |
800℃ |
|||
|
0 1 2 3 4 |
8.0 7.0 6.5 6.0 5.5 |
50.27 38.48 33.18 28.27 23.76 |
0.0223 0.0291 0.0338 0.0396 0.0471 |
2.37 3.09 3.59 4.21 5.01 |
114.3 93.3 83.9 74.4 66.0 |
157.0 127.0 118.8 101.8 90.0 |
194.2 157.3 140.3 126.2 112.1 |
231.0 187.6 168.2 150.0 132.1 |
256.8 210.5 189.3 168.7 149.4 |
291.2 237.3 212.6 189.7 163.4 |
320.5 261.8 235.0 209.5 185.2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4 5 6 7 8 |
5.0 4.5 4.0 3.5 3.2 |
19.64 15.90 12.57 9.621 8.042 |
0.0570 0.0704 0.0819 0.1161 0.1393 |
6.03 7.49 9.47 12.37 14.80 |
57.8 49.6 41.8 34.3 30.3 |
78.3 67.5 57.0 47.2 41.6 |
97.8 83.7 70.5 58.4 52.0 |
115.3 99.0 83.9 69.3 61.0 |
130.2 111.8 94.8 78.9 69.4 |
146.4 125.4 106.7 87.8 77.0 |
161.6 132.2 117.5 97.3 85.6 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
9 10 11 12 13 |
2.9 2.6 2.3 2.0 1.8 |
6.605 5.309 4.155 3.142 2.545 |
0.1696 0.211 0.270 0.356 0.440 |
18.02 22.4 28.6 37.9 46.8 |
26.2 22.3 18.8 15.3 13.2 |
36.0 30.7 25.5 21.0 17.8 |
44.7 38.1 32.0 26.4 22.5 |
52.8 44.6 37.5 31.0 26.8 |
60.0 51.5 43.0 35.2 30.2 |
67.0 56.8 43.0 39.1 33.8 |
74.0 63.0 52.8 43.5 37.2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
14 15 16·17 18 19 |
1.6 1.4 1.2 1.0 0.9 |
2.011 1.539 1.131 0.7854 0.6362 |
0.557 0.728 0.990 0.1426 0.1760 |
59.2 77.4 105.2 151.5 187 |
11.0 9.0 7.5 6.0 4.94 |
15.0 12.5 10.0 7.9 6.75 |
19.0 15.4 12.5 10.0 8.44 |
22.3 18.5 14.8 11.0 9.83 |
25.5 21.0 17.0 12.9 11.32 |
23.4 23.6 18.8 14.6 12.57 |
31.3 26.2 20.8 16.0 13.92 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
20 21 22 23 |
0.8 0.7 0.65 0.60 0.55 |
0.5027 0.3848 0.3318 0.2827 0.2376 |
2.23 2.91 3.38 3.96 4.71 |
237 309 360 412 501 |
4.17 3.45 3.12 2.78 2.45 |
5.70 4.71 4.24 3.78 3.34 |
7.14 5.91 5.31 4.73 4.17 |
8.35 6.91 6.23 5.55 4.89 |
9.51 7.85 7.03 6.30 5.57 |
10.68 8.81 7.92 7.07 6.24 |
11.78 9.77 8.87 7.83 6.91 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
24 25 26 27 28 |
0.50 0.45 0.40 0.35 0.32 |
0.1964 0.1590 0.1257 0.09621 0.08042 |
5.70 7.04 8.91 11.64 13.93 |
606 749 948 1237 1480 |
2.13 1.82 1.55 1.23 1.12 |
2.91 2.50 2.11 1.75 1.53 |
3.64 3.11 2.65 2.16 1.84 |
4.27 3.67 3.10 2.57 2.25 |
4.79 4.20 3.55 2.95 2.61 |
5.47 4.60 3.89 3.23 2.84 |
6.05 5.19 4.20 3.65 3.21 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
29 30 31 32 33 |
0.29 0.26 0.23 0.20 0.18 |
0.06605 0.05309 0.04155 0.03142 0.02545 |
16.96 21.1 27.0 35.6 44.0 |
1800 2240 2360 3790 4680 |
0.95 0.83 0.69 0.56 0.49 |
1.32 1.13 0.95 0.78 0.67 |
1.60 1.37 1.15 0.95 0.81 |
1.97 1.69 1.42 1.18 1.01 |
2.27 1.95 1.64 1.35 1.16 |
2.49 2.13 1.80 1.50 1.23 |
2.76 2.36 2.00 1.64 1.42 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
34 35 36·37 38 39 |
0.16 0.14 0.12 0.10 0.09 |
0.02011 0.01539 0.01131 0.007854 0.006362 |
55.7 72.3 99.0 142.6 176.0 |
5920 7740 10520 15150 18700 |
0.41 0.34 0.28 0.21 0.18 |
0.57 0.46 0.37 0.28 0.25 |
0.68 0.56 0.45 0.35 0.29 |
0.85 0.70 0.56 0.43 0.37 |
0.98 0.81 0.65 0.50 0.45 |
1.06 0.87 0.71 0.55 0.47 |
1.18 0.98 0.79 0.61 0.51 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
40 41 |
0.08 0.07 |
0.005027 0.003848 |
223.0 291.0 |
23700 30900 |
0.16 0.13 |
0.21 0.16 |
0.25 0.21 |
0.31 0.24 |
0.39 0.30 |
0.39 0.33 |
0.44 0.35 |
|
|
Resistance increasing
ratio changing with temperature |
||||||||||||
|
Temperature℃ |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
1000 |
1100 |
1200 |
|
Resistance increasing
ratio% |
1.000 |
1.017 |
1.037 |
1.060 |
1.083 |
1.097 |
1.100 |
1.103 |
1.112 |
1.120 |
1.131 |
1.141 |
1.153 |
|
Wire Dia mm |
Wire Dia tolerance mm |
Sectional area mm2 |
Resistance Tolerance Per
meter % |
0Cr25Al5 |
0Cr19Al3 |
||||
|
Solid resistance m
142Ω.cm |
Specific resistance123 m
Ω/cm |
||||||||
|
Resistance Ω/m |
Length m/kg |
Weight k/m |
Resistance Ω/m |
Length m/kg |
Weight k/m |
||||
|
12.0 11.0 10.0 9.0 8.0 |
±0.12 ±0.11 ±0.11 ±0.10 ±0.09 |
113.1 95.03 78.54 63.62 50.27 |
±5.0 ±5.0 ±5.0 ±5.0 ±5.0 |
0.01256 0.01494 0.01808 0.0223 0.0283 |
1.229 1.462 1.770 2.18 2.76 |
814 684 565 458 362 |
0.01088 0.01295 0.01566 0.01934 0.0245 |
1.203 1.443 1.733 2.14 2.71 |
831 698 577 468 369 |
|
7.0 6.5 6.0 5.5 5.0 |
±0.08 ±0.08 ±0.08 ±0.08 ±0.07 |
38.48 33.18 28.27 23.76 19.64 |
±5.0 ±5.0 ±5.0 ±5.0 ±5.0 |
0.0369 0.0428 0.0502 0.0597 0.0723 |
3.61 4.18 4.90 5.84 7.07 |
277 239 204 171.1 141.4 |
0.0320 0.0371 0.0436 0.0518 0.0626 |
3.53 4.10 4.81 5.73 6.93 |
283 244 208 174.6 144.4 |
|
4.5 4.0 3.5 3.2 2.9 |
±0.07 ±0.06 ±0.06 ±0.05 ±0.05 |
15.90 12.57 9.621 8.042 6.665 |
±5.0 ±5.0 ±5.0 ±5.0 ±5.0 |
0.0893 0.1130 0.1476 0.1766 0.215 |
8.73 11.05 14.43 17.27 21.0 |
114.5 90.5 69.3 57.9 47.6 |
0.0773 0.0979 0.1278 0.1529 0.1862 |
8.55 10.82 14.14 16.92 20.6 |
116.9 92.4 70.7 59.1 48.5 |
|
2.6 2.3 2.0 1.8 1.6 |
±0.05 ±0.05 ±0.04 ±0.04 ±0.035 |
5.309 4.155 3.142 2.545 2.001 |
±5.0 ±5.0 ±5.0 ±5.0 ±5.0 |
0.268 0.342 0.452 0.558 0.706 |
26.2 33.4 44.2 54.6 69.1 |
38.2 29.9 22.6 18.32 14.48 |
0.232 0.296 0.391 0.483 0.612 |
25.6 32.8 43.3 53.4 67.7 |
39.0 30.5 23.1 18.71 14.78 |
|
1.5 1.4 1.3 1.2 1.1 |
±0.035 ±0.035 ±0.03 ±0.03 ±0.03 |
1.767 1.539 1.327 1.131 0.9503 |
±5.0 ±6.0 ±6.0 ±6.0 ±6.0 |
0.803 0.923 1.067 1.256 1.494 |
78.1 90.3 104.7 122.9 146.2 |
12.72 11.08 9.55 8.14 6.84 |
0.696 0.799 0.927 1.088 1.295 |
77.0 88.4 102.6 120.3 143.3 |
12.99 11.31 9.75 8.31 6.98 |
|
1.0 0.9 0.85 0.80 0.75 |
±0.025 ±0.025 ±0.025 ±0.025 ±0.02 |
0.7854 0.6362 0.5675 0.5027 0.4418 |
±6.0 ±6.0 ±6.0 ±6.0 ±6.0 |
1.080 2.23 2.51 2.83 3.22 |
177.0 218 244 276 314 |
5.65 4.58 4.09 3.62 3.18 |
1.566 1.934 2.17 2.45 2.78 |
173.3 214 240 271 308 |
5.77 4.68 4.17 3.69 3.25 |
|
0.70 0.65 0.60 0.55 0.50 |
±0.02 ±0.02 ±0.02 ±0.015 ±0.015 |
0.3848 0.3318 0.2827 0.2376 0.1964 |
±6.0 ±7.0 ±7.0 ±7.0 ±7.0 |
3.69 4.28 5.02 5.97 7.23 |
361 418 490 584 707 |
2.77 2.39 2.04 1.711 1.414 |
3.20 3.71 4.36 5.18 6.26 |
353 410 481 573 693 |
2.83 2.44 2.08 1.746 1.444 |
|
0.45 0.40 0.35 0.32 0.29 |
±0.015 ±0.015 ±0.015 ±0.015 ±0.01 |
0.1590 0.1257 0.09621 0.08042 0.06605 |
±7.0 ±7.0 ±8.0 ±8.0 ±8.0 |
8.93 11.30 14.76 17.66 21.5 |
873 1105 1443 1727 2101 |
1.145 0.905 0.693 0.579 0.476 |
7.73 9.79 12.78 15.29 18.62 |
855 1082 1414 1692 2062 |
1.169 0.924 0.707 0.591 0.485 |
|
0.26 0.23 0.20 0.18 0.16 |
±0.01 ±0.01 ±0.009 ±0.008 ±0.008 |
0.05309 0.04155 0.03142 0.02545 0.02011 |
±8.0 ±8.0 ±8.0 ±9.0 ±9.0 |
26.8 34.2 45.2 55.8 70.6 |
2618 3344 4425 5464 6897 |
0.382 0.299 0.226 0.183 0.145 |
23.2 29.6 39.1 48.3 61.2 |
2564 3279 4329 5348 6757 |
0.390 0.305 0.231 0.187 0.148 |
|
0.15 0.14 0.13 0.12 0.11 |
±0.008 ±0.008 ±0.006 ±0.006 ±0.006 |
0.01776 0.01536 0.01327 0.01131 0.009503 |
±9.0 ±9.0 ±9.0 ±9.0 ±10.0 |
80.3 92.3 106.7 125.6 149.4 |
7874 9009 10470 12290 14620 |
0.127 0.0117 0.0955 0.0814 0.0684 |
69.6 79.9 92.7 108.8 129.5 |
7692 8850 10260 12030 14330 |
0.130 0.113 0.0975 0.0831 0.0698 |
|
0.10 0.09 0.08 0.07 0.06 |
±0.006 ±0.006 ±0.006 ±0.005 ±0.004 |
0.007854 0.006362 0.005027 0.003848 0.002827 |
±10.0 ±10.0 ±11.0 ±11.0 ±11.0 |
180.8 223 283 369 502 |
17700 21830 27620 36100 49020 |
0.0565 0.0458 0.0362 0.0277 0.0204 |
156.6 193.4 245 320 436 |
17330 21370 27060 35340 48080 |
0.577 0.0468 0.0369 0.0283 0.0208 |
|
0.05 |
±0.004 |
0.001964 |
±12.0 |
723 |
70720 |
0.0141 |
626 |
69440 |
0.0144 |
Remark: Length and weight to be calculated in accordance with specific gravity7.20 & 7.35
UnitΩ/m
|
breadth(mm) thickness(mm) |
40 |
32 |
25 |
20 |
16 |
13 |
10 |
6.5 |
5 |
3.2 |
2.4 |
1.9 |
0.8 |
0.4 |
|
2.9 2.6 2.3 2.0 1.8 1.6 1.4 1.2 1.0 0.9 |
0.00950 0.01197 0.01530 0.01722 0.01967 0.0230 0.0276 |
0.01188 0.01325 0.01498 0.01722 0.01915 0.0215 0.0246 0.0287 0.0344 0.0383 |
0.01519 0.01695 0.01915 0.0220 0.0245 0.0276 0.0315 0.0367 0.0441 0.0489 |
0.01901 0.0212 0.0239 0.0276 0.0306 0.0344 0.0394 0.0460 0.0551 0.0612 |
0.0237 0.0265 0.0299 0.0344 0.0383 0.0430 0.0491 0.0574 0.0689 0.0765 |
0.0293 0.0326 0.0369 0.0424 0.0472 0.0605 0.0706 0.0848 0.0942 |
0.0380 0.0424 0.0480 0.0551 0.0621 0.0689 0.0787 0.0918 0.1102 0.1224 |
0.0680 0.0769 0.0884 0.0982 0.1104 0.1263 0.1473 0.1768 0.1964 |
0.0999 0.1149 0.1277 0.1436 0.1641 0.1915 0.230 0.255 |
0.359 0.399 |
0.478 0.532 |
|
|
|
|
0.8 0.7 0.6 0.5 0.45 0.40 0.35 0.32 0.29 0.26 |
|
0.0430 |
0.0551 0.0630 0.0735 0.0882 0.0979 |
0.0689 0.0787 0.0918 0.1102 0.1224 |
0.0861 0.0984 0.1148 0.1378 0.1530 0.1722 |
0.1060 0.1211 0.1414 0.1695 0.1885 0.212 0.242 0.265 |
0.1378 0.1574 0.1837 0.220 0.245 0.276 0.315 0.344 0.380 0.424 |
0.221 0.252 0.294 0.353 0.393 0.442 0.505 0.552 0.609 0.680 |
0.287 0.328 0.383 0.460 0.509 0.574 0.957 0.718 0.792 0.884 |
0.448 0.512 0.598 0.718 0.798 0.898 1.026 1.121 1.239 1.381 |
0.598 0.684 0.798 0.957 1.064 1.197 1.367 1.496 1.651 1.840 |
1.436 1.595 1.794 2.05 2.25 2.48 |