牌号 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | | 性能 | | | | | | | 主要化学成分% | Ni | 余量 | 余量 | 55.0～61.0 | 34.0～37.0 | 30.0～34.0 | | Cr | 20.0～23.0 | 28.0～31.0 | 15.0～18.0
| 18.0～21.0 | 18.0～21.0 | | Fe | ≤1.0
| ≤1.0
| 余量 | 余量 | 余量 | 元件最高使用温度℃
| 1200 | 1250 | 1150 | 1100 | 1100 | 熔点℃
| 1400 | 1380 | 1390 | 1390 | 1390 | 密度g/cm3
| 8.40 | 8.10 | 8.20 | 7.90 | 7.90 | 电阻率μΩ·m，20℃
| 1.09±0.05
| 1.18±0.05
| 1.12±0.05
| 1.04±0.05
| 1.04±0.05 | 延伸率%
| ≥20
| ≥20
| ≥20
| ≥20
| ≥20 | 比热J/g.℃
| 0.440
| 0.461
| 0.494
| 0.500
| 0.500 | 导热系数KJ/m.h℃
| 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | 线胀系数a×10-6/℃（20～1000℃）
| 18.0 | 17.0 | 17.0 | 19.0 | 19.0 | 显微组织
| 奥氏体 | 奥氏体 | 奥氏体 | 奥氏体 | 奥氏体 | | 磁性 | 非磁性 | 非磁性 | 非磁性 | 非磁性 | 非磁性 |
镍铬丝设计参数 | 线 径
(mm) | 截面积
(mm2) | 每米
表面积
cm2/m | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | 每米重量
kg/m | 每米电阻
Ω/m,20℃ | 每米重量
kg/m | 每米电阻
Ω/m,20℃ | 每米重量
kg/m | 每米电阻
Ω/m,20℃ | 0.10
| 0.007854 | 3.142 | 0.00006597 | 138.8 | 0.00006362 | 150.2
| 0.00006440 | 142.6
| 0.12 | 0.01131 | 3.770 | 0.00009500 | 96.38 | 0.00009161
| 104.3
| 0.00009274
| 99.03
| 0.15 | 0.01767 | 4.712 | 0.0001484 | 61.68 | 0.0001431
| 66.77
| 0.0001449
| 63.38
| 0.17 | 0.02270 | 5.341 | 0.0001907 | 48.02 | 0.0001839
| 51.99
| 0.0001861
| 49.34
| 0.19 | 0.02835 | 5.969 | 0.0002382 | 38.44 | 0.0002297
| 41.62
| 0.0002325
| 39.50
| 0.21 | 0.03464 | 6.597 | 0.0002909 | 31.47 | 0.0002806
| 34.07
| 0.0002840
| 32.34
| 0.25 | 0.04909 | 7.854 | 0.0004123 | 22.21 | 0.0003976
| 24.04
| 0.0004025
| 22.82
| 0.27 | 0.05726 | 8.482 | 0.0004809 | 19.04 | 0.0004638
| 20.61
| 0.0004695
| 19.56
| 0.29 | 0.06605 | 9.111 | 0.0005548 | 16.50 | 0.0005350
| 17.86
| 0.0005416
| 16.96
| 0.31 | 0.07548 | 9.739 | 0.0006340 | 14.44 | 0.0006114
| 15.63
| 0.0006189
| 14.84
| 0.35 | 0.09621 | 11.00 | 0.0008082 | 11.33 | 0.0007793
| 12.26
| 0.0007889
| 11.64
| 0.40 | 0.1257 | 12.57 | 0.001056 | 8.674 | 0.001018
| 9.390
| 0.001030
| 8.913
| 0.45 | 0.1590 | 14.14 | 0.001339 | 6.835 | 0.001288
| 7.419
| 0.001304
| 7.042
| 0.50 | 0.1963 | 15.71 | 0.001469 | 5.551 | 0.001590
| 6.010
| 0.001610
| 5.704
| 0.60 | 0.2827 | 18.85 | 0.002375 | 3.855 | 0.002290
| 4.173
| 0.002318
| 3.961
| 0.70 | 0.3848 | 21.99 | 0.003233 | 2.832 | 0.003117
| 3.066
| 0.003156
| 2.910
| 0.80 | 0.5027 | 25.13 | 0.004222 | 2.168 | 0.004072
| 2.348
| 0.004122
| 2.228
| 0.90 | 0.6362 | 28.27 | 0.005344 | 1.713 | 0.005153
| 1.855
| 0.005217
| 1.761
| 1.00 | 0.7854 | 31.42 | 0.006597 | 1.388 | 0.006362
| 1.502
| 0.006440
| 1.426
| 1.20 | 1.131 | 37.70 | 0.009500 | 0.9638 | 0.009161
| 1.043
| 0.009274
| 0.9903
| 1.40 | 1.539 | 43.98 | 0.01293 | 0.7081 | 0.01247
| 0.7665
| 0.01262
| 0.7276
| 1.60 | 2.011 | 50.27 | 0.01689 | 0.5421 | 0.01629
| 0.5869
| 0.01649
| 0.5570
| 1.80 | 2.545 | 56.55 | 0.02138 | 0.4283 | 0.02061
| 0.4637
| 0.02087
| 0.4401
| 2.00 | 3.142 | 62.83 | 0.02639 | 0.3470 | 0.02545
| 0.3756
| 0.02576
| 0.3565
| 2.20 | 3.801 | 69.12 | 0.03139 | 0.2867 | 0.03079
| 0.3104
| 0.03117
| 0.2946 | 2.50 | 3.976 | 70.69 | 0.03340 | 0.2741 | 0.03221
| 0.2968
| 0.03260
| 0.2817
| 2.80 | 6.158 | 87.96 | 0.05172 | 0.1770 | 0.04988 | 0.1916
| 0.05049
| 0.1819
| 3.00 | 7.069 | 94.25 | 0.05938 | 0.1542 | 0.05726
| 0.1669
| 0.05796
| 0.1584
| 3.50 | 9.621 | 110.0 | 0.08082 | 0.1133 | 0.07793
| 0.1226 | 0.07889 | 0.1164
| 4.00 | 12.57 | 125.7 | 0.1056 | 0.08674 | 0.1018
| 0.09390
| 0.1030
| 0.08913
| 4.50 | 15.90 | 141.4 | 0.1336 | 0.06853 | 0.1288
| 0.07419
| 0.1304
| 0.07042
| 5.00 | 19.63 | 157.1 | 0.1649 | 0.05551 | 0.1590
| 0.06010
| 0.1610
| 0.05704
| 5.50 | 23.76 | 172.8 | 0.1996 | 0.04588 | 0.1924
| 0.04967
| 0.1948
| 0.04714
| 6.00 | 28.27 | 188.5 | 0.2375 | 0.03855 | 0.2290
| 0.04173
| 0.2318
| 0.03961
| 6.50 | 33.18 | 204.2 | 0.2787 | 0.03285 | 0.2688
| 0.03556
| 0.2721
| 0.03375
| 7.00 | 38.48 | 219.9 | 0.3233 | 0.02832 | 0.3117 | 0.03066 | 0.3156 | 0.02910 |
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