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本公司生产各类电阻丝、电阻带。 |
l 高电阻电热合金电阻温度因数(修正系数)
|
合金牌号 |
20℃ |
100℃ |
200℃ |
300℃ |
400℃ |
500℃ |
600℃ |
700℃ |
800℃ |
900℃ |
1000℃ |
1100℃ |
1200℃ |
1300℃ |
|
Cr20Ni80 |
1.000 |
1.006 |
1.012 |
1.018 |
1.025 |
1.026 |
1.018 |
1.010 |
1.008 |
1.010 |
1.014 |
1.021 |
1.025 |
-
|
|
Cr30Ni70 |
1.000 |
1.007 |
1.016 |
1.028 |
1.038 |
1.044 |
1.036 |
1.030 |
1.028 |
1.029 |
1.033 |
1.037 |
1.043 |
- |
|
Cr15Ni60 |
1.000 |
1.011 |
1.024 |
1.038 |
1.052 |
1.064 |
1.069 |
1.073 |
1.078 |
1.088 |
1.095 |
1.109 |
- |
- |
|
Cr20Ni35 |
1.000 |
1.029 |
1.061 |
1.090 |
1.115 |
1.139 |
1.157 |
1.173 |
1.188 |
1.208 |
1.219 |
1.228 |
- |
- |
|
Cr20Ni30 |
1.000 |
1.023 |
1.052 |
1.079 |
1.103 |
1.125 |
1.141 |
1.158 |
1.173 |
1.187 |
1.201 |
1.214 |
1.226 |
- |
|
1Cr13Al4 |
1.000 |
1.005 |
1.014 |
1.028 |
1.044 |
1.064 |
1.090 |
1.120 |
1.132 |
1.142 |
1.150 |
- |
- |
- |
|
0Cr25Al5 |
1.000 |
1.002 |
1.005 |
1.008 |
1.013 |
1.021 |
1.030 |
1.038 |
1.040 |
1.042 |
1.044 |
1.046 |
1.047 |
- |
|
0Cr23Al5 |
1.000 |
1.002 |
1.007 |
1.014 |
1.024 |
1.036 |
1.056 |
1.064 |
1.070 |
1.074 |
1.078 |
1.081 |
1.084 |
-
|
|
0Cr21Al6 |
1.000 |
1.000 |
1.002 |
1.006 |
1.011 |
1.020 |
1.037 |
1.043 |
1.046 |
1.049 |
1.052 |
1.055 |
1.058 |
- |
|
1Cr20Al3 |
1.000 |
1.011 |
1.025 |
1.042 |
1.061 |
1.085 |
1.120 |
1.142 |
1.154 |
1.164 |
1.172 |
1.180 |
1.186 |
- |
|
0Cr21Al6Nb |
1.000 |
0.997 |
0.996 |
0.994 |
0.991 |
0.990 |
0.990 |
0.990 |
0.990 |
0.990 |
0.990 |
0.990 |
0.990 |
- |
|
0Cr27Al7Mo2 |
1.000 |
0.992 |
0.986 |
0.981 |
0.978 |
0.976 |
0.974 |
0.972 |
0.970 |
0.969 |
0.968 |
0.968 |
0.967 |
0.967 |
电热合金主要物理性能
|
性能
合金牌号 |
元件最高使用温度℃ |
熔点
(近似)℃ |
密度
g/cm3 |
电阻率(20℃)μΩ●m |
比热
J/g●℃ |
导热系数
kJ/m●h●℃ |
平均线膨胀系数(20～1000℃)α×10-6/℃ |
组织 |
磁性 |
|
Cr20Ni80 |
1200 |
1400 |
8.40 |
1.09 |
0.440 |
60.3 |
18.0 |
奥氏体 |
非磁性 |
|
Cr30Ni70 |
1250 |
1380 |
8.10 |
1.18 |
0.461 |
45.2 |
17.0 |
奥氏体 |
非磁性 |
|
Cr15Ni60 |
1150 |
1390 |
8.20 |
1.12 |
0.494 |
45.2 |
17.0 |
奥氏体 |
非磁性 |
|
Cr20Ni35 |
1100 |
1390 |
7.90 |
1.04 |
0.500 |
43.8 |
19.0 |
奥氏体 |
弱磁性 |
|
Cr20Ni30 |
1100 |
1390 |
7.90 |
1.04 |
0.500 |
43.8 |
19.0 |
奥氏体 |
弱磁性 |
|
1Cr13Al4 |
950 |
1450 |
7.40 |
1.25 |
0.490 |
52.7 |
15.4 |
铁素体 |
磁 性 |
|
0Cr25Al5 |
1250 |
1500 |
7.10 |
1.42 |
0.494 |
46.1 |
16.0 |
铁素体 |
磁 性 |
|
0Cr23Al5 |
1250 |
1500 |
7.25 |
1.35 |
0.460 |
60.2 |
15.0 |
铁素体 |
磁 性 |
|
0Cr21Al6 |
1250 |
1500 |
7.16 |
1.42 |
| | |
