熱電偶材料的
物理性質
|
性質
|
J
鐵
|
J, C, T
康銅
|
T
銅
|
K, E
鎳鉻合金
|
K
鋁鎳合金
|
N
鎳鉻硅合金
|
N
鎳硅合金
|
R Pt13% Rh
|
S Pt10% Rh
|
R,S 鉑
|
B Pt30% Rh
|
B Pt6% Rh
|
熔點
（固相線溫度）
?C
?F
|
1490
2715
|
1220
2228
|
1083
1981
|
1427
2600
|
1399
2550
|
1420
2590
|
1330
2425
|
1860
3380
|
1850
3362
|
1769
3216
|
1927
3501
|
1826
3319
|
|
電阻率
μΩ·cm
0?C時
20?C時
Ω cmil/ft
0?C時
20?C時
|
8.57
9.67
51.5
58.2
|
48.9
48.9
294.2
294
|
1.56
1.724
9.38
10.37
|
70
70.6
421
425
|
28.1
29.4
169
177
|
97.4
97.8
|
32.5
34.6
|
19.0
19.6
114.3
117.7
|
18.4
18.9
110.7
114.0
|
9.83
10.4
59.1
62.4
|
19.0
114.5
|
17.5
106
|
電阻的溫度系數
Ω/Ω·
?C (0 ~ 100?C)
|
65 x 10-4
|
-0.1 x 10-4
|
43 x 10-4
|
4.1 x 10-4
|
23.9 x 10-4
|
13.3 x 10-4
|
12.1 x 10-4
|
15.6 x 10-4
|
16.6 x 10-4
|
39.2 x 10-4
|
13.3 x 10-4
|
20.6 x 10-4
|
熱膨脹系數
in./in. ?C
(20 ~ 100?C)
|
11.7 x 10-6
|
14.9 x 10-6
|
16.6 x 10-6
|
13.1 x 10-6
|
12.0 x 10-6
|
|
|
9.0 x 10-6
|
9.0 x 10-6
|
9.0 x 10-6
|
|
|
100?C時的導熱率
Cal·cm/s·cm2·?C
BTU·ft/h·ft2·?F
|
0.162
39.2
|
0.0506
12.2
|
0.901
218
|
0.046
11.1
|
0.071
17.2
|
0.0358
8.67
|
0.0664
16.07
|
0.088
21.3
|
0.090
21.8
|
0.171
41.4
|
|
|
20?C時的比熱，
cal/
g·?C
|
0.107
|
0.094
|
0.092
|
0.107
|
0.125
|
0.11
8.52
|
0.12
8.70
|
|
|
0.032
|
|
|
密度 g/cm3
lb/in3
|
7.86
0.284
|
8.92
0.322
|
8.92
0.322
|
8.73
0.315
|
8.60
0.311
|
0.3078
|
0.3143
|
19.61
0.708
|
19.97
0.721
|
21.45
0.775
|
17.60
0.636
|
20.55
0.743
|
抗張強度 （已退火 MPa
psi
|
345
50,000
|
552
80,000
|
241
35,000
|
655
95,000
|
586
85,000
|
690
100,000
|
621
90,000
|
317
46,000
|
310
45,000
|
138
20,000
|
483
483
|
276
40,000
|
|
磁吸引力
|
強
|
無
|
無
|
無
|
中
|
無
|
無
|
無
|
無
|
無
|
無
|
無
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
N=負極
P=正極
|
JP
|
JN,TN
ENa
|
TP
|
KP,
EP
|
KN
|
NP
|
NN
|
RP
|
SP
|
RN,
SN
|
BP
|
BN
|
|
元件
|
公稱化學成分，%
|
|
鐵
|
99.5
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
|
碳
|
b
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
|
錳
|
b
|
...
|
...
|
...
|
2
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
|
硫
|
b
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
|
磷
|
b
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
|
磷
|
b
|
...
|
...
|
...
|
1
|
1.4
|
4.4
|
...
|
...
|
...
|
...
|
...
|
|
鎳
|
b
|
45
|
...
|
90
|
95
|
84.4
|
95.5
|
...
|
...
|
...
|
...
|
...
|
|
銅
|
b
|
55
|
100
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
|
鉻
|
b
|
...
|
...
|
10
|
...
|
14.2
|
...
|
...
|
...
|
...
|
...
|
...
|
|
鋁
|
...
|
...
|
...
|
...
|
2
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
|
鉑
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
87
|
90
|
100
|
70.4
|
93.9
|
|
銠
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
13
|
10
|
...
|
29.6
|
6.1
|
|
銠
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
13
|
10
|
...
|
29.6
|
6.1
|
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
0.15
|
...
|
...
|
...
|
...
|
...
|
|
...
|
...
|
...
|
...
|
...
|
...
|
...
|
0.15
|
...
|
...
|
...
|
...
|
...
|
aJN、TN和EN型熱電偶通常包含少量的各種元素來控制熱電動勢，相應減少鎳成分或銅成分，或二者均減少。
b熱電鐵 (JP)包含少量這些元素，但含量不同。
