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| Properties of Thermoelement Material | ||||||||||
| Property | JP | JN, EN, TN | TP | KP, EP | KN | RP | SP | RN, SN | BP | BN |
| Melting point (solids
temperatures) ºC ºF |
1,490 2,715 |
1,220 2,228 |
1,083 1,981 |
1,427 2,600 |
1,399 2,550 |
1,860 3,380 |
1,860 3,362 |
1,769 3,216 |
1,927 3,501 |
1,826 3,319 |
| Resistivity: µW-cm: at 0ºC at 20ºC W cmil/ft: at 0ºC at 20ºC |
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 |
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 |
| Temperature
coefficient of resistance, W/W ºC (0 to 100ºC) |
65
x 10^ -4 |
-0.7
x 10^ -4 |
43
x 10^ -4 |
4.1
x 10^ -4 |
23.9 x 10^ -4 |
15.6
x 10^ -4 |
16.6
x 10^ -4 |
39.2
x 10^ -4 |
13.3
x 10^ -4 |
20.0
x 10^ -4 |
| Coefficient
of thermal expansion, in./in. ºC (20 to 100ºC) |
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 |
-- | -- |
| Thermal conductivity at 100ºC: Cal. cm/s cm² . ºC Btu . ft/h ft² . ºF |
0.162 39.2 |
0.0506 12.2 |
0.901 218 |
0.046 11.1 |
0.071 17.2 |
0.088 21.3 |
0.090 21.8 |
0.171 41.4 |
- - |
- - |
| Specific heat at 20ºC cal/g ºC |
0.107 |
0.094 |
0.092 |
0.107 |
0.125 |
- |
- |
0.032 |
- |
- |
| Density: g/cm³ lb/in³ |
7.86 0.284 |
8.92 0.322 |
8.92 0.322 |
8.73 0.315 |
8.60 0.311 |
19.61 0.708 |
19.97 0.721 |
21.45 0.775 |
17.60 0.626 |
20.55 0.743 |
| Tensile strength
(annealed): kgf/cm² psi |
3,500 50,000 |
5,600 80,000 |
2,500 35,000 |
6,700 95,000 |
6,000 85,000 |
3,200 46,000 |
3,200 45,000 |
1,400 20,000 |
4,900 70,000 |
2,800 40,000 |
| Magnetic attraction | strong | none | none | none | moderate | none | none | none | none | none |
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