T type thermocouple wire
TYPE T (Copper vs Constantan) is used or service in oxidizing, inert or reducing atmospheres or in vacuum. It is highly resistant to corrosion from atmospheric moisture and condensation and exhibits high stability at low temperatures. It is the only type with limits of error guaranteed for cryogenic temperatures.
1. Chemical Composition
Material | Chemical composition (%) | ||||
Ni | Cr | Cu | Mn | Al | |
TP(Copper) |
|
| 100 |
|
|
TN(Constantan) | 45 |
| 55 |
|
|
2. Physical properties and Mechnical properties
Material | Density(g/cm3) | Melting point(℃) | Tensile Strength(Mpa) | Volume resistivity(μΩNaN) | Elongation rate (%) |
TP(Copper) | 8.9 | 1084 | >196 | 1.71(20℃) | >30 |
TN(Constantan) | 8.8 | 1220 | >390 | 49.0(20℃) | >25 |
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