N type thermocouple wire
TYPE N (NiCrSi Vs.NiCrMg) is used in oxidizing, inert or dry reducing atmospheres. Exposure to vacuum limited to short time periods. Must be protected from sulfurous and marginally oxidizing atmospheres. Reliable and accurate at high temperatures.
1. Chemical Composition
Material | Chemical composition (%) | ||||
Ni | Cr | Si | Mg | Al | |
NP(NiCrSi) | bal | 13.7-14.7 | 1.2-1.6 | <0.01 |
|
NN(NiCrMg) | bal | <0.02 | 4.2-4.6 | 0.5~1.5 |
|
2. Physical properties and Mechnical properties
Material | Density (g/cm3) | Melting point℃ | Tensile Strength (Mpa) | Volume resistivity (μΩNaN) | Elongation rate (%) |
NP (NiCrSi) | 8.5 | 1410 | >620 | 100.0 (20℃) | >30 |
NN (NiCrMg) | 8.6 | 1340 | >550 | 33.0(20℃) | >35 |
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