Jiangyin Chengxin Alloy Material Co., Ltd ，
Jiangsu Xiangcheng Supply Chain Management Co. LTD
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NiCrSi-NiSiMg Type N Thermocouple Wire Wide Temperature Range and Excellent Long-Term Performance
NiCrSi-NiSiMg Type N Thermocouple Wire is a high-precision, high-stability thermocouple, particularly well-suited for high-temperature, oxidizing, and corrosive environments. With a wide temperature range, excellent resistance to oxidation and sulfur, and minimal drift over time, it is ideal for demanding industrial applications such as gas turbines, aerospace, metal processing, and high-temperature scientific research. Despite being more expensive than other thermocouple types, its superior performance and longevity make it a worthwhile investment in extreme temperature conditions.
Thermocouple temperature range and tolerance
Name | Usag Classification | Grade | Max. operating temperature(℃) | emperitre nres) | Tnlerene | Standard | |
Lang term | Short term | ||||||
NiCrSi-NiSiMg (Type N) thermocouple bright wire | N | l | 1200 | 1300 | -40~1100 | ±1.5℃ or ±0.4%t | GB/T17615 IEC 584-1 |
| Ⅱ | -40~1300 | ±2.5℃ or ±0.75%t | |||||
| Name | NP | NN |
| Melting Range(℃) | 1410 | 1340 |
| Density(g/cm³) | 8.5 | .8.6 |
| Resistivity(μΩm20℃) | 100 | 33 |
| Resistance-temperture coefficient ×10-4/K(0℃-1200℃) | 0.78 | 14.9 |
| Tensile strength Rm N/mm² MPa | ≥620 | ≥550 |
| Elongation % | ≥30 | ≥35 |
Some key features of NiCrSi-NiSiMg Type N Thermocouple Wire include:
-200°C to 1300°C (-328°F to 2372°F).
Type N thermocouples are ideal for high-temperature measurements and can operate reliably at temperatures higher than other common thermocouple types like Type K or Type J.
Type N provides high accuracy and stability with a thermoelectric voltage that delivers a precise measurement. The tolerance is typically ±0.25°C in the lower temperature range and ±0.75% in the high-temperature range.
Positive Leg (NiCrSi): A nickel-chromium-silicon alloy that provides improved resistance to oxidation at high temperatures, especially in oxidative or corrosive environments.
Negative Leg (NiSiMg): A nickel-silicon-magnesium alloy that enhances resistance to oxidation and improves thermoelectric stability at high temperatures.
Type N has a low temperature coefficient and delivers stable voltage output over a broad temperature range, making it suitable for precision temperature measurements.
Both the NiCrSi and NiSiMg alloys are highly resistant to oxidation, even at elevated temperatures, making Type N thermocouples ideal for use in harsh or highly oxidative environments such as furnaces, gas turbines, and high-temperature industrial processes.
Exceptional long-term stability: Type N thermocouples offer superior stability over extended periods compared to other thermocouple types, especially in high-temperature applications.
Minimal drift: Type N is less prone to drift and degradation over time, which enhances reliability and reduces maintenance costs.
Type N thermocouples are non-magnetic, making them suitable for applications where magnetism can interfere with processes or measurements.
Excellent performance in sulfur-rich environments, which often cause rapid degradation in other thermocouple types like Type K or Type J.
Applications
Cable Options
