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Type N Thermocouple Alloy Strip (NP/NN, 0.20×25mm)
Type N thermocouple alloy strip (NP/NN, 0.20mm × 25mm) from Huona New Material is a precision cold-rolled alloy strip designed for high-stability Type N thermocouple sensors and industrial temperature probes. Composed of NP (Nicrosil, positive pole) and NN (Nisil, negative pole) alloy pairs, it delivers superior thermoelectric stability, excellent oxidation resistance, and consistent performance across high-temperature industrial environments.
Standard Designations & Core Specifications
Product Name: Type N Thermocouple Alloy Strip (NP/NN)
Manufacturer: Huona New Material (Shanghai) Co., Ltd.
Key Core Advantages
Superior Thermoelectric Stability
Minimal Drift at High Temperatures: Compared to Type K, Type N alloy exhibits significantly lower thermoelectric drift at >1000℃, ensuring long-term measurement accuracy in industrial furnaces and power plants.
Wide Temperature Compatibility: Performs reliably from cryogenic (-270℃) to ultra-high-temperature (1300℃) environments, outperforming Type K in high-temperature stability.
Excellent High-Temperature Oxidation Resistance
Dense Protective Oxide Layer: NP/NN alloys form a stable SiO₂-rich oxide layer at high temperatures, preventing internal oxidation and extending service life in oxidizing atmospheres.
Resistance to Green Rot: Avoids the "green rot" degradation issue common in Type K thermocouples at 800-1000℃, making it ideal for long-term high-temperature monitoring.
Uniform Mechanical & Thermoelectric Consistency
Precision Cold Rolling: Tight thickness/width tolerances ensure uniform thermoelectric response across the entire coil, critical for batch production of consistent sensors.
Vacuum Annealing: Removes residual stress and refines grain structure, ensuring stable mechanical properties and preventing warping during thermal cycling.
Versatile Formability & Joining
Balanced Strength & Ductility: Tensile strength ≥600MPa, elongation ≥25%, enabling easy stamping, bending, and laser cutting into complex probe shapes.
Weldability: Compatible with resistance welding, laser welding, and brazing, ensuring reliable junction formation for industrial sensors.
Harsh Environment Durability
Corrosion Resistance: Excellent resistance to atmospheric corrosion, flue gas, and mild chemical exposure, suitable for petrochemical, power generation, and waste incineration applications.
Fatigue Resistance: Withstands repeated thermal cycling without cracking or performance degradation, ideal for dynamic industrial processes.
Technical Specifications
Attribute
Value (Typical)
Alloy Grade
NP (Nicrosil) / NN (Nisil)
Thickness
0.20mm (±0.005mm)
Width
25mm (±0.1mm)
Form
Coil (100m standard) / Cut-to-size sheets
Thermoelectric Power (100℃)
~27.7μV/℃ (IEC Class 1)
Operating Temperature
-270℃ ~ 1300℃ (continuous)
Tensile Strength
≥600MPa (NP/NN)
Elongation
≥25% (NP/NN)
Density
~8.2g/cm³ (NP), ~8.0g/cm³ (NN)
Surface Finish
Bright pickled (standard)
Product Specifications
Item
Specification
Supply Form
Coil (100m/roll); custom cut-to-size sheets available
Dimensions
0.20mm (T) × 25mm (W)
Surface Treatment
Bright pickled / electro-polished (optional)
Packaging
Anti-oxidation paper + wooden reel (vacuum-sealed for long-term storage)
Power Generation Monitoring: Temperature probes for boiler superheaters, turbine exhaust, and waste heat recovery systems.
Industrial Furnace Control: Long-term high-temperature measurement in steel reheat furnaces, annealing furnaces, and glass melting kilns.
Petrochemical & Refining: Temperature sensors for catalytic crackers, reformers, and flue gas monitoring.
Aerospace & Cryogenics: Temperature sensing in rocket engine components, satellite thermal control, and cryogenic storage systems.
Laboratory R&D: Precision high-temperature measurement in material testing, thermal analysis, and scientific research instruments.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2008
Total Annual:
8000000-100000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, hig... Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, hig...
