N-Type thermocouple bare wire consists of two uninsulated conductors: a positive leg made of Nicrosil (nickel-chromium-silicon alloy) and a negative leg made of Nisil (nickel-silicon-magnesium alloy). Designed for high-temperature sensing in oxidizing environments, it offers excellent stability and accuracy across a wide temperature range. Ideal for industrial furnaces, heat treatment, and aerospace applications where direct thermal contact is required.​

Standard Designations​

Thermocouple Type: N-Type (Nicrosil-Nisil)​

IEC Standard: IEC 60584-1​

ANSI Standard: ANSI MC96.1​

Color Coding: Positive (NiCrSi) - orange; Negative (NiSi) - red (per IEC)​

Key Features​

Uninsulated design for direct heat transfer​

Wide temperature range with high stability​

Superior oxidation resistance at elevated temperatures​

Low drift rate for long-term measurement accuracy​

Compatible with standard N-Type connectors and extension wires​

Technical Specifications

Attribute​

Value​

Temperature Range​

-200°C to 1100°C (continuous); 1200°C (short-term)​

EMF Output at 1000°C​

36.256 mV (reference junction at 0°C)​

Accuracy​

Class 1: ±1.5°C or ±0.25% of reading (whichever is larger)​

Wire Diameters​

0.5mm, 0.8mm, 1.0mm, 1.5mm, 2.0mm, 3.2mm​

Tensile Strength (Nicrosil)​

650-750 MPa​

Tensile Strength (Nisil)​

600-700 MPa​

Resistance (20°C, 1.0mm)​

≤80 Ω/km​

Chemical Composition (Typical, %)

Component​

Positive Leg (Nicrosil)​

Negative Leg (Nisil)​

Nickel (Ni)​

84.0​

95.0​

Chromium (Cr)​

14.5​

0.0​

Silicon (Si)​

1.4​

4.4​

Magnesium (Mg)​

0.0​

0.1​

Iron (Fe)​

≤0.6​

≤0.6​

Manganese (Mn)​

≤0.3​

≤0.3​

Product Specifications

Item​

Specification​

Length per Spool​

50m, 100m, 300m, 500m​

Packaging​

Plastic spools with protective sleeves​

Surface Finish​

Annealed, oxide-free surface​

Identification​

Color-coded ends and spool labeling​

Customization Options​

Cut-to-length, special cleaning, custom diameters​

We also supply insulated N-Type thermocouple wires, thermocouple probes, and calibration services. Free samples and technical datasheets are available upon request. Custom solutions can be tailored to specific high-temperature application requirements.​

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Attribute	Value
Temperature Range	-200°C to 1100°C (continuous); 1200°C (short-term)
EMF Output at 1000°C	36.256 mV (reference junction at 0°C)
Accuracy	Class 1: ±1.5°C or ±0.25% of reading (whichever is larger)
Wire Diameters	0.5mm, 0.8mm, 1.0mm, 1.5mm, 2.0mm, 3.2mm
Tensile Strength (Nicrosil)	650-750 MPa
Tensile Strength (Nisil)	600-700 MPa
Resistance (20°C, 1.0mm)	≤80 Ω/km

Component	Positive Leg (Nicrosil)	Negative Leg (Nisil)
Nickel (Ni)	84.0	95.0
Chromium (Cr)	14.5	0.0
Silicon (Si)	1.4	4.4
Magnesium (Mg)	0.0	0.1
Iron (Fe)	≤0.6	≤0.6
Manganese (Mn)	≤0.3	≤0.3

Item	Specification
Length per Spool	50m, 100m, 300m, 500m
Packaging	Plastic spools with protective sleeves
Surface Finish	Annealed, oxide-free surface
Identification	Color-coded ends and spool labeling
Customization Options	Cut-to-length, special cleaning, custom diameters