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Type K Thermocouple Bare Wire KP KN 2.0mm Diameter Heavy Duty Grade High

China Type K Thermocouple Bare Wire KP KN 2.0mm Diameter Heavy Duty Grade High

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Type K Thermocouple Bare Wire KP KN 2.0mm Diameter Heavy Duty Grade High

MOQ： 10KG
Price： Negotiable
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Payment Terms	L/C,T/T,Western Union
Supply Ability	500 tons per month
Delivery Time	5-21 days
Packaging Details	Carton/Wooden case
Alloy Grade	Type K
Diameter	2.0mm (±0.02mm)
Form	Coil
Accuracy Class	Accuracy Class
Operating Temperature	-200°C ~ 1260°C (continuous)
Tensile Strength	≥700 MPa (KP/KN)
Elongation	≥20%
Surface Finish	Dark, pre-oxidized finish
Brand Name	Huona
Model Number	Type K
Certification	ISO9001
Place of Origin	Shanghai

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Product Details
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Product Specification


Payment Terms	L/C,T/T,Western Union	Supply Ability	500 tons per month
Delivery Time	5-21 days	Packaging Details	Carton/Wooden case
Alloy Grade	Type K	Diameter	2.0mm (±0.02mm)
Form	Coil	Accuracy Class	Accuracy Class
Operating Temperature	-200°C ~ 1260°C (continuous)	Tensile Strength	≥700 MPa (KP/KN)
Elongation	≥20%	Surface Finish	Dark, pre-oxidized finish
Brand Name	Huona	Model Number	Type K
Certification	ISO9001	Place of Origin	Shanghai
High Light	Type K thermocouple bare wire ，KP KN thermocouple wire 2.0mm ，heavy duty thermocouple wire

Type K Thermocouple Bare Wire (KP/KN) – 2.0mm Diameter Heavy-Duty Grade

Product Overview

This heavy-gauge Type K thermocouple bare wire from Huona is a robust, industrial-grade thermoelectric pair, purpose-built for long-term, continuous high-temperature monitoring. Composed of KP (Chromel, positive leg) and KN (Alumel, negative leg), this thick wire is engineered to resist oxidation, thermal fatigue, and mechanical stress in the harshest industrial environments. Unlike finer gauges, its substantial cross-section drastically slows the aging process, ensuring stable readings and extended service life in demanding applications.

Core Specifications

Product Name: Type K Thermocouple Bare Wire (KP/KN Pair, Heavy-Duty)
Alloy Composition:
- KP (Positive Leg): Chromel (Ni: ~90%, Cr: ~10%)
- KN (Negative Leg): Alumel (Ni: ~95%, Al: ~2%, Mn: ~2%, Si: ~1%)
Diameter: 2.0mm (customizable: 1.5–4.0mm)
Tolerance: ±0.02mm
Form: Coil (standard length: 50m/leg; custom lengths available)
Thermoelectric Performance:
- Accuracy Class: IEC Class 1 (±1.5°C or ±0.4% of reading, whichever is greater)
- Thermoelectric Power: ~40.5 µV/°C at 100°C
Operating Temperature Range: -200°C ~ 1260°C (continuous use; optimized for 800–1200°C long-term service)
Standards Compliance: IEC 60584-1, ASTM E230, GB/T 4989, RoHS 2.0
Manufacturer: Huona (Shanghai) New Material Co., Ltd.

Key Differentiating Advantages

1. Drastically Extended Service Life in Oxidizing Environments

The 2.0mm diameter provides a much larger volume of material, significantly slowing down oxidation and the infamous "green rot" degradation common in K-type wires above 800°C. This translates to 2–3 times longer service life compared to 0.5–1.0mm wires in the same conditions, reducing costly downtime and replacements.

2. Superior Mechanical Strength & Vibration Resistance

With a high tensile strength and robust cross-section, this wire is virtually immune to sagging, stretching, and breakage in vertical furnace installations or high-vibration environments like gas turbines and cement kilns. It eliminates the "wire fatigue" issues that plague finer gauges.

3. Minimal Drift & Ultra-Stable Long-Term Readings

The larger material volume acts as a buffer against contamination and grain structure changes, resulting in minimal thermoelectric drift. This ensures process control remains accurate and consistent over thousands of operating hours, critical for maintaining product quality.

4. Versatile for Rugged Probe Assembly

The thick diameter is ideal for constructing heavy-duty, high-temperature thermocouple probes. It provides ample material for robust weld junctions and is perfectly suited for use with large ceramic or metal protection tubes, making it a go-to for industrial OEMs.

5. Cost-Effective for Continuous Processes

While the upfront cost is higher than fine wire, the extended lifespan and reduced maintenance frequency make this heavy-duty grade far more economical for 24/7 operations in power plants, steel mills, and chemical facilities.

Technical Specifications Table

Attribute	Value (Typical)
Alloy Grade	KP (Chromel) / KN (Alumel)
Diameter	2.0mm (±0.02mm)
Form	Coil
Accuracy Class	IEC Class 1
Operating Temperature	-200°C ~ 1260°C (continuous)
Tensile Strength	≥700 MPa (KP/KN)
Elongation	≥20%
Surface Finish	Dark, pre-oxidized finish (optimized for high-temperature use)
Packaging	Moisture-proof, anti-oxidation coil packaging

Typical Applications

Steel & Metal Processing: Continuous monitoring in reheating furnaces, annealing ovens, and sintering plants.
Power Generation: Boiler, superheater, and exhaust gas temperature monitoring in coal-fired and gas-fired power stations.
Cement & Kiln Operations: High-temperature sensing in rotary kilns and clinker coolers.
Petrochemical Refining: Process heater and reformer temperature control in harsh environments.
Heavy Industrial OEM: Core material for manufacturing robust, long-life thermocouple probes for industrial machinery.

Company Details

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Business Type:

Manufacturer,Exporter 
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Year Established:

2008 
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Total Annual:

8000000-100000000
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Employee Number:

100~120 
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Ecer Certification：

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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...

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