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Precious Metal Thermocouple Wire Type S

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Huona (Shanghai) New Material Co., Ltd.

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Precious Metal Thermocouple Wire Type S

Name: Precious Metal Thermocouple Wire Type S
Brand: Huona
Price: 1 USD

Brand Name : Huona

Model Number : Type S

Certification : ISO9001

Place of Origin : Shanghai

MOQ : 10g

Price : Negotiable

Payment Terms : T/T,L/C,Western Union,MoneyGram

Supply Ability : 30000 meters per month

Delivery Time : 5-21 days

Packaging Details : Carton/Wooden case

Product Name : Thermocouple Wire Type S

Positive : PtRh10

Negative : Pt

Anode wire density : 20 g/cm³

Cathode wire density : 21.45 g/cm³

Anode Wire Resistivity(20℃)/(μΩ·cm) : 18.9

Cathode Wire Resistivity(20℃)/(μΩ·cm) : 10.4

Tensile Strength(MPa) : SP:314; SN:137

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Product Overview

Precious metal thermocouple wire Type S, also known as Platinum-Rhodium 10-Platinum thermocouple wire, is a high-precision temperature sensing element composed of two precious metal conductors. The positive leg (RP) is a platinum-rhodium alloy containing 10% rhodium and 90% platinum, while the negative leg (RN) is pure platinum. It offers exceptional accuracy and stability in high-temperature environments, making it the preferred choice for precise temperature measurement in metallurgy, ceramics, and high-temperature industrial furnaces.

Standard Designations

Thermocouple Type: S-type (Platinum-Rhodium 10-Platinum)

IEC Standard: IEC 60584-1

ASTM Standard: ASTM E230

Key Features

Wide Temperature Range: Long-term use at up to 1300°C; short-term use up to 1600°C

High Accuracy: Class 1 accuracy with a tolerance of ±1.5°C or ±0.25% of reading

Excellent Stability: Less than 0.1% drift in thermoelectric potential after 1000 hours at 1000°C

Good Oxidation Resistance: Stable performance in oxidizing and inert atmospheres

Low Thermoelectric Potential: Generates 6.458 mV at 1000°C (reference junction at 0°C)

Technical Specifications

Attribute	Value
Wire Diameter	0.5mm (allowable deviation: -0.015mm)
Thermoelectric Power (1000°C)	6.458 mV (vs 0°C reference)
Long-Term Operating Temperature	1400°C
Short-Term Operating Temperature	1500°C (≤50 hours)
Tensile Strength (20°C)	≥120 MPa
Elongation	≥30%
Electrical Resistivity (20°C)	Positive leg: 0.21 Ω·mm²/m; Negative leg: 0.098 Ω·mm²/m

Chemical Composition (Typical, %)

Conductor	Main Elements	Trace Elements (max, %)
Positive Leg (Platinum-Rhodium 10)	Pt:90, Rh:10	Ir:0.02, Ru:0.01, Fe:0.005, Cu:0.002
Negative Leg (Pure Platinum)	Pt:≥99.99	Rh:0.005, Ir:0.002, Fe:0.001, Cu:0.001

Product Specifications

Item	Specification
Length per Spool	10m, 20m, 50m,
Surface Finish	Bright, annealed
Packaging	Vacuum-sealed in inert gas-filled containers to prevent contamination
Calibration	Traceable to national standards with calibration certificates
Custom Options	Custom lengths, special cleaning for high-purity applications

Typical Applications

High-temperature sintering furnaces in powder metallurgy

Glass manufacturing and forming processes

Ceramic kilns and heat treatment equipment

Vacuum furnaces and crystal growth systems

Metallurgical smelting and refining processes

We also provide S-type thermocouple assemblies, connectors, and extension wires. Free samples and detailed technical datasheets are available upon request. For critical applications, we offer additional certification of material purity and thermoelectric performance.

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