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Constantan Thermocouple Bare Wire

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China Ohmalloy Material Co.,Ltd certification
China Ohmalloy Material Co.,Ltd certification
I search for Nichrome plate long time, and successfully bought it from Ohmalloy material. OHMALLOY provide real good service in alloy service and can always help me in finding the correct resistance alloy.

—— Mike Harness

OHMALLOY can provie me only 1kg Kovar alloy wire 1.0mm with short time, that is really amazing. Thanks

—— Janey

Really professional in thermocouple wire and cable, what i want just can get from OHMALLOY

—— Chris

Enamelled Constantan 0.08mm, i never expect to get only 2kg of it. But OHMALLOY supply it to me with good quality. God Jesus! Such a reliable supplier from china

—— Aaron

Constantan Thermocouple Bare Wire

Constantan Thermocouple Bare Wire
Constantan Thermocouple Bare Wire
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Large Image :  Constantan Thermocouple Bare Wire Get Best Price

Product Details:
Place of Origin: China
Brand Name: OHMALLOY
Certification: ISO9001:2018
Model Number: SP-EX-BW
Payment & Shipping Terms:
Minimum Order Quantity: 50KG
Packaging Details: Spool+Plywood case
Delivery Time: 7-25 working days after payment confirmed
Payment Terms: L/C, T/T, Western Union, MoneyGram,Paypal
Supply Ability: 10 Tons per Month
Detailed Product Description
Name: Type E Chromel Constantan Thermocouple Bare Wire Conductor Material: Chromel Constantan(Ni90Cr10,Cu55Ni45)
Type: Type E Thermocouple Bare Wire Wire Size Range: 0.08-12mm
Accuracy: Class 1 Surface: Bright Or Oxidized
Package: Spool Or Coil
High Light:

Constantan Thermocouple Bare Wire


Type E Chromel Thermocouple Bare Wire


Oxidized Thermocouple Bare Wire


TYPE E (CHROMEL vs Constantan) may be used in oxidizing, inert or dry reducing atmospheres, or for short periods of time under vacuum. Must be protected from sulfurous and marginally oxidizingatmospheres. Produces the highest EMF per degree o any standardized thermocouple.


1. Chemical Composition


Material Chemical composition (%)
Ni Cr Cu Mn Al
EP(Chromel) 90 10      
EN(Constantan) 45   55    

Constantan Thermocouple Bare Wire 0



2. Physical properties and Mechanical properties









Melting point℃)


Tensile Strength(Mpa)


Volume resistivity(μΩ.cm)


Elongation rate (%)

EP(Chromel) 8.5 1427 >490 70.6(20℃) >25
EN(Constantan) 8.8 1220 >390 49.0(20℃) >25


3. EMF Value range at different temperature

Material EMF value Vs Pt(μV)
100℃ 200℃ 300℃ 400℃ 500℃ 600℃
KP(Chromel) 2769~2859 5921~6019 9272~9374 12709~12819 16144~16282 19537~19699
EN(Constantan) 3499~3561 7389~7513 11647~11779 16109~16255 20699~20885 25362~25588



EMF value Vs Pt(μV)
700℃ 800℃ 900℃ 1000℃ 1100℃
22859~23043 26102~26308      
30030~30292 34664~34960      

Contact Details
Ohmalloy Material Co.,Ltd

Contact Person: Sparrow

Tel: +8613456001145

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