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0.5mm / 0.8mm Type T Copper Constantan Alloy Thermocouple Bare Wire Grade I

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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

0.5mm / 0.8mm Type T Copper Constantan Alloy Thermocouple Bare Wire Grade I


Large Image :  0.5mm / 0.8mm Type T Copper Constantan Alloy Thermocouple Bare Wire Grade I Get Best Price

Product Details:
Place of Origin: China(Shanghai)
Brand Name: OHMALLOY
Certification: ISO9001-2008
Model Number: T -BW-1214
Payment & Shipping Terms:
Minimum Order Quantity: 10Kg
Price: negotiable
Packaging Details: 5kgs/spool, 10kgs/spool, 20kgs/spool, carton/wooden.
Delivery Time: 5-10 working days
Payment Terms: L/C, T/T,
Supply Ability: 500000kgs/month
Detailed Product Description
Conductor: Copper/Constantan Alloy Conductor Dia: 0.5/0.8mm
Surface: Bright Package: 10kgs/spool, 20kgs/spool
Standard: ANSI96.1 Or IEC 584-2
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thermocouple bare wire


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0.5mm/0.8mm Type T Copper/ Constantan Alloy thermocouple bare wire Grade I


TYPE T (Copper vs Constantan) is used or service in oxidizing, inert or reducing atmospheres or in vacuum. It is highly resistant to corrosion from atmospheric moisture and condensation and exhibits high stability at low temperatures. It is the only type with limits of error guaranteed for cryogenic temperatures.


1. EMF Value range at different temperature


Material EMF value Vs Pt(μV)
-196℃ -79℃ 100℃ 150℃ 200℃ 250℃
TP(Chromel) -212 -332 761~785 1263~1287 1825~1849 2450~2474
TN(Constantan) -5327 -2426 3493~3517 5412~5448 7420~7582 9507~9595


EMF value Vs Pt(μV)
300℃ 350℃ 400℃ 500℃ 600℃
3137~3161 3880~3904      
11655~11771 13864~13988    



2.Chemical Composition


Material Chemical composition (%)
Ni Cr Cu Mn Al
TP(Copper)     100    
TN(Constantan) 45   55    



3. Physical properties and Mechnical properties









Melting point(℃)


Tensile Strength(Mpa)


Volume resistivity(μΩ.cm)


Elongation rate (%)

TP(Chromel) 8.9 1084 >196 1.71(20℃) >30
TN(Constantan) 8.8 1220 >390 49.0(20℃) >25






0.5mm / 0.8mm Type T Copper Constantan Alloy Thermocouple Bare Wire Grade I 00.5mm / 0.8mm Type T Copper Constantan Alloy Thermocouple Bare Wire Grade I 1







1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you want.
If we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.

2. How can you pay for small sample amount?
We have account, wire transfer for sample amount also ok.

3. Customer do not have express account. How will us arrange the delivery for sample order?
Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.

4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.

5. Do you provide free samples?
If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.

6. What's our working time?
We will give you reply through email/phone Online contact tool within 24 hours. No matter working day or holidays.

Contact Details
Ohmalloy Material Co.,Ltd

Contact Person: Kelly

Tel: +8613795230939

Send your inquiry directly to us