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Home ProductsBare Thermocouple Wire

KP / KN Thermocouple Extension Wire 0.25mm Type K Bare Cable Alloy 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

KP / KN Thermocouple Extension Wire 0.25mm Type K Bare Cable Alloy Wire

KP / KN Thermocouple Extension Wire 0.25mm Type K Bare Cable Alloy Wire
KP / KN Thermocouple Extension Wire 0.25mm Type K Bare Cable Alloy Wire

Large Image :  KP / KN Thermocouple Extension Wire 0.25mm Type K Bare Cable Alloy Wire Get Best Price

Product Details:
Place of Origin: China(Shanghai)
Brand Name: OHMALLOY
Certification: ISO9001-2008
Model Number: K-HP-5082
Payment & Shipping Terms:
Minimum Order Quantity: 500 meters
Price: negotiable
Packaging Details: 100m/spool, 305m/spool, 1000ft/spool, 1000m/spool
Delivery Time: 7 -15 days
Payment Terms: L/C, T/T, Paypal,, MoneyGram, D/A, D/P
Supply Ability: 500000 meters per month
Detailed Product Description
Material: NiCr / NiAl Insulation: Bare Wire
Diameter: 0.25mm Color: Bright
High Light:

thermocouple bare wire


thermocouple extension wire

KP/KN Thermocouple Extension Wire 0.25mm type K bare cable alloy wire


The thermocouple alloy wire is a kind of alloy wire, the thermocouple wire are of high thermo electromotive force, coordinated linear relation between temperature and thermo electromotive force; excellent property uniformity, high stability, superior possibility and oxidation resistance which can be used widely in thermometry of metallurgy, machinery, electricity, petroleum, chemical, national defense, etc.


OHMALLOY cable factory have 30 years in producing the thermocouple extension or compensation cable. We use our own thermocouple conductor to produce all kinds of insulated thermocouple wire and cable, Resistance Temperature Detector (RTD) cables. Working temperature range is -60 degree to +1100 degrees. According to customer request, we supply professional wire and cable solution. The size of wire is 0.05-10mm, AWG0-AWG40.

  • Type: K, E, J, T, N, etc
  • Style: bright or oxidized
  • Application: forming two hot electrodes of thermocouple or compensating cable
  • Place of Origin: Jiangsu, China (Mainland)
  • Brand Name: Thermocouple wire
  • Product Size: 0.05mm to 10.0mm
  • Delivery time: 7-20days which is according to quantity
  • Eco-friendly: Yes
  • MOQ: 1kgs
  • Trade term: FOB, EXW, CIF, CFR
  • Payment term: T/T, , L/C
  • Certificate: ISO,CQC ROHS
  • Making sample time: all type in stock
  • Advantage: high quality with high measuring accuracy, fast thermal response, high mechanical strength, long service lifetime, wide temp measuring range of -200-1300centigrade

Classification for thermocouple TYPE K WIRE

  • Thermocouple level (high temperature level). This type of thermocouple wire is mainly suitable for thermocouple type K, J, E, T, N and L and other high temperature detection instrument, temperature sensor, etc.
  • Compensating wire level (low temperature level). This type of thermocouple wire is mainly suitable for compensating cable and extension wire of various thermocouples of type S, R, B, K, E, J, T, N and L, heating cable, control cable and so on.

Thermocouple variety and index for thermocouple TYPE K WIRE


Thermocouple Variety and Index
Variety Type Measurement Range(°C)
NiCr-NiSi K –200–1300
NiCr-CuNi E –200–900
Fe-CuNi J –40–750
Cu-CuNi T –200–350
NiCrSi-NiSi N –200–1300
NiCr-AuFe0.07 NiCr-AuFe0.07 –270–0


Thermocouple type and grade for thermocouple TYPE K ROD


Thermocouple Type Grade Temperature Range(°C) Allowable Deviation
type K and type N I –40–1100 ±1.5°C or±0.4%t
II –40–1300 ±2.5°C or ±0.75%t
III –200–40 ±2.5°C or ±1.5%t
type E I –40–1100 ±1.5°C or ±0.4%t
II –40–1300 ±2.5°C or ±0.75%t
III –200–40 ±2.5°C or±1.5%t
type J I –40–750 ±1.5°C or ±0.4%t
II –40–750 ±2.5°C or ±0.75%t
type T I –40–350 ±0.5°C or± 0.4%t
II –40–350 ±1.0°C or± 0.75%t
III –200–40 ±1.0°C or± 1.5%t
NiCr-AuFe0.07 I –270–0 ±0.5°C
II ±1.0°C



Specification of alloy wires for thermocouple TYPE K WIRE


Anode Cathode Diameter(mm) Maximum Temperature(°C)
name code name code long-time using short-time using
NiCr10(Chromel) KP NiSi3(Alumel) KN Φ0.3 700 800
Φ0.5 800 900
Φ0.8 Φ1.0 900 1000
Φ1.2 Φ1.6 1000 1100
Φ2.0 Φ2.5 1100 1200
NiCr14.2Si NP NiSi4 NN Φ3.2 1200 1300
NiCr10(Chromel) EP CuNi45(Copel) EN Φ0.3 Φ0.5 350 450
Φ0.8 Φ1.0 Φ1.2 450 550
Φ1.6 Φ2.0 550 650
Φ2.5 650 750
Φ3.2 750 900
Fe(Iron) JP CuNi45(Copel) JN Φ0.3 Φ0.5 300 400
Φ0.8 Φ1.0 Φ1.2 400 500
Φ1.6 Φ2.0 500 600
Φ2.5 Φ3.2 600 750
Cu(Copper) TP CuNi45(Copel) TN Φ0.2 Φ0.3 150 200
Φ0.5 Φ0.8 200 250
Φ1.0 Φ1.2 250 300
Φ1.6 Φ2.0 300 350







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: Jully

Tel: +8617301602658

Send your inquiry directly to us