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Temperature Control 5J20110 Bimetallic Strip For Heat - Sensitive Components

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Ohmalloy Material Co.,Ltd
City: Shanghai
Province/State: Shanghai
Country/Region: China
Tel: 86-21-66796338
Contact Person:
Mr Qiu

Temperature Control 5J20110 Bimetallic Strip For Heat - Sensitive Components

Model Number : 5J20110
Certification : ISO,SGS
Place of Origin : China(Shanghai)
MOQ : 20kg
Price : negotiable
Delivery Time : 5-8 workdays after your received deposit
Brand Name : OHMALLOY
Packaging Details : in coil
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OhmAlloy-5J20110 (Bimetallic strip)
(Common Name: Truflex P675R, Telcon200, Kanthal 1200)

Bimetallic strip is used to convert a temperature change into mechanical displacement. The strip consists of two strips of different metals which expand at different rates as they are heated, usually steel and copper, or in some cases steel and brass. The strips are joined together throughout their length by riveting, brazing or welding. The different expansions force the flat strip to bend one way if heated, and in the opposite direction if cooled below its initial temperature. The metal with the higher coefficient of thermal expansion is on the outer side of the curve when the strip is heated and on the inner side when cooled

The sideways displacement of the strip is much larger than the small lengthways expansion in either of the two metals. This effect is used in a range of mechanical and electrical devices. In some applications the bimetal strip is used in the flat form. In others, it is wrapped into a coil for compactness. The greater length of the coiled version gives improved sensitivity.

Diagram of a bimetallic strip showing how the difference in thermal expansion in the two metals leads to a much larger sideways displacement of the strip


High expansion layerMn75Ni15Cu10
Low expansion layerNi36

Chemical composition(%)



Typical Physical properties

Density (g/cm3)7.7
Electrical resistivity at 20℃(Ωmm2/m)1.13 ±5%
Thermal conductivity, λ/ W/(m*℃)6
Elastic Modulus, E/ Gpa113~142
Bending K / 10-6-1(20~135℃)20.8
Temperature bending rate F/(20~130℃)10-6-139.0%±5%
Allowable temperature (℃)-70~ 200
Linear temperature (℃)-20~ 150

Application: The material is mainly in automatic control devices and instrumentation (eg: exhaust thermometers, thermostats, voltage regulators, temperature relay, automatic protection switching, diaphragm meters, etc.) make temperature control, temperature compensation, current limit, temperature indicator and other heat-sensitive components.

Feature: The basic characteristics of Thermostat Bimetallic is bending deformation with temperature changes, resulting in a certain moment.
Thermostat Bimetallic Strip expansion coefficient is different from the two or more layers of metal or alloy along the entire contact surface firmly bonded, having a temperature-dependent shape change occurs thermosensitive functional composites. Wherein the higher expansion coefficient of the active layer is a layer called a low coefficient of expansion of the layer is named passive layer.

Style of supply

Alloys NameTypeDimension
OhmAlloy-5J20110StripW= 5~120mmT= 0.1mmw

Testing room

shipping and package

our factory


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 Western union account, wire transfer for sample amount also ok.

3. Customer do not have express account. How will we 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.How do you guarantee the quality?

We have QC who are responsible for tracking and monitoring whole production process, and we are willing to accept customer‘s testing.

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

Product Tags:

bi metal strip


bimetal material

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