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 layer||Mn75Ni15Cu10|
|Low expansion layer||Ni36|
Typical Physical properties
|Electrical resistivity at 20℃(Ωmm2/m)||1.13 ±5%|
|Thermal conductivity, λ/ W/(m*℃)||6|
|Elastic Modulus, E/ Gpa||113~142|
|Bending K / 10-6 ℃-1(20~135℃)||20.8|
|Temperature bending rate F/(20~130℃)10-6℃-1||39.0%±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
Feature: The basic characteristics of Thermostat Bimetallic is bending
deformation with temperature changes, resulting in a certain
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
|OhmAlloy-5J20110||Strip||W= 5~120mm||T= 0.1mmw|
shipping and package
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you
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
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
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
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
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.