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Huona (Shanghai) New Material Co., Ltd.  

Thermostatic Bimetal Strip, Welding Wire, Soft Magnetic Alloys, Resistance Alloy, Magnesium Alloy Plate, Amorphous & Nanocrystalline, Controlled Expansion Alloys, Permalloy, Invar, Heating Alloy

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MadeInChina.com > Huona (Shanghai) New Material Co., Ltd. > Product > Bl2 Thermotatic Bimetal Strip for Thermal Control Switch
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Bl2 Thermotatic Bimetal Strip for Thermal Control Switch

价格 $28.20对比
发货 Shanghai
销量 暂无
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数量
+-
库存2000kg   起订20kg
IP UnknownLearn More
BL2
Ni20mn6
Ni36
8.1
-70~ 350
-20~ 180
0.8
12
Yes
HUONA
Wooden Case
1*100mm
China
7505220000
Product Description

BL2 thermal bimetal strip

A 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.

Bimetallic Strip 5J1580

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

 

GradeBL2
High expansion layerNi20Mn6
Low expansion layerNi36
 
 
Description:
Chemical composition(%)
 
GradeCSiMnPSNiCrCuFe
Ni36≤0.05≤0.3≤0.6≤0.02≤0.0235~37--Bal.
 
GradeCSiMnPSNiCrCuFe
Ni20Mn6≤0.050.15~0.35.5~6.5≤0.02≤0.0219~21--Bal.

 
 
Physical properties
>Density (g/cm3): 8.1
> Allowable temperature (ºC): -70~ 350
 Linear temperature (ºC): -20~ 180
>Electrical resistivity (μΩ*m): 0.8 ±5% (20ºC)
>Thermal conductivity ( W/m. ºC): 12
>Bending K / 10-6 ºC-1(20~135ºC): 15
> Elastic Modulus, E/GPa 147~177
 
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.