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PRODUCTS    NICKEL & NICKEL ALLOYS    High sensitivity,High resistance,Suitable for medium temperature 5J20110 TB208/110 thermostat bimetal strip

High sensitivity,High resistance,Suitable for medium temperature 5J20110 TB208/110 thermostat bimetal strip

5J20110有很高的热敏感性能和电阻率,可提高仪器灵敏度,缩小尺寸或增大作用力。但弹性模量和允许应力较低,耐腐蚀性能较差。常用作陀螺仪和其他电真空器件中的无磁非匹配瓷封材料
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  • 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.

    Chemical composition(%)

    Grade C Si Mn P S Ni Cr Cu Fe
    Ni36 ≤0.05 ≤0.3 ≤0.6 ≤0.02 ≤0.02 35~37 - - Bal.
    Grade C Si Mn P S Ni Cr Cu Fe
    Mn75Ni15Cu10 ≤0.05 ≤0.5 Bal. ≤0.02 ≤0.02 14~16 - 9~11 ≤0.8

    Composition

    Grade 5J20110
    High expansion layer Mn75Ni15Cu10
    Low expansion layer Ni36

    Typical Physical properties

    Density (g/cm3) 7.7
    Electrical resistivity at 20ºC(OMmm2/m) 1.13 ±5%
    Thermal conductivity, λ/ W/(m*ºC) 6
    Elastic Modulus, E/ Gpa 113~142
    Bending K / 10-6 ºC-1(20~135ºC) 20.8
    Temperature bending rate F/(20~130ºC)10-6ºC-1 39.0%±5%
    Allowable temperature (ºC) -70~ 200
    Linear temperature (ºC) -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 Name Type Dimension  
    5J20110 Strip W= 5~120mm T= 0.1mm
Copper Contact
Nickel Contact
Titanium Contact
Nickel products
Copper products
Titanium products
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