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ASTM TM2 Bimetal Ribbon Used for Control System

Short Description:

5j1480 Thermal bimetal strip Ni22Cr3/Ni36 TB140/80 ASTM TM1

Thermal bimetal strip is by the different expansion coefficient of two or more than two layers of metal or metal solid combination, and along the entire interface varies with temperature and the thermal function of shape changes in composite materials.One of high expansion coefficient become active layer, low expansion coefficient becomes passive.When requirements with high resistivity, but heat sensitive resistance performance is essentially the same type of thermal bimetal series, can be added between the two layers of different thickness of middle layer as a shunt layer, is to achieve the purpose of control different resistivity.

  • Certificate: ISO 9001
  • Size: Customized
  • Standard: ASTM, GB, DIN
  • Surface Treatment: Galvanized
  • Technique: Cold Rolled
  • Features: Linear Temperature Can Reach 350 ºC
  • Allows The Use of Temperature Range: -70~370ºC
  • Elastic Modulus Is Not Less Than: 1.97
  • Linear Temperature Range: -20~150
  • Resistivity: 0.16
  • Density: 8.58
  • Temperature Curvature: 8.28
  • The Highest Temperature: 370
  • transport package: wooden case
  • Product Detail


    Product Tags

    The basic characteristic of the thermal bimetal is changing with temperature and temperature deformation, resulting in a certain moment.Many devices use this feature to convert heat energy into mechanical work to achieve automatic control.Thermal bimetal used for control system and temperature sensor in the measuring instrument.

    shop sign 5j1480
    With brand 5j18
    Composite layer
    High expansion layer Ni22Cr3
    middle layer ——–
    Low expansion layer Ni36

    Chemical composition

    shop sign Ni Cr Fe Co Cu Zn Mn Si C S P
    Ni36 35.0~37.0 - allowance - - - ≤0.6 ≤0.3 0.05 0.02 0.02
    Ni22Cr3  21.0~23.0 2.0~4.0 allowance - - - 0.3~0.6 0.15~0.3 0.25~0.35 0.02 0.02


    Than bending K(20~135ºC) Temperature curvature
    F/(greenhouse ~ 130 ºC)
     resistivity Linear temperature
    / ºC
    Allows the use of temperature / ºC Density (g/cm after)
    Nominal value Allowable deviation Standard values Allowable deviation
    Level 1 Level  2
    14.3 ±5% ±7% 26.2%±5% 0.8 ±5% -20~180 -70~350 8.2


    Modulus of elasticity
    Hardness (HV) Tensile strength
    Allow stress MPa
    High expansion layer Low expansion layer  minimum biggest
    147~177 270~340 200~255 785~883 196 343

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