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Precision Alloy Iron Nickel wire for Sealing Glass

Short Description:

Basic physical constants and mechanical properties of the alloy:
Density: γ = 8,1 g / cm3;
Electric resistivity: ρ = 0,78 ohm mm2 ? / m;
The temperature of the Curie point: Θs = 230 ° C;
Modulus of elasticity E = 144 kN / mm2;
Linear expansion coefficient a1 (20-100 ºC) ≤1,5 * 10-6 ºC -1


  • Certificate: ISO 9001
  • Size: Customized
  • Application: sealing class
  • Type : wire
  • surface : bright
  • surface treatment: polishing
  • color : nature
  • dimensions: as requirement
  • MOQ: 20kg
  • serves : small order accepted
  • condition : soft
  • diameter: 0.01mm-12mm
  • Product Detail

    FAQ

    Product Tags

    Precision Alloy Iron Nickel wire  for Sealing Glass
    Classification : low coefficient of thermal expansion alloy
    Application: Invar is used where high dimensional stability is required, such as precision instruments, clocks, seismic creep gauges, television shadow-mask frames, valves in motors, and antimagnetic watches. In land surveying, when first-order (high-precision) elevation leveling is to be performed, the leveling rods used are made of Invar, instead of wood, fiberglass, or other metals. Invar struts were used in some pistons to limit their thermal expansion inside their cylinders.
    Chemical Composition in %, Invar

    Ni
    35-37%
    Fe
    .
    C
    0.05%
    Si
    0.3%
    Mn
    0,3-0,6 %
    S
    o 0.015%
    P
    0.015%
    Mo
    0.1%
    V
    0.1%
    Al
    0.1%
    Cu
    0.1%
    Cr
    0,15 %

    Temperature Range/ºC 1/10-6ºC-1 Temperature Range/ºC 1/10-6ºC-1
    20~-60 1.8 20~250 3.6
    20~-40 1.8 20~300 5.2
    20~-20 1.6 20~350 6.5
    20~0 1.6 20~400 7.8
    20~50 1.1 20~450 8.9
    20~100 1.4 20~500 9.7
    20~150 1.9 20~550 10.4
    20~200 2.5 20~600 11







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