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4j52/Pernifer 50 Glass Sealing 52 Alloy Tube

Short Description:

NIFE 52 / FENI52 / Nilo 52 / UNS / UNS N14052 Fe-Ni sealing alloy Tube

Alloy 52 Contains 52% nickel and 48% iron and is widely used in the telecommunications industry.It also finds a application in a wide variety of electronic applications,especially for glass seals.

Alloy 52 is one of the glass to metal sealing alloys designed for use with a variety of soft glasses. Known for a coefficient of thermal expansion that is almost constant up to 1050F (565 C).

  • Certificate: ISO 9001
  • Size: Customized
  • desity: 8.3
  • Melting Point: 1450c /2600f
  • Thermal Conductivity: 17 W/M Tmper
  • Mean Coeff Thermal Expansion: 5.4
  • Electrical Resistivity: 258
  • Inflection Point: 500c
  • Annealed: 500
  • transport package: carton box
  • Forging: 2150
  • Product Detail


    Product Tags

    Size Range:
    *Sheet          —Thickness 0.1mm~40.0mm, width:≤300mm,Condition: cold rolled(hot), bright, bright annealed

    *Round Wire—Dia 0.1mm~Dia 5.0mm,Condition: cold drawn, bright, bright annealed

    *Flat Wire     —Dia 0.5mm~Dia 5.0mm,length:≤1000mm,Condition:flat rolled, bright annealed

    *Bar              —Dia 5.0mm~Dia 8.0mm,length:≤2000mm,Condition:cold drawn,bright, bright annealed
    Dia 8.0mm~Dia 32.0mm,length:≤2500mm,Condition:hot rolled,bright, bright annealed
    Dia 32.0mm~Dia 180.0mm,length:≤1300mm,Condition:hot forging,peeled, turned, hot treated

    *Capillary     —OD 8.0mm~1.0mm,ID 0.1mm~8.0mm,length:≤2500mm,Condition: cold drawn, bright, bright annealed.
    *Pipe             —OD 120mm~8.0mm,ID 8.0mm~129mm,length:≤4000mm,Condition: cold drawn, bright, bright annealed.


    Cr Al C Fe Mn Si P S Ni Mg
    Min 50.5
    Max 0.25 0.10 0.05 Bal. 0.60 0.30 0.025 0.025 0.5

    Average Linear Expansion Coefficient:

    Grade α1/10-6ºC-1
    20~100ºC 20~200ºC 20~300ºC 20~350ºC 20~400ºC 20~450ºC 20~500ºC 20~600ºC
    4J52 10.3 10.4 10.2 10.3 10.3 10.3 10.3 10.8


    Condition Approx. tensile strength Approx. operating temperature
    N/mm² ksi °C °F
    Annealed 450 – 550 65 – 80 up to +450 up to +840
    Hard Drawn 700 – 900 102 – 131 up to +450 up to +840


    The alloy has good ductility and can be formed by standard means.
    Welding by conventional methods is appropriate for this alloy.
    Heat Treatment:
    Alloy 52 should be annealed at 1500F followed by air cooling. Intermediate strain relieving can be performed at 1000F.
    Forging should be done at a temperature of 2150 F.
    Cold Working:
    The alloy is readily cold worked. Deep drawing grade should be specified for that forming operation and annealed grade for general forming.

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