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PRODUCTS:Ceramvar Alloy
GRADE:4J33、4J34
PRODUCTION STANDARD:YB/T5231-2005
Views:960
  • PRODUCTS DETAILS
  • SPECIFICATION

    Introduction


    4J33/4J34 alloy is a kind of iron-nickel alloy, also known as expansion alloy, it is one kind of material with special expansion performance and other properties. According to its main chemical we can separate into "Fe-NiFe-Ni-COFe-Cr and Fe-Ni-Cr".  According to its chemical and the different coefficients of expansion, The products are widely used in electric vacuum industry included ranges of glass, ceramics, mica and other's material matching sealing. It is indispensable for manufacture high power transmitting tubes, switch tubes, magnetrons, kinescope, integrated electric road, tube, a sealing plug, sealed relay and indispensable transistors sealing structure materials for UHF satellite and television broadcasting.




    4J334J34YB/T5234-1993

    *Ceramvar alloy, ASTM F1466, (Fe-Ni27-Co25), Chinese 4J33/4J34

    Cross Reference:

    Grade

    Russia

    U.S.A.

    Japan

    Germany

    4J33

    33HkNi33Co17

    -

    KV-4Ni33Co17

    -

    4J34

    31HKNi31Co20

    24HKNi25Co18

    CeramvarNi27Co25

    -

    Vacon20Ni28Co20

     

    Grade & Chemical Composition  (See Table 1)

    Table 1 Grade & Chemical Composition

    Grade

    Chemical Composition (%)

    C

    P

    S

    Mn

    Si

    Ni

    Co

    Fe

    4J33

    0.05

    0.020

    0.020

    0.50

    0.30

    32.133.6

    14.015.2

    Bal

    4J34

    0.05

    0.020

    0.020

    0.50

    0.30

    28.529.5

    19.520.5

    Bal

    NOTES:  1Under condition that the average coefficient of the linear expansion meets the requirements of the standard, the content of nickel and cobalt are allowed to deviate from the stated range.

    2.   The shape and dimensions of the alloys are in compliance with GB/T14985.

    Mechanical Properties (See Table 2—Table4)

    Table 2 Tensile Strength (for wires)

    Symbol

    State

    Tensile Strength

     /MPa

    R

    Annealed

    <585

    L

    Unannealed

    >860

    Table 3 Tensile Strength (for Strips)

    Symbol

    State

    Tensile Strength

    /MPa

    R

    Annealed

    <570

    L

    Unannealed

    >700

    Table 4 Hardness of Deep Stamping Strips

    State

    Thickness /MM

    Hardness /HV

    Deep-Stamping

    >2.5

    ≤170

    ≤2.5

    ≤165

    Physical Property (see Table 5 & Table 6)

    Table5 Linear Expansion Cofficient

    Grade

    Heat treatment of the samples

    Mean Coefficient of Linear Expansion  ā/(10-6/K)

    20300

    20400

    20500

    20600

    4J33

    Heat to 900±20in the protective atmosphere or in vacuum condition, hold for 1 hour, cooled to200 at a rate less than 5/h, and take out from the furnace.

     

    6.06.8

    6.67.4

     

    4J34

     

    6.37.1

     

    7.88.5

    Table 6 Typical Coefficient of Linear Expansion

    Grade

    Mean Coefficient of Linear Expansion at Different Temperature ā/(10-6/K)

    20200

    20.300

    20400

    20500

    20600

    4J33

    7.1

    6.5

    6.3

    7.1

    8.5

    4J34

    7.5

    6.9

    6.6

    6.9

    8.3

    NOTE: The values in the tables are for reference only.      


     



    Specification:
    Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

    Size Range:
    *Sheet---thickness 0.05mm~3.5mm, width:≤350mm,Condition: cold rolled, bright, bright annealed
    *Plate---thickness 3.5mm~40.0mm,width:≤300mm,Condition: cold rolled, hot rolled, 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:≤3000mm,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

    Note: we could do any other products with specified technical standard, say, ASTM,SAE,DIN,S.E.W.,JIS,ISO,IEC,NF,BS,ΓОСТ.PLS contact us for more information: Tel: +86-29-89396652 or e-mail us at: Sales@xaleipeng.com


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