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Elastic Alloys HOME >> Elastic Alloys
PRODUCTS:Ni-Span C902 Alloy
GRADE:3J53、3J1、3J58
PRODUCTION STANDARD:YB/T5256-1993、YB/T5254-1993
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  • SPECIFICATION

    Introduction:



    A nickel-iron-chromium alloy made precipitation hardenable by additions of aluminum and titanium. The titanium content also helps provide a controllable thermoelastic coefficient, which is the alloy's outstanding characteristic. The alloy can be processed to have a constant modulus of elasticity at temperatures from -50°F to 150°F (-45 to 65°C). Used for precision springs, mechanical resonators, and other precision elastic components. Standard product forms are round, strip, tube, pipe, and wire.





    Elastic Component Alloys (3J1 and 3J53) YB/T5256-1993

    *Ni-Span Alloy C-902, AMS 5225, UNS N09902, (Ni42CrTiAl)Chinese 3J53

    Grade

    Relative Grade

    Russia

    U.S.A.

    Japan

    Germany

    U.K.

    3J1

    36НХТЮ

    ЭП702

     

     

     

     

    3J53

    42НХТЮ

    Н41ХТ

    Ni-Span C902

    Elinvar Extra

    Sumispan-3

    EL-3

    Ni-Span C

    Ni-Span C

    Grade and Chemical Composition (see Table 1)

    Table 1 Grade and Chemical Composition

    Grade

    Chemical Composition (%)

    C

    Mn

    Si

    P

    S

    Ni

    Cr

    Ti

    A1

    Fe

    3J1

    0.05

    1.00

    0.80

    0.020

    0.020

    34.536.5

    11.513.0

    2.703.20

    1.001.80

    Bal

    3J53

    0.05

    0.80

    0.80

    0.020

    0.020

    41.543.0

    5.205.80

    2.302.70

    0.500.80

    Bal

    NOTE: The size and shape must comply with the standard of GB/T15001for “elastic alloys”.

    Mechanical Property (see Table 2—Table4)

    Table 2 Mechanical Property (for the delivery statue)

    Grade

    Shape

    Delivery State

    Thickness&Diameter

    /mm

    Tensile Strength

    ób/Mpa

    Elongationδ(%)≥

    3J1

    Strip

    Annealed

    0.200.50

    <980

    20

    Wire

    Cold Drawn

    0.203.00

    >980

    3J53

    Strip

    Annealed

    0.200.50

    <885

    20

    Wire

    Cold Drawn

    0.203.00

    >930

    Table 3  Mechanical Property(after heat treatment)

    Grade

    Shape

    Delivery State

    Thickness&Diameter

    /mm

    Tensile Strength

      ób/Mpa

    Elongation δ(%)

    3J1

    Strip

    Cold Rolled

    0.202.50

    1375

    5

    Annealed

    0.201.00

    1175

    8

    Wire

    Cold Drawn

    0.505.00

    1470

    5

    Bar

    Cold Drawn

    3.018.0

    1375

    5

    Pipe& flatspring

    Hot Rolled & Hot Forged

    6.025.0

    1175

    1O

    3J53

    Strip

    Cold Rolled

    0.202.50

    1225

    5

    Annealed

    0.201.00

    1080

    8

    Wire

    Cold Drawn

    0.505.00

    1375

    5

    Bar

    Cold Drawn

    3.018.0

    1325

    5

    Pipe& Flatspring

    Hot Rolled & Hot Forged

    6.025.0

    1080

    10

    Table 4 Yield Strength (after heat treatment)

    Grade

    Delivery State

    Thickness

    /mm

    Yield Strength

    /MPa

    3J1

    Cold Rolled

    0.502.50

    980

    Annealed

    0.501.00

    735

    3J53

    Cold Rolled

    0.502.50

    885

    Annealed

    0.501.00

    685

    Physical Property (see Table5&Table6)

    Table 5 physical property mechanical property (after aging)

    Item

    3J1

    3J53

    Modulus of elasticity (E/MPa)

    186500206000

    176500191000

    Shear elasticity (G/MPa)

    6850078500

    6350073500

    Desinty (g/cm3)

    8.0

    8.0

    Mean coefficient of linear expansion20-100°C/(10-6/K)

    8.5

    Saturation induction density (B600/T)

    0.7

    Resistivity ρ /(μΩ·m)

    1.02

    1.1

    Magnetic Rate k/106

    150250

    Vickers hardness (HV)

    400480

    350-450

    Note: The K value is the value of the centimeter gram second system.

    Table 6 the temperature coefficient of the Modulus of elasticity

    Aging Temperature/

    the temperature coefficient of the Modulus of elasticity

    βE/(10-6/)(-6080)

    Cold Rolling

    Annealed

    500

    -38-15

    +18+12

    550

    -220

    +10+35

    600

    -10+10

    +35+55

    650

    0+20

    +42+64

    700

    0+20

    +40+60

    750

    -4+16

    +28+50








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