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    FangJun:  
    Bearing collar and roller material
    Bearing collar and roller material
    Nov 25, 2008 10:37:27 AM
    The best material for rolling bearing is high carbon chromium bearing steel, which features desired hardness, strong rolling fatigue resistance, wearing resistance and stable dimension. Its chemical composition is:

    Chemical composition of bearing steel GCr1

    Element(wt%)
    C
    0.95-1.05
    Cr
    1.40-1.65
    Si
    0.15-0.35
    Mn
    0.25-0.45
    P
    =0.027
    S
    =0.02
    Element(wt%)
    Ni
    <0.23
    Cu
    =0.25
    Mo
    =0.1
    Sn
    <0.03
    As
    <0.04
    Ti
    <0.005
    Element(wt%)
    Sb
    <0.002
    Pb
    <0.002
    O<0.001
    Al
    <0.05
    Ca
    <0.01
    -

    Corresponding designation equivalent GCr15

    CHINA
    ISO
    USA
    GERMANY
    JAPAN
    SWEDEN
    GCr15
    683/XVⅡ
    52100
    (ASTM)
    100Cr6
    (DIN)
    SUJ2
    (JIS)
    SKF3

    Staintess steel

    Steel No.
    Chemical composition%
    C
    Si
    Mn
    P
    S
    Cr
    Mo
    AISI-440C
    0.95-1.2
    <1.0
    <1.0
    <0.04
    <0.03
    16-18
    <0.75

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