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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