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Material
GB /T 1222-2016
Spring steels
Material Designation
Chemical Composition (%)
70
(
U20702
)
Min
Max
55SiCrV
(
A28553
)
Min
Max
30W4Cr2V
(
A27303
)
Min
Max
52CrMnMoV
(
A36523
)
Min
Max
56Si2MnCr
(
A24563
)
Min
Max
52SiCrMnNi
(
A45523
)
Min
Max
60Si2CrV
(
A28603
)
Min
Max
60Si2MnCrV
(
A28600
)
Min
Max
50CrV
(
A23503
)
Min
Max
51CrMnV
(
A25513
)
Min
Max
65
(
U20652
)
Min
Max
65Mn
(
U21653
)
Min
Max
80
(
U20802
)
Min
Max
85
(
U20852
)
Min
Max
70Mn
(
U21702
)
Min
Max
28SiMnB
(
A76282
)
Min
Max
40SiMnVBE
(
A77406
)
Min
Max
55SiMnVB
(
A77552
)
Min
Max
38Si2
(
A11383
)
Min
Max
60Si2Mn
(
A11603
)
Min
Max
55CrMn
(
A22553
)
Min
Max
60CrMn
(
A22603
)
Min
Max
60CrMnB
(
A22609
)
Min
Max
60CrMnMo
(
A34603
)
Min
Max
55SiCr
(
A21553
)
Min
Max
60Si2Cr
(
A21603
)
Min
Max
For Reference Only
