Home
>
Material
GB /T 1222-2007
Spring Steels
Material Designation
Chemical Composition (%)
65
(
U20652
)
Min
Max
85
(
U20852
)
Min
Max
65Mn
(
U21653
)
Min
Max
60Si2Mn
(
A11602
)
Min
Max
60Si2MnA
(
A11603
)
Min
Max
60Si2CrA
(
A21603
)
Min
Max
60Si2CrVA
(
A28603
)
Min
Max
55SiCrA
(
A21553
)
Min
Max
55CrMnA
(
A22553
)
Min
Max
60CrMnA
(
A22603
)
Min
Max
50CrVA
(
A23503
)
Min
Max
60CrMnBA
(
A22613
)
Min
Max
30W4Cr2VA
(
A27303
)
Min
Max
55SiMnVB
(
A77552
)
Min
Max
28MnSiB
(
A76282
)
Min
Max
For Reference Only
