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Material
GB /T 6478-2015
Steels For Cold Heading And Cold Extruding
Material Designation
Chemical Composition (%)
MFT8
(
L27208
)
Min
Max
MFT9
(
L27228
)
Min
Max
MFT10
(
L27128
)
Min
Max
ML04Al
(
U40048
)
Min
Max
ML06Al
(
U40068
)
Min
Max
ML08Al
(
U40088
)
Min
Max
ML10Al
(
U40108
)
Min
Max
ML10
(
U40102
)
Min
Max
ML12Al
(
U40128
)
Min
Max
ML12
(
U40122
)
Min
Max
ML15Al
(
U40158
)
Min
Max
ML15
(
U40152
)
Min
Max
ML20Al
(
U40208
)
Min
Max
ML20
(
U40202
)
Min
Max
ML18Mn
(
U41188
)
Min
Max
ML20Mn
(
U41208
) (
ML22Mn
)
Min
Max
ML15Cr
(
A20154
)
Min
Max
ML20Cr
(
A20204
)
Min
Max
ML25
(
U40252
)
Min
Max
ML30
(
U40302
) (
ML30Mn
)
Min
Max
ML35
(
U40352
)
Min
Max
ML40
(
U40402
)
Min
Max
ML45
(
U40452
)
Min
Max
ML15Mn
(
L20151
)
Min
Max
ML25Mn
(
U41252
)
Min
Max
ML30Cr
(
A20304
)
Min
Max
ML35Cr
(
A20354
) (
ML37Cr
)
Min
Max
ML40Cr
(
U20404
)
Min
Max
ML45Cr
(
A20454
)
Min
Max
ML20CrMo
(
A30204
)
Min
Max
ML25CrMo
(
A30254
)
Min
Max
ML30CrMo
(
A30304
)
Min
Max
ML35CrMo
(
A30354
)
Min
Max
ML40CrMo
(
A30404
) (
ML42CrMo
)
Min
Max
ML45CrMo
(
A30454
)
Min
Max
ML20B
(
A70204
)
Min
Max
ML25B
(
A70254
)
Min
Max
ML30B
(
A70304
) (
ML28B
)
Min
Max
ML35B
(
A70354
)
Min
Max
ML15MnB
(
A71154
)
Min
Max
ML20MnB
(
A71204
)
Min
Max
ML25MnB
(
A71254
)
Min
Max
ML30MnB
(
A71304
)
Min
Max
ML35MnB
(
A71354
)
Min
Max
ML40MnB
(
A71404
)
Min
Max
ML37CrB
(
A20374
)
Min
Max
ML20MnVB
(
A73204
)
Min
Max
ML20MnTiB
(
A74204
)
Min
Max
ML15MnVB
(
A73154
)
Min
Max
For Reference Only
