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Material
JB /T 6908-2020
Steel forings for displacement compressors
Material Designation
Chemical Composition (%)
20
(
U20202
)
Min
Max
35
(
U20352
)
Min
Max
45
(
U20452
)
Min
Max
16Mn
Min
Max
20Cr
(
A20202
)
Min
Max
40Cr
(
A20402
)
Min
Max
35CrMo
(
A30352
)
Min
Max
42CrMo
(
A30422
)
Min
Max
35CrMoV
(
A31352
)
Min
Max
38CrMoAI
(
A33382
)
Min
Max
30CrMnSi
(
A24302
)
Min
Max
40CrNiMo
(
A50402
)
Min
Max
06Cr19Ni10
(
S30408
)
Min
Max
06Cr18Ni11Ti
(
S32168
)
Min
Max
12Cr13
(
S41010
)
Min
Max
20Cr13
(
S42020
)
Min
Max
30Cr13
(
S42030
)
Min
Max
05Cr17Ni4Cu4Nb
(
S51740
)
Min
Max
For Reference Only
