|
化学成分
|
C
|
Mn
|
Si
|
S
|
P
|
Cu
|
Ni
|
Mo
|
Cr
|
|
保证值
|
≤0.08
|
0.5~2.5
|
≤0.90
|
≤0.030
|
≤0.040
|
≤0.75
|
9.0~11.0
|
≤0.75
|
18.0~21.0
|
|
抗拉强度Rm(MP)
|
伸长率A(%)
|
|
|
标准
|
≥550
|
≥35
|






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