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牌号
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化学成分（质量分数）（%）
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||||||||
|
|
C
|
Mn
|
Si
|
Cr
|
Mo
|
Ni
|
Nb+Ta
|
S
|
P
|
|
15CrMo
|
0.12~0.18
|
0.40~0.70
|
0.17~0.37
|
0.80~1.10
|
0.40~0.55
|
≤0.30
|
_
|
≤0.035
|
≤0.035
|