合金牌号 |
化学成分(质量分数)(%) |
||||||||||||
C |
S |
P |
Mn |
Si |
Ni |
Cr |
Co |
V |
Mo |
W |
T |
Fe |
|
≤ |
|||||||||||||
2J4① |
≤0.12 |
O.020 |
O.025 |
≤O.70 |
≤O.70 |
5.3~ 6.7 |
|
44.0~ 46.O |
3.5~ 4.5 |
|
|
|
余量 |
2J7② |
≤O.12 |
0.020 |
O.025 |
≤O.70 |
≤0.70 |
≤O.7 |
|
51.O~ 53.0 |
6.5~ 7.5 |
|
|
|
余量 |
2J9③ |
≤0.12 |
0.020 |
O.025 |
≤0.70 |
≤O.70 |
≤O.7 |
|
51.O~ 53.0 |
8.5~ 9.5 |
|
|
|
余量 |
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