



化学成分;
C | Si | Mn | P | S | Cr | Ni | Mo | Nb | V | Ti | B |
0.18 | 0.5 | 1.8 | 0.02 | 0.01 | 0.08 | 1.2 | 0.6 | 0.07 | 0.08 | 0.03 | 0.003 |




















