牌号 | 化学成分(%) | ||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | V | |
SWRH77A | 0.75~0.80 | 0.10~0.30 | 0.30~0.60 | ≤0.025 | ≤0.025 | ≤0.10 | ≤0.10 | ≤0.20 | - |