化学成分(%) | 力学性能 | |||||||||
项目 | C | Mn | Si | Cr | S | P | Rm (MPa) | Rel/MPa | A (%) | 冲击功(J) (−40℃) |
规范 | ≤0.10 | 1.6~2.0 | 0.40~0.60 | ≤0.30 | ≤0.020 | ≤0.025 | ≥550 | ≥470 | ≥20 | ≥27 |
材料 | 0.076 | 1.70 | 0.60 | 0.020 | 0.0041 | 0.0084 | 658 | 600 | 26 | 69 |