13181069580 13589468387
| 牌 号 | 状 态 | 拉伸试验 | 硬度试验 | ||
| 抗拉强度Rm / MPa 不小于 |
伸长率A / % 不小于 |
维氏硬度a / HV | 布氏硬度b / HB | ||
| H68 | M | 280 | 43 | 55~85 | 50~80 |
| M2 | 350 | 40 | 85~120 | 80~115 | |
| Y2 | 370 | 25 | 95~125 | 90~120 | |
| Y | 420 | — | ≥115 | ≥110 | |
| H65 | M | 290 | 43 | 55~85 | 50~80 |
| M2 | 360 | 25 | 80~115 | 75~110 | |
| Y2 | 370 | 18 | 90~120 | 85~115 | |
| Y | 430 | — | ≥110 | ≥105 | |
| H63、 H62 |
M | 300 | 43 | 60~90 | 55~85 |
| M2 | 360 | 25 | 75~110 | 70~105 | |
| Y2 | 370 | 18 | 85~120 | 80~115 | |
| Y | 440 | — | ≥115 | ≥110 | |
