钢种名称 | 调质钢 | ||||||
钢号 | 30CrNi3 | 35CrMnSi | 37CrNiB | 40Cr | 45Cr | ||
30CrMnNi2MoV | 30CrMnSi | 35CrMo | 50B | 45Mn2 | |||
退火温度 | 820 | 860 | 820 | 840 | 840 | ||
淬火温度 | 860 | 880 | 860 | 850 | 850 | ||
马氏体点 | 300 | 360 | 270 | 320 | 310 | ||
回火温度℃ | 150 | 回火后硬度H R C | 51 | 54 | 51 | 54 | 56 |
200 | 50 | 53 | 50 | 51 | 54 | ||
250 | 48 | 51 | 48 | 48 | 53 | ||
300 | 46 | 48 | 46 | 47 | 51 | ||
350 | 44 | 46 | 43 | 46 | 49 | ||
400 | 42 | 44 | 41 | 43 | 48 | ||
450 | 39 | 41 | 39 | 42 | 46 | ||
500 | 35 | 38 | 37 | 38 | 44 | ||
550 | 32 | 35 | 34 | 34 | 40 | ||
600 | 27 | 28 | 29 | 31 | 35 | ||
650 | 25 | 27 | 25 | 25 | 28 |