调质钢（淬火状态）的硬度对照表如下：
| 维氏硬度 （HV） | 布氏硬度 （HBW） | 洛氏硬度 （HRC） | HR45N | HR30N | HR15N |
|---------------|----------------|----------------|-------|-------|-------|
| 580 | 572| 54 | 78.1 | 59.5 | 71.4 |
| 600 | 580| 54.8 | 78.4 | 59.6 | 71.9 |
| 610 | 585| 55.2 | 78.6 | 59.9 | 72.3 |
| 620 | 591| 55.6 | 78.8 | 60.2 | 72.8 |
| 630 | 597| 56.1 | 79.1 | 60.5 | 73.2 |
| 640 | 604| 56.5 | 79.3 | 60.9 | 73.6 |
| 650 | 611| 56.9 | 79.6 | 61.4 | 74.1 |
| 660 | 619| 57.4 | 80.1 | 62.4 | 75|
| 670 | 627| 57.8 | 80.3 | 63| 75.4 |
| 680 | 636| 58.3 | 80.6 | 63.6 | 75.8 |
| 690 | 646| 58.7 | 80.9 | 64.2 | 76.2 |
| 700 | 656| 59.2 | 81.1 | 64.9 | 76.7 |
| 710 | 666| 59.7 | 81.4 | 65.6 | 77.1 |
| 720 | 677| 60.1 | 81.7 | 66.4 | 77.5 |
| 730 | 687| 60.5 | 82| 67.1 | 78.1 |
| 740 | 697| 60.9 | 82.3 | 67.7 | 78.5 |
| 750 | 707| 61.3 | 82.6 | 68.3 | 79|
| 760 | 717| 61.7 | 82.9 | 68.9 | 79.3 |
| 770 | 727| 62.1 | 83.2 | 69.5 | 80|
| 780 | 737| 62.5 | 83.5 | 70.1 | 80.3 |
| 790 | 747| 62.9 | 83.8 | 70.7 | 80.6 |
| 800 | 757| 63.3 | 84.1 | 71.3 | 80.9 |
| 810 | 767| 63.7 | 84.4 | 71.9 | 81.1 |
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