Блок твердости по Роквеллу
| name | Rectangular Brinell hardness block |
| specification | 150-250HBW10/3000（rectangle） |
| 150-250HBW5/750（rectangle） | |
| 150-250HBW2.5/187.5（rectangle） | |
| 75-125HBW10/1000（rectangle） | |
| 75-125HBW5/250（rectangle） | |
| 75-125HBW2.5/62.5（rectangle） |
| Name | Class A standard Rockwell hardness block |
| specification | 60-70HRC |
| 40-50HRC | |
| 20-30HRC | |
| 60-70HRA | |
| 70-85HRA | |
| 85-95HRBW |
| Name | Standard Rockwell hardness block |
| specification | 60-70HRC |
| 50-55HRC | |
| 40-50HRC | |
| 30-35HRC | |
| 20-30HRC | |
| 70-85HRA | |
| 60-70HRA | |
| 85-95HRBW | |
| 60-70HRBW |
| Name | Grade AA standard Vickers hardness block（ASTM American Standard)） |
| specification | 700-800HV3 |
| 700-800HV5 | |
| 700-800HV10 | |
| 700-800HV30 | |
| 700-800HV50 | |
| 400-600HV5 | |
| 400-600HV10 | |
| 400-600HV30 | |
| 175-225HV5 |
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