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| Approximate Hardness Conversion No.'s for Austenitic Stainless Steel Sheet | ||||
| Rockwell Hardness Number B Scale, 100 Kgf (HRB) | Rockwell Hardness Number A Scale, 60 Kgf (HRA) | Rockwell Superficial Hardness No. 15T Scale, 15 Kgf (15T) | Rockwell Superficial Hardness No. 30T Scale, 30 Kgf (30T) | Rockwell Superficial Hardness No. 45T Scale, 45 Kgf (45T) |
| 100 | 61.5 | 91.5 | 80.4 | 70.2 |
| 99 | 60.9 | 91.2 | 79.7 | 69.2 |
| 98 | 60.3 | 90.8 | 79 | 68.2 |
| 97 | 59.7 | 90.4 | 78.3 | 67.2 |
| 96 | 59.1 | 90.1 | 77.7 | 66.1 |
| 95 | 58.5 | 89.7 | 77 | 65.1 |
| 94 | 58 | 89.3 | 76.3 | 64.1 |
| 93 | 57.4 | 88.9 | 75.6 | 63.1 |
| 92 | 56.8 | 88.6 | 74.9 | 62.1 |
| 91 | 56.2 | 88.2 | 74.2 | 61.1 |
| 90 | 55.6 | 87.8 | 73.5 | 60.1 |
| 89 | 55 | 87.5 | 72.8 | 59 |
| 88 | 54.5 | 87.1 | 72.1 | 58 |
| 87 | 53.9 | 86.7 | 71.4 | 57 |
| 86 | 53.3 | 86.4 | 70.7 | 56 |
| 85 | 52.7 | 86 | 70 | 55 |
| 84 | 52.1 | 85.6 | 69.3 | 54 |
| 83 | 51.5 | 85.2 | 68.6 | 52.9 |
| 82 | 50.9 | 84.9 | 67.9 | 51.9 |
| 81 | 50.4 | 84.5 | 67.2 | 50.9 |
| 80 | 49.8 | 84.1 | 66.5 | 49.9 |
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