
| Rockwell C Scale Hardness | Vickers Hardness | Standard ball Brinell H | Tungsten Carbide ball ardness | A scale Ro | B scale ckwell Hardness | D scale �2 | 15-N scale Rockwel i | 30-N scale l Superficial H | i ardness 45-N scale | Shore Hardness | Tensile Strength MPa�1 | Rockwell C Scale Hardness�2 |
| HRC | HV | H | B | HRA | HRB | HRD | HS15N | HS30N | HS45N | HS | - | HRC |
1 : 1Mpa=1N/mm2 2 : In above table, numbers in parenthesis are only for reference. This table is abstracted from SAE J 417.