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Hardness Conversion Table (Approximate)
Brinell
Hardness | Rockwell
B Scale | Rockwell
C Scale |
Approximate
Tensile
Lbs. p.s.i. | Brinell
Hardness | Rockwell
B Scale |
Approximate
Tensile
Lbs. p.s.i. |
| 653 | | 62 | 324,000 | 217 | 96 | 103,000 |
| 627 | | 60 | 311,000 | 212 | 96 | 103,000 |
| 601 | | 59 | 306,000 | 207 | 95 | 101,000 |
| 578 | | 57 | 290,000 | 202 | 94 | 98,000 |
| 555 | | 56 | 284,000 | 197 | 93 | 96,000 |
| 534 | | 54 | 270,000 | 192 | 92 | 93,000 |
| 514 | | 53 | 263,000 | 187 | 91 | 91,000 |
| 495 | | 51 | 250,000 | 183 | 90 | 89,000 |
| 477 | | 50 | 243,000 | 179 | 89 | 87,000 |
| 461 | | 49 | 236,000 | 174 | 88 | 85,000 |
| 444 | | 47 | 223,000 | 170 | 87 | 83,000 |
| 429 | | 47 | 217,000 | 166 | 86 | 81,000 |
| 415 | | 45 | 211,000 | 163 | 85 | 80,000 |
| 401 | | 42 | 194,000 | 159 | 84 | 78,000 |
| 388 | | 41 | 188,000 | 156 | 83 | 77,000 |
| 375 | | 40 | 182,000 | 153 | 82 | 76,000 |
| 363 | | 38 | 171,000 | 149 | 81 | 75,000 |
| 352 | | 37 | 166,000 | 146 | 80 | 74,000 |
| 331 | | 36 | 162,000 | 143 | 79 | 73,000 |
| 321 | | 34 | 153,000 | 140 | 78 | 71,000 |
| 311 | | 33 | 148,000 | 137 | 77 | 70,000 |
| 302 | | 32 | 144,000 | 134 | 76 | 69,000 |
| 293 | | 31 | 140,000 | 131 | 74 | 67,000 |
| 285 | | 30 | 136,000 | 128 | 73 | 66,000 |
| 277 | | 29 | 132,000 | 126 | 72 | 65,000 |
| 269 | | 28 | 129,000 | 124 | 71 | 63,000 |
| 262 | | 27 | 126,000 | 121 | 70 | 62,000 |
| 255 | | 25 | 120,000 | 118 | 69 | 61,000 |
| 248 | | 24 | 117,000 | 116 | 68 | 60,000 |
| 241 | 100 | 23 | 115,000 | 114 | 67 | 59,000 |
| 235 | 99 | 22 | 112,000 | 112 | 66 | 58,000 |
| 229 | 98 | 21 | 110,000 | 109 | 65 | 57,000 |
| 223 | 97 | 20 | 108,000 | 107 | 64 | 55,000 |
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