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Hardness To Tensile Conversion Table
The table below converts Brinell Hardness to Rockwell Hardness scales and vice versa, then compares those to the approximate tensile strength that those scales indicate.
Brinell Hardness | Rockwell Hardness | |||
Tungsten Carbide Ball 3000 kg |
A Scale 60 kg |
B Scale 100 kg |
C Scale 150 kg |
Tensile Strength (approx.) |
_ | 86 | _ | 68 | _ |
_ | 85 | _ | 68 | _ |
_ | 85 | _ | 67 | _ |
767 | 84 | _ | 66 | _ |
757 | 84 | _ | 66 | _ |
745 | 84 | _ | 65 | _ |
733 | 84 | _ | 65 | _ |
722 | 83 | _ | 64 | _ |
712 | _ | _ | _ | _ |
710 | 83 | _ | 63 | _ |
698 | 83 | _ | 62 | _ |
684 | 82 | _ | 62 | _ |
682 | 82 | _ | 62 | _ |
670 | 82 | _ | 61 | _ |
656 | 81 | _ | 60 | _ |
653 | 81 | _ | 60 | _ |
647 | 81 | _ | 60 | _ |
638 | 81 | _ | 59 | 329,000 |
630 | 81 | _ | 59 | 324,000 |
627 | 80 | _ | 59 | 323,000 |
601 | 80 | _ | 57 | 309,000 |
578 | 79 | _ | 56 | 297,000 |
555 | 78 | _ | 55 | 285,000 |
534 | 78 | _ | 54 | 274,000 |
514 | 77 | _ | 52 | 263,000 |
495 | 76 | _ | 51 | 253,000 |
477 | 76 | _ | 50 | 243,000 |
461 | 75 | _ | 48 | 235,000 |
444 | 74 | _ | 47 | 225,000 |
429 | 73 | _ | 46 | 217,000 |
401 | 72 | _ | 43 | 202,000 |
388 | 71 | _ | 42 | 195,000 |
375 | 71 | _ | 40 | 188,000 |
363 | 70 | _ | 39 | 182,000 |
352 | 69 | _ | 38 | 176,000 |
341 | 69 | _ | 37 | 170,000 |
331 | 68 | _ | 36 | 166,000 |
321 | 68 | _ | 34 | 160,000 |
311 | 67 | _ | 33 | 155,000 |
302 | 66 | _ | 32 | 150,000 |
293 | 66 | _ | 31 | 145,000 |
285 | 65 | _ | 30 | 141,000 |
277 | 65 | _ | 29 | 137,000 |
269 | 64 | _ | 28 | 133,000 |
262 | 64 | _ | 27 | 129,000 |
255 | 63 | _ | 25 | 126,000 |
248 | 62 | _ | 24 | 122,000 |
241 | 62 | 100 | 23 | 118,000 |
235 | 61 | 99 | 22 | 115,000 |
229 | 61 | 98 | 20 | 111,000 |
223 | _ | 97 | 20 | _ |
217 | _ | 96 | 18 | 105,000 |
212 | _ | 96 | 17 | 102,000 |
207 | _ | 95 | 16 | 100,000 |
201 | _ | 94 | 15 | 98,000 |
197 | _ | 93 | _ | 95,000 |
192 | _ | 92 | _ | 93,000 |
187 | _ | 91 | _ | 90,000 |
183 | _ | 90 | _ | 89,000 |
179 | _ | 89 | _ | 87,000 |
174 | _ | 88 | _ | 85,000 |
170 | _ | 87 | _ | 83,000 |
167 | _ | 86 | _ | 81,000 |
163 | _ | 85 | _ | 79,000 |
156 | _ | 83 | _ | 76,000 |
149 | _ | 81 | _ | 73,000 |
143 | _ | 79 | _ | 71,000 |
137 | _ | 76 | _ | 67,000 |
131 | _ | 74 | _ | 65,000 |
126 | _ | 72 | _ | 63,000 |
121 | _ | 70 | _ | 60,000 |
116 | _ | 68 | _ | 58,000 |
111 | _ | 66 | _ | 56,000 |
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