Technology
Comparison Table of Hardness
| Rock well Hard ness C Scale 50kg Brale (HRC) |
Diamond Pyr amid Hard ness Number. Vick ers (HV) |
Brinell Hard ness Stan dard 10mm Ball 29. 42kN (HB) |
Rock well Hard ness A Scale 60kg Brale (HRA) |
Shore Scl ero scope Hard ness Number (HS) |
App rox Ten sile Stre ngth N/mm2 |
|---|---|---|---|---|---|
| 68 | 940 | - | 85. 6 |
97 | - |
| 67 | 900 | - | 85. 5 |
95 | - |
| 66 | 865 | - | 84. 5 |
92 | - |
| 65 | 832 | - | 83. 9 |
91 | - |
| 64 | 800 | - | 83. 4 |
88 | - |
| 63 | 772 | - | 82. 8 |
87 | - |
| 62 | 746 | - | 82. 3 |
85 | - |
| 61 | 720 | - | 81. 8 |
83 | - |
| 60 | 697 | - | 81. 2 |
81 | - |
| 59 | 674 | - | 80. 7 |
80 | - |
| 58 | 653 | - | 80. 1 |
78 | - |
| 57 | 633 | - | 79. 6 |
76 | - |
| 56 | 613 | - | 79. 0 |
75 | - |
| 55 | 595 | - | 78. 5 |
74 | 2079 |
| 54 | 577 | - | 78. 0 |
72 | 2010 |
| 53 | 560 | - | 77. 4 |
71 | 1952 |
| 52 | 544 | 500 | 76. 8 |
69 | 1883 |
| 51 | 528 | 487 | 76. 3 |
68 | 1824 |
| 50 | 513 | 475 | 75. 9 |
67 | 1755 |
| 49 | 498 | 464 | 75. 2 |
66 | 1687 |
| 48 | 484 | 451 | 74. 7 |
64 | 1639 |
| 47 | 471 | 442 | 74. 1 |
63 | 1578 |
| 46 | 458 | 432 | 73. 6 |
62 | 1530 |
| 45 | 446 | 421 | 73. 1 |
60 | 1481 |
| 44 | 434 | 409 | 72. 5 |
58 | 1432 |
| 43 | 423 | 400 | 72. 0 |
57 | 1383 |
| 42 | 412 | 390 | 71. 5 |
56 | 1334 |
| 41 | 402 | 381 | 70. 9 |
55 | 1294 |
| 40 | 392 | 371 | 70. 4 |
54 | 1245 |
| 39 | 382 | 362 | 69. 9 |
52 | 1216 |
| 38 | 372 | 353 | 69. 4 |
51 | 1177 |
| 37 | 363 | 344 | 68. 9 |
50 | 1157 |
| 36 | 354 | 336 | 68. 4 |
49 | 1118 |
| 35 | 345 | 327 | 67. 9 |
48 | 1079 |
| 34 | 336 | 319 | 67. 4 |
47 | 1059 |
| 33 | 327 | 311 | 66. 8 |
46 | 1030 |
| 32 | 318 | 301 | 66. 3 |
44 | 1000 |
| 31 | 310 | 294 | 65. 8 |
43 | 981 |
| 30 | 302 | 286 | 65. 3 |
42 | 952 |
| 29 | 294 | 279 | 64. 7 |
41 | 932 |
| 28 | 285 | 271 | 64. 3 |
41 | 912 |
| 27 | 279 | 264 | 63. 8 |
40 | 883 |
| 26 | 272 | 258 | 63. 3 |
38 | 863 |
| 25 | 266 | 253 | 62. 8 |
38 | 843 |
| 24 | 260 | 247 | 62. 4 |
37 | 824 |
| 23 | 254 | 243 | 62. 0 |
36 | 804 |
| 22 | 248 | 237 | 61. 5 |
35 | 785 |
| 21 | 243 | 231 | 61. 0 |
35 | 775 |
| 20 | 238 | 226 | 60. 5 |
34 | 755 |
| (18) | 230 | 219 | - | 33 | 736 |
| (16) | 222 | 212 | - | 32 | 706 |
| (14) | 213 | 203 | - | 31 | 677 |
| (12) | 204 | 194 | - | 29 | 647 |
| (10) | 196 | 187 | - | 28 | 618 |
| (8) | 188 | 179 | - | 27 | 598 |
| (6) | 180 | 171 | - | 26 | 579 |
| (4) | 173 | 165 | - | 25 | 549 |
| (2) | 166 | 158 | - | 24 | 530 |
| (0) | 160 | 152 | - | 24 | 520 |





