Rockwell
|
Rockwell Superficial
|
Brinell
|
Vickers
|
Shore
|
Approx Tensile Strength (psi) | ||||||||||
A | B | C | D | E | F | 15-N | 30-N | 45-N | 30-T | 3000 kg | 500 kg | 136 | |||
60kg Brale | 100kg 1/16″ Ball | 150kg Brale | 100kg Brale | 100kg 1/8″ Ball | 60kg 1/16″ Ball | 15kg Brale | 30kg Brale | 45kg Brale | 30 kg 1/16″ Ball | 10mm Ball Steel | 10mm Ball Steel | Diamond Pyramid | Sciero-scope | ||
86.5 | — | 70 | 78.5 | — | — | 94 | 86 | 77.6 | — | — | — | 1076 | 101 | — | |
86 | — | 69 | 77.7 | — | — | 93.5 | 85 | 76.5 | — | — | — | 1044 | 99 | — | |
85.6 | — | 68 | 76.9 | — | — | 93.2 | 84.4 | 75.4 | — | — | — | 940 | 97 | — | |
85 | — | 67 | 76.1 | — | — | 92.9 | 83.6 | 74.2 | — | — | — | 900 | 95 | — | |
84.5 | — | 66 | 75.4 | — | — | 92.5 | 82.8 | 73.2 | — | — | — | 865 | 92 | — | |
83.9 | — | 65 | 74.5 | — | — | 92.2 | 81.9 | 72 | — | 739 | — | 832 | 91 | — | |
83.4 | — | 64 | 73.8 | — | — | 91.8 | 81.1 | 71 | — | 722 | — | 800 | 88 | — | |
82.8 | — | 63 | 73 | — | — | 91.4 | 80.1 | 69.9 | — | 705 | — | 772 | 87 | — | |
82.3 | — | 62 | 72.2 | — | — | 91.1 | 79.3 | 68.8 | — | 688 | — | 746 | 85 | — | |
81.8 | — | 61 | 71.5 | — | — | 90.7 | 78.4 | 67.7 | — | 670 | — | 720 | 83 | — | |
81.2 | — | 60 | 70.7 | — | — | 90.2 | 77.5 | 66.6 | — | 654 | — | 697 | 81 | 320,000 | |
80.7 | — | 59 | 69.9 | — | — | 89.8 | 76.6 | 65.5 | — | 634 | — | 674 | 80 | 310,000 | |
80.1 | — | 58 | 69.2 | — | — | 89.3 | 75.7 | 64.3 | — | 615 | — | 653 | 78 | 300,000 | |
79.6 | — | 57 | 68.5 | — | — | 88.9 | 74.8 | 63.2 | — | 595 | — | 633 | 76 | 290,000 | |
79 | — | 56 | 67.7 | — | — | 88.3 | 73.9 | 62 | — | 577 | — | 613 | 75 | 282,000 | |
78.5 | 120 | 55 | 66.9 | — | — | 87.9 | 73 | 60.9 | — | 560 | — | 595 | 74 | 274,000 | |
78 | 120 | 54 | 66.1 | — | — | 87.4 | 72 | 59.8 | — | 543 | — | 577 | 72 | 266,000 | |
77.4 | 119 | 53 | 65.4 | — | — | 86.9 | 71.2 | 58.6 | — | 525 | — | 560 | 71 | 257,000 | |
76.8 | 119 | 52 | 64.6 | — | — | 86.4 | 70.2 | 57.4 | — | 500 | — | 544 | 69 | 245,000 | |
76.3 | 118 | 51 | 63.8 | — | — | 85.9 | 69.4 | 56.1 | — | 487 | — | 528 | 68 | 239,000 | |
75.9 | 117 | 50 | 63.1 | — | — | 85.5 | 68.5 | 55 | — | 475 | — | 513 | 67 | 233,000 | |
75.2 | 117 | 49 | 62.1 | — | — | 85 | 67.6 | 53.8 | — | 464 | — | 498 | 66 | 227,000 | |
74.7 | 116 | 48 | 61.4 | — | — | 84.5 | 66.7 | 52.5 | — | 451 | — | 484 | 64 | 221,000 | |
74.1 | 116 | 47 | 60.8 | — | — | 83.9 | 65.8 | 51.4 | — | 442 | — | 471 | 63 | 217,000 | |
73.6 | 115 | 46 | 60 | — | — | 83.5 | 64.8 | 50.3 | — | 432 | — | 458 | 62 | 212,000 | |
73.1 | 115 | 45 | 59.2 | — | — | 83 | 64 | 49 | — | 421 | — | 446 | 60 | 206,000 | |
72.5 | 114 | 44 | 58.5 | — | — | 82.5 | 63.1 | 47.8 | — | 409 | — | 434 | 58 | 200,000 | |
72 | 113 | 43 | 57.7 | — | — | 82 | 62.2 | 46.7 | — | 400 | — | 423 | 57 | 196,000 | |
71.5 | 113 | 42 | 56.9 | — | — | 81.5 | 61.3 | 45.5 | — | 390 | — | 412 | 56 | 191,000 | |
70.9 | 112 | 41 | 56.2 | — | — | 80.9 | 60.4 | 44.3 | — | 381 | — | 402 | 55 | 187,000 | |
70.4 | 112 | 40 | 55.4 | — | — | 80.4 | 59.5 | 43.1 | — | 371 | — | 392 | 54 | 182,000 | |
69.9 | 111 | 39 | 54.6 | — | — | 79.9 | 58.6 | 41.9 | — | 362 | — | 382 | 52 | 177,000 | |
69.4 | 110 | 38 | 53.8 | — | — | 79.4 | 57.7 | 40.8 | — | 353 | — | 372 | 51 | 173,000 | |
68.9 | 110 | 37 | 53.1 | — | — | 78.8 | 56.8 | 39.6 | — | 344 | — | 363 | 50 | 169,000 | |
68.4 | 109 | 36 | 52.3 | — | — | 78.3 | 55.9 | 38.4 | — | 336 | — | 354 | 49 | 165,000 | |
67.9 | 109 | 35 | 51.5 | — | — | 77.7 | 55 | 37.2 | — | 327 | — | 345 | 48 | 160,000 | |
67.4 | 108 | 34 | 50.8 | — | — | 77.2 | 54.2 | 36.1 | — | 319 | — | 336 | 47 | 156,000 | |
66.8 | 108 | 33 | 50 | — | — | 76.6 | 53.3 | 34.9 | — | 311 | — | 327 | 46 | 152,000 | |
66.3 | 107 | 32 | 49.2 | — | — | 76.1 | 52.1 | 33.7 | — | 301 | — | 318 | 44 | 147,000 | |
65.8 | 106 | 31 | 48.4 | — | — | 75.6 | 51.3 | 32.5 | — | 294 | — | 310 | 43 | 144,000 | |
65.3 | 105 | 30 | 47.7 | — | — | 75 | 50.4 | 31.3 | — | 286 | — | 302 | 42 | 140,000 | |
64.7 | 104 | 29 | 47 | — | — | 74.5 | 49.5 | 30.1 | — | 279 | — | 294 | 41 | 137,000 | |
64.3 | 104 | 28 | 46.1 | — | — | 73.9 | 48.6 | 28.9 | — | 271 | — | 286 | 41 | 133,000 | |
63.8 | 103 | 27 | 45.2 | — | — | 73.3 | 47.7 | 27.8 | — | 264 | — | 279 | 40 | 129,000 | |
63.3 | 103 | 26 | 44.6 | — | — | 72.8 | 46.8 | 26.7 | — | 258 | — | 272 | 39 | 126,000 | |
62.8 | 102 | 25 | 43.8 | — | — | 72.2 | 45.9 | 25.5 | — | 253 | — | 266 | 38 | 124,000 | |
62.4 | 101 | 24 | 43.1 | — | — | 71.6 | 45 | 24.3 | — | 247 | — | 260 | 37 | 121,000 | |
62 | 100 | 23 | 42.1 | — | — | 71 | 44 | 23.1 | 82 | 240 | 201 | 254 | 36 | 118,000 | |
61.5 | 99 | 22 | 41.6 | — | — | 70.5 | 43.2 | 22 | 81.5 | 234 | 195 | 248 | 35 | 115,000 | |
61 | 98 | 21 | 40.9 | — | — | 69.9 | 42.3 | 20.7 | 81 | 228 | 189 | 243 | 35 | 112,000 | |
60.5 | 97 | 20 | 40.1 | — | — | 69.4 | 41.5 | 19.6 | 80.5 | 222 | 184 | 238 | 34 | 109,000 | |
59 | 96 | 18 | — | — | — | — | — | — | 80 | 216 | 179 | 230 | 33 | 106,000 | |
58 | 95 | 16 | — | — | — | — | — | — | 79 | 210 | 175 | 222 | 32 | 103,000 | |
57.5 | 94 | 15 | — | — | — | — | — | — | 78.5 | 205 | 171 | 213 | 31 | 100,000 | |
57 | 93 | 13 | — | — | — | — | — | — | 78 | 200 | 167 | 208 | 30 | 98,000 | |
56.5 | 92 | 12 | — | — | — | — | — | — | 77.5 | 195 | 163 | 204 | 29 | 96,000 | |
56 | 91 | 10 | — | — | — | — | — | — | 77 | 190 | 160 | 196 | 28 | 93,000 | |
55.5 | 90 | 9 | — | — | — | — | — | — | 76 | 185 | 157 | 192 | 27 | 91,000 | |
55 | 89 | 8 | — | — | — | — | — | — | 75.5 | 180 | 154 | 188 | 26 | 88,000 | |
54 | 88 | 7 | — | — | — | — | — | — | 75 | 176 | 151 | 184 | 26 | 86,000 | |
53.5 | 87 | 6 | — | — | — | — | — | — | 74.5 | 172 | 148 | 180 | 26 | 84,000 | |
53 | 86 | 5 | — | — | — | — | — | — | 74 | 169 | 145 | 176 | 25 | 83,000 | |
52.5 | 85 | 4 | — | — | — | — | — | — | 73.5 | 165 | 142 | 173 | 25 | 81,000 | |
52 | 84 | 3 | — | — | — | — | — | — | 73 | 162 | 140 | 170 | 25 | 79,000 | |
51 | 83 | 2 | — | — | — | — | — | — | 72 | 159 | 137 | 166 | 24 | 78,000 | |
50.5 | 82 | 1 | — | — | — | — | — | — | 71.5 | 156 | 135 | 163 | 24 | 76,000 | |
50 | 81 | 0 | — | — | — | — | — | — | 71 | 153 | 133 | 160 | 24 | 75,000 | |
49.5 | 80 | — | — | — | — | — | — | — | 70 | 150 | 130 | — | — | 73,000 | |
49 | 79 | — | — | — | — | — | — | — | 69.5 | 147 | 128 | — | — | — | |
48.5 | 78 | — | — | — | — | — | — | — | 69 | 144 | 126 | — | — | — | |
48 | 77 | — | — | — | — | — | — | — | 68 | 141 | 124 | — | — | — | |
47 | 76 | — | — | — | — | — | — | — | 67.5 | 139 | 122 | — | — | — | |
46.5 | 75 | — | — | — | 99.5 | — | — | — | 67 | 137 | 120 | — | — | — | |
46 | 74 | — | — | — | 99 | — | — | — | 66 | 135 | 118 | — | — | — | |
45.5 | 73 | — | — | — | 98.5 | — | — | — | 65.5 | 132 | 116 | — | — | — | |
45 | 72 | — | — | — | 98 | — | — | — | 65 | 130 | 114 | — | — | — | |
44.5 | 71 | — | — | 100 | 97.5 | — | — | — | 64.2 | 127 | 112 | — | — | — | |
44 | 70 | — | — | 99.5 | 97 | — | — | — | 63.5 | 125 | 110 | — | — | — | |
43.5 | 69 | — | — | 99 | 96 | — | — | — | 62.8 | 123 | 109 | — | — | — | |
43 | 68 | — | — | 98 | 95.5 | — | — | — | 62 | 121 | 107 | — | — | — | |
42.5 | 67 | — | — | 97.5 | 95 | — | — | — | 61.4 | 119 | 106 | — | — | — | |
42 | 66 | — | — | 97 | 94.5 | — | — | — | 60.5 | 117 | 104 | — | — | — | |
41.8 | 65 | — | — | 96 | 94 | — | — | — | 60.1 | 116 | 102 | — | — | — | |
41.5 | 64 | — | — | 95.5 | 93.5 | — | — | — | 59.5 | 114 | 101 | — | — | — | |
41 | 63 | — | — | 95 | 93 | — | — | — | 58.7 | 112 | 99 | — | — | — | |
40.5 | 62 | — | — | 94.5 | 92 | — | — | — | 58 | 110 | 98 | — | — | — | |
40 | 61 | — | — | 93.5 | 91.5 | — | — | — | 57.3 | 108 | 96 | — | — | — | |
39.5 | 60 | — | — | 93 | 91 | — | — | — | 56.5 | 107 | 95 | — | — | — | |
39 | 59 | — | — | 92.5 | 90.5 | — | — | — | 55.9 | 106 | 94 | — | — | — | |
38.5 | 58 | — | — | 92 | 90 | — | — | — | 55 | 104 | 92 | — | — | — | |
38 | 57 | — | — | 91 | 89.5 | — | — | — | 54.6 | 102 | 91 | — | — | — | |
37.8 | 56 | — | — | 90.5 | 89 | — | — | — | 54 | 101 | 90 | — | — | — | |
37.5 | 55 | — | — | 90 | 88 | — | — | — | 53.2 | 99 | 89 | — | — | — | |
37 | 54 | — | — | 89.5 | 87.5 | — | — | — | 52.5 | — | 87 | — | — | — | |
36.5 | 53 | — | — | 89 | 87 | — | — | — | 51.8 | — | 86 | — | — | — | |
36 | 52 | — | — | 88 | 86.5 | — | — | — | 51 | — | 85 | — | — | — | |
35.5 | 51 | — | — | 87.5 | 86 | — | — | — | 50.4 | — | 84 | — | — | — | |
35 | 50 | — | — | 87 | 85.5 | — | — | — | 49.5 | — | 83 | — | — | — | |
34.8 | 49 | — | — | 86.5 | 85 | — | — | — | 49.1 | — | 82 | — | — | — | |
34.5 | 48 | — | — | 85.5 | 84.5 | — | — | — | 48.5 | — | 81 | — | — | — | |
34 | 47 | — | — | 85 | 84 | — | — | — | 47.7 | — | 80 | — | — | — | |
33.5 | 46 | — | — | 84.5 | 83 | — | — | — | 47 | — | 79 | — | — | — | |
33 | 45 | — | — | 84 | 82.5 | — | — | — | 46.2 | — | 79 | — | — | — | |
32.5 | 44 | — | — | 83.5 | 82 | — | — | — | 45.5 | — | 78 | — | — | — | |
32 | 43 | — | — | 82.5 | 81.5 | — | — | — | 44.8 | — | 77 | — | — | — | |
31.5 | 42 | — | — | 82 | 81 | — | — | — | 44 | — | 76 | — | — | — | |
31 | 41 | — | — | 81.5 | 80.5 | — | — | — | 43.4 | — | 75 | — | — | — | |
30.8 | 40 | — | — | 81 | 79.5 | — | — | — | 43 | — | 74 | — | — | — | |
30.5 | 39 | — | — | 80 | 79 | — | — | — | 42.1 | — | 74 | — | — | — | |
30 | 38 | — | — | 79.5 | 78.5 | — | — | — | 41.5 | — | 73 | — | — | — | |
29.5 | 37 | — | — | 79 | 78 | — | — | — | 40.7 | — | 72 | — | — | — | |
29 | 36 | — | — | 78.5 | 77.5 | — | — | — | 40 | — | 71 | — | — | — | |
28.5 | 35 | — | — | 78 | 77 | — | — | — | 39.3 | — | 71 | — | — | — | |
28 | 34 | — | — | 77 | 76.5 | — | — | — | 38.5 | — | 70 | — | — | — | |
27.8 | 33 | — | — | 76.5 | 75.5 | — | — | — | 37.9 | — | 69 | — | — | — | |
27.5 | 32 | — | — | 76 | 75 | — | — | — | 37.5 | — | 68 | — | — | — | |
27 | 31 | — | — | 75.5 | 74.5 | — | — | — | 36.6 | — | 68 | — | — | — | |
26.5 | 30 | — | — | 75 | 74 | — | — | — | 36 | — | 67 | — | — | — | |
26 | 29 | — | — | 74 | 73.5 | — | — | — | 35.2 | — | 66 | — | — | — | |
25.5 | 28 | — | — | 73.5 | 73 | — | — | — | 34.5 | — | 66 | — | — | — | |
25 | 27 | — | — | 73 | 72.5 | — | — | — | 33.8 | — | 65 | — | — | — | |
24.5 | 26 | — | — | 72.5 | 72 | — | — | — | 33.1 | — | 65 | — | — | — | |
24.2 | 25 | — | — | 72 | 71 | — | — | — | 32.4 | — | 64 | — | — | — | |
24 | 24 | — | — | 71 | 70.5 | — | — | — | 32 | — | 64 | — | — | — | |
23.5 | 23 | — | — | 70.5 | 70 | — | — | — | 31.1 | — | 63 | — | — | — | |
23 | 22 | — | — | 70 | 69.5 | — | — | — | 30.4 | — | 63 | — | — | — | |
22.5 | 21 | — | — | 69.5 | 69 | — | — | — | 29.7 | — | 62 | — | — | — | |
22 | 20 | — | — | 68.5 | 68.5 | — | — | — | 29 | — | 62 | — | — | — | |
21.5 | 19 | — | — | 68 | 68 | — | — | — | 28.1 | — | 61 | — | — | — | |
21.2 | 18 | — | — | 67.5 | 67 | — | — | — | 27.4 | — | 61 | — | — | — | |
21 | 17 | — | — | 67 | 66.5 | — | — | — | 26.7 | — | 60 | — | — | — | |
20.5 | 16 | — | — | 66.5 | 66 | — | — | — | 26 | — | 60 | — | — | — | |
20 | 15 | — | — | 65.5 | 65.5 | — | — | — | 25.3 | — | 59 | — | — | — | |
— | 14 | — | — | 65 | 65 | — | — | — | 24.6 | — | 59 | — | — | — | |
— | 13 | — | — | 64.5 | 64.5 | — | — | — | 23.9 | — | 58 | — | — | — | |
— | 12 | — | — | 64 | 64 | — | — | — | 23.5 | — | 58 | — | — | — | |
— | 11 | — | — | 63.5 | 63.5 | — | — | — | 22.6 | — | 57 | — | — | — | |
— | 10 | — | — | 62.5 | 63 | — | — | — | 21.9 | — | 57 | — | — | — | |
— | 9 | — | — | 62 | 62 | — | — | — | 21.2 | — | 56 | — | — | — | |
— | 8 | — | — | 61.5 | 61.5 | — | — | — | 20.5 | — | 56 | — | — | — | |
— | 7 | — | — | 61 | 61 | — | — | — | 19.8 | — | 56 | — | — | — | |
— | 6 | — | — | 60.5 | 60.5 | — | — | — | 19.1 | — | 55 | — | — | — | |
— | 5 | — | — | 60 | 60 | — | — | — | 18.4 | — | 55 | — | — | — | |
— | 4 | — | — | 59 | 59.5 | — | — | — | 18 | — | 55 | — | — | — | |
— | 3 | — | — | 58.5 | 59 | — | — | — | 17.1 | — | 54 | — | — | — | |
— | 2 | — | — | 58 | 58 | — | — | — | 16.4 | — | 54 | — | — | — | |
— | 1 | — | — | 57.5 | 57.5 | — | — | — | 15.7 | — | 53 | — | — | — | |
— | 0 | — | — | 57 | 57 | — | — | — | 15 | — | 53 | — | — | — |