Equivalent Hardness and Tensile Strengths

ROCKWELL DPH
(VICKERS)
TENSILE
STRENGTH
TENSILE
STRENGTH
HRC
150 kgf
Brale
HRA
60 kgf
Brale
30 N
30 kgf
Brale
15 N
15 kgf
Brale
HRB
60 kgf
1/16" Brale
30 T
30 kgf
1/16" Brale
15 T
15 kgf
1/16" Brale
10 kgf
 
N/mm2
 
KPSI
 
====================================================================================
68.0 85.6 84.4 93.2       940    
67.5 85.3 84.0 93.0       920    
67.0 85.0 83.6 92.9       900    
66.4 84.7 83.1 92.7       880    
65.9 84.4 82.7 92.5       860    
65.3 84.1 82.2 92.3       840    
64.7 83.8 81.7 92.1       820    
64.0 83.4 81.1 91.8       800    
63.3 83.0 80.4 91.5       780    
62.5 82.6 79.7 91.2       760    
61.8 82.2 79.1 91.0       740    
61.0 81.8 78.4 90.7       720    
60.1 81.3 77.6 90.3       700    
59.7 81.1 77.2 90.1       690    
59.2 80.8 76.8 89.8       680 2448 355
58.8 80.6 76.4 89.7       670 2400 348
58.3 80.3 75.9 89.5       660 2358 342
57.8 80.0 75.5 89.2       650 2317 336
57.3 79.8 75.1 89.0       640 2262 328
56.8 79.5 74.6 88.8       630 2227 323
56.3 79.2 74.2 88.5       620 2207 320
55.7 78.9 73.7 88.2       610 2138 310
55.2 78.6 73.2 88.0       600 2089 303
54.7 78.4 72.7 87.8       590 2055 298
54.1 78.0 72.1 87.5       580 2020 293
53.6 77.8 71.7 87.2       570 1986 288
53.0 77.4 71.2 86.9       560 1952 283
52.3 77.0 70.5 86.6       550 1903 276
51.7 76.7 70.0 86.3       540 1862 270
51.1 76.4 69.5 86.0       530 1827 265
50.5 76.1 69.0 85.7       520 1793 260
49.8 75.7 68.3 85.4       510 1752 254
49.1 75.3 67.7 85.0       500 1703 247
48.4 74.9 67.1 84.7       490 1662 241
47.7 74.5 66.4 84.3       480 1620 235
46.9 74.1 65.7 83.9       470 1572 228
46.1 73.6 64.9 83.6       460 1538 223
45.3 73.3 64.3 83.2       450 1496 217
44.5 72.8 63.5 82.8       440 1462 212
43.6 72.3 62.7 82.3       430 1414 205
42.7 71.8 61.9 81.8       420 1372 199
41.8 71.4 61.1 81.4       410 1331 193
40.8 70.8 60.2 80.8       400 1289 187
39.8 70.3 59.3 80.3       390 1255 182
38.8 69.8 58.4 79.8       380 1220 177
37.7 69.2 57.4 79.2       370 1186 172
36.6 68.7 56.4 78.6       360 1152 167
35.5 68.1 55.4 78.0       350 1096 159
34.4 67.6 54.4 77.4       340 1069 155
33.3 67.0 53.6 76.8       330 1034 150
32.2 66.4 52.3 76.2 (107)     320 1007 146
31.0 65.8 51.3 75.6 (107)     310 979 142
29.8 65.2 50.2 74.9 (105.5)     300 952 138
29.2 64.8 49.7 74.6 (104.5)     295 938 136
28.5 64.5 49.0 74.2 (104)     290 917 133
27.8 64.2 48.4 73.8       285 897 131
27.1 63.8 47.8 73.4 (103)     280 889 129
26.4 63.5 47.2 73.0 (102.5)     275 876 127
25.6 63.1 46.4 72.6 (102)     270 862 124
24.8 62.7 45.7 72.1       265 841 122
24.0 62.4 45.0 71.6 (101)     260 827 120
23.0 62.0 44.2 71.1 100     255 807 117
22.5 61.5 43.4 70.6       250 800 116
21.3 61.2 42.5 70.1 98.5 82.0 93.0 248 781 114
20.3 60.7 41.7 69.6 98.0 81.8 92.5 240 758 110
(18.0) 59.0     97.0 81.1 92.1 230 717 104
(17.0) 58.9     96.0 80.4 91.8 222 703 102
(15.7) 58.3     95.0 79.8 91.5 218 689 100
(14.3) 57.6     94.0 79.1 91.2 213 676 98
(13.0) 57.0     93.0 78.4 90.8 207 662 96
(11.7) 56.4     92.0 77.8 90.5 204 648 94
(10.2) 55.8     91.0 77.1 90.2 196 620 90
(9.2) 55.2     90.0 76.4 89.9 188 600 87
(8.0) 54.6     89.0 75.8 89.5 184 593 86
(6.9) 54.0     88.0 75.1 89.2 180 579 84
(5.8) 53.4     87.0 74.4 88.9 177 565 82
(4.7) 52.8     86.0 73.8 88.6 173 552 80
(3.6) 52.3     85.0 73.1 88.2 169 545 79


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