Hardness Conversion Table
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Use this table for comparing hardness of carbon steels, cast steels and low alloy steels in a heat treated and hot formed condition.
According to ISO 18265.
Tensile Strength | Vickers Hardness HV | Brinell Hardness* | Rockwell hardness | ||
---|---|---|---|---|---|
N/mm2 | F ≥ 98 N | HB | HRB | HRC | HRA |
255 | 80 | 76 | – | – | – |
270 | 85 | 80,7 | 41 | – | – |
285 | 90 | 85,5 | 48 | – | – |
305 | 95 | 90,2 | 52 | – | – |
320 | 100 | 95 | 56,2 | – | – |
335 | 105 | 99,8 | – | – | – |
350 | 110 | 105 | 62,3 | – | – |
370 | 115 | 109 | – | – | – |
385 | 120 | 114 | 66,7 | – | – |
400 | 125 | 119 | – | – | – |
415 | 130 | 124 | 71,2 | – | – |
430 | 135 | 128 | – | – | – |
450 | 140 | 133 | 75 | – | – |
465 | 145 | 138 | – | – | – |
480 | 150 | 143 | 78,7 | – | – |
495 | 155 | 147 | – | – | – |
510 | 160 | 152 | 81,7 | – | – |
530 | 165 | 156 | – | – | – |
545 | 170 | 162 | 85 | – | – |
560 | 175 | 166 | – | – | – |
575 | 180 | 171 | 87,1 | – | – |
595 | 185 | 176 | – | – | – |
610 | 190 | 181 | 89,5 | – | – |
625 | 195 | 185 | – | – | – |
640 | 200 | 190 | 91,5 | – | – |
660 | 205 | 195 | 92,5 | – | – |
675 | 210 | 199 | 93,5 | – | – |
690 | 215 | 204 | 94 | – | – |
705 | 220 | 209 | 95 | – | – |
720 | 225 | 214 | 96 | – | – |
740 | 230 | 219 | 96,7 | – | – |
755 | 235 | 223 | – | – | – |
770 | 240 | 228 | 98,1 | 20,3 | 60,7 |
785 | 245 | 233 | – | 21,3 | 61,2 |
800 | 250 | 238 | 99,5 | 22,2 | 61,6 |
820 | 255 | 242 | -101 | 23,1 | 62 |
835 | 260 | 247 | – | 24 | 62,4 |
850 | 265 | 252 | -102 | 24,8 | 62,7 |
865 | 270 | 257 | – | 25,6 | 63,1 |
880 | 275 | 261 | -104 | 26,4 | 63,5 |
900 | 280 | 266 | – | 27,1 | 63,8 |
915 | 285 | 271 | -105 | 27,8 | 64,2 |
930 | 290 | 276 | – | 28,5 | 64,5 |
950 | 295 | 280 | – | 29,2 | 64,8 |
965 | 300 | 285 | – | 29,8 | 65,2 |
995 | 310 | 295 | – | 31 | 65,8 |
1030 | 320 | 304 | – | 32,2 | 66,4 |
1060 | 330 | 314 | – | 33,3 | 67 |
1095 | 340 | 323 | – | 34,3 | 67,6 |
1125 | 350 | 333 | – | 35,5 | 68,1 |
1155 | 360 | 342 | – | 36,6 | 68,7 |
1190 | 370 | 352 | – | 37,7 | 69,2 |
1220 | 380 | 361 | – | 38,8 | 69,8 |
1255 | 390 | 371 | – | 39,8 | 70,3 |
1290 | 400 | 380 | – | 40,8 | 70,8 |
1320 | 410 | 390 | – | 41,8 | 71,4 |
1350 | 420 | 399 | – | 42,7 | 71,8 |
1385 | 430 | 409 | – | 43,6 | 72,3 |
1420 | 440 | 418 | – | 44,5 | 72,8 |
1455 | 450 | 428 | – | 45,3 | 73,3 |
1485 | 460 | 437 | – | 46,1 | 73,6 |
1520 | 470 | 447 | – | 46,9 | 74,1 |
1555 | 480 | -465 | – | 47,7 | 74,5 |
1595 | 490 | -466 | – | 48,4 | 74,9 |
1630 | 500 | -475 | – | 49,1 | 75,3 |
1665 | 510 | -485 | – | 49,8 | 75,7 |
1700 | 520 | -494 | – | 50,5 | 76,1 |
1740 | 530 | -504 | – | 51,1 | 76,4 |
1775 | 540 | -513 | – | 51,7 | 76,7 |
1810 | 550 | -523 | – | 52,3 | 77 |
1845 | 560 | -532 | – | 53 | 77,4 |
1880 | 570 | -542 | – | 53,6 | 77,8 |
1920 | 580 | -551 | – | 54,1 | 78 |
1955 | 590 | -561 | – | 54,7 | 78,4 |
1995 | 600 | -570 | – | 55,2 | 78,6 |
2030 | 610 | -580 | – | 55,7 | 78,9 |
2070 | 620 | -589 | – | 56,3 | 79,2 |
2105 | 630 | -599 | – | 56,8 | 79,5 |
2145 | 640 | -608 | – | 57,3 | 79,8 |
2180 | 650 | -618 | – | 57,8 | 80 |
– | 660 | – | – | 58,3 | 80,3 |
– | 670 | – | – | 58,8 | 80,6 |
– | 680 | – | – | 59,2 | 80,8 |
– | 690 | – | – | 59,7 | 81,1 |
– | 700 | – | – | 60,1 | 81,3 |
– | 720 | – | – | 61 | 81,8 |
– | 740 | – | – | 61,8 | 82,2 |
– | 760 | – | – | 62,5 | 82,6 |
– | 780 | – | – | 63,3 | 83 |
– | 800 | – | – | 64 | 83,4 |
– | 820 | – | – | 64,7 | 83,8 |
– | 840 | – | – | 65,3 | 84,1 |
– | 860 | – | – | 65,9 | 84,4 |
– | 880 | – | – | 66,4 | 84,7 |
– | 900 | – | – | 67 | 85 |
– | 920 | – | – | 67,5 | 85,3 |
– | 940 | – | – | 68 | 85,6 |
* Calculated with: HB = 0,95 · HV
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