Hardness comparison table Conversion numbers of steel Brinell Hardness (HB) 10mm Ball Load 3000 kgf i Vickers & Hardness Rockwell Hardness Shore Ha

Hardness comparison table Conversion numbers of steel Brinell Hardness (HB) 10mm Ball Load 3000 kgf i Vickers & Hardness Rockwell Hardness Shore Ha

Hardness comparison table Conversion numbers of steel Brinell Hardness (HB) 10mm Ball Load 3000 kgf i Vickers & Hardness Rockwell Hardness Shore Hardness Tensile Strength (Approx.) Mpa Standard Ball Tungsten Carbide Ball A Scale Load:60kgf Diamond Point (HRA) B Scale Load:100kgf 1 16" Ball (HRB) C Scale Load:150kgf Diamond Point (HRC) D Scale Load:100kgf Diamond Point (HRD) 940 85.6 68.0 76.9 97 920 85.3 67.5 76.5 96 900 85.0 67.0 76.1 95 (767) 880 84.7 66.4 75.7 93 (757) 860 84.4 65.9 75.3 92 (745) 840 84.1 65.3 74.8 91 (733) 820 83.8 64.7 74.3 90 (722) 800 83.4 64.0 73.8 88 (712) (710) 780 83.0 63.3 73.3 87 (698) 760 82.6 62.5 72.6 86 (684) 740 82.2 61.8 72.1 (682) 737 82.2 61.7 72.0 84 (670) 720 81.8 61.0 71.5 83 (656) 700 81.3 60.1 70.8 (653) 697 81.2 60.0 70.7 81 (647) 690 81.1 59.7 70.5 (638) 680 80.8 59.2 70.1 80 630 670 80.6 58.8 69.8 627 667 80.5 58.7 69.7 79 677 80.7 59.1 70.0 601 640 79.8 57.3 68.7 77 640 79.8 57.3 68.7 578 615 79.1 56.0 67.7 75 607 78.8 55.6 67.4 555 591 78.4 54.7 66.7 75 2055 579 78.0 54.0 66.1 2015 534 569 77.8 53.5 65.8 71 1985 533 77.1 52.5 65.0 1915 514 547 76.9 52.1 64.7 70 1890 (495) 539 76.7 51.6 64.3 1855 530 76.4 51.1 63.9 1825 495 528 76.3 51.0 63.8 68 1820 (477) 516 75.9 50.3 63.2 1780 508 75.6 49.6 62.7 1740 477 508 75.6 49.6 62.7 66 1740 (461) 495 75.1 48.8 61.9 1680 491 74.9 48.5 61.7 1670 461 491 74.9 48.5 61.7 65 1670 444 474 74.3 47.2 61.0 1595 472 74.2 47.1 60.8 1585 444 472 74.2 47.1 60.8 63 1585 Brinell Hairiness (HB) 10mm BallLoad 3000 kgf x Vickers & Hardness Rockwell Hardness i Shore SS. Hardness Tensile Strength (Approx.) Mpa Standard Ball Tungsten Carbide Ball A Scale Load:60kgf Diamond Point (HRA) B Scale Load:1 OQkgf 1 16' Ball (HRB) C Scale Load:150kgf Diamond Point (HRC) D Scale Load:100kgf Diamond Point (HRD) 429 429 455 73.4 45.7 59.7 61 1510 415 415 440 72.8 44.5 58.8 59 1460 401 401 425 72.0 43.1 57.8 58 1390 388 388 410 71.4 41.8 56.8 56 1330 375 375 396 70.6 40.4 55.7 54 1270 363 363 383 70.0 39.1 54.6 52 1220 352 352 372 69.3 (1105)) 37.9 53.8 51 1180 341 341 360 68.7 (109.0) 36.6 52.8 50 1130 331 331 350 68.1 (108.5) 35.5 51.9 48 1095 321 321 339 67.5 (108.0) 34.3 51.0 47 1060 311 311 328 66.9 (107.5) 33.1 50.0 46 1025 302 302 319 66.3 (107.0) 32.1 49.3 45 1005 293 293 309 65.7 (106.0) 30.9 48.3 43 970 285 285 301 65.3 (105.5) 29.9 47.6 950 277 277 292 64.6 (104.5) 28.8 46.7 41 925 269 269 284 64.1 (104.0) 27.6 45.9 40 895 262 262 276 63.6 (103.0) 26.6 45.0 39 875 255 255 269 63.0 (102.0) 25.4 44.2 38 850 248 248 261 62.5 (101.0) 24.2 43.2 37 825 241 241 253 61.8 100 22.8 42.0 36 800 235 235 247 61.4 99.0 21.7 41.4 35 785 229 229 241 60.8 98.2 20.5 40.5 34 765 223 223 234 97.3 (18.8) 217 217 228 96.4 (17.5) 33 725 212 212 222 95.5 (16.0) 705 207 207 218 94.6 (15.2) 32 690 201 201 212 93.8 (13.8) 31 675 197 197 207 92.8 (12.7) 30 655 192 192 202 91.9 (11.5) 29 640 187 187 196 90.7 (10.0) 620 183 183 192 90.0 (9.0) 28 615 179 179 188 89.0 (8.0) 27 600 174 174 182 87.8 (6.4) 585 170 170 178 86.8 (5.4) 26 570 167 167 175 86.0 (4.4) 560 163 163 171 85.0 (3.3) 25 545 156 156 163 82.9 (0.9) 525 149 149 156 80.8 23 505 143 143 150 78.7 22 490 137 137 143 76.4 21 460 131 131 137 74.0 450 126 126 132 72.0 20 435 121 121 127 69.8 19 415 116 116 122 67.6 18 400 111 111 117 65.7 15 385 (Note 1) Above list is the same as that at AMS Metals Hand book with tensile strength in approximate metric value and Brinell hardness over a recommended range. (Note 2) 1MPa1N mm2 (Note 3) Figures in are rarely used and are included for reference. This list has been taken from JIS Handbook Steel I. Q035 TECHNICAL DATA hardness