hardness conversion table - brinell, rockwell, vickers - engineer's handbook

4/1/2014 Hardness Conversion Table - Brinell, Rockwell, Vickers - Engineer's Handbook

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Reference Tables -- Hardness Conversion Table - Brinell, Rockwell

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Applies for plain carbon and low-alloy steels and cast steel and to a limited extent for high-alloy

and/or work hardened steel.

Hardness Conversion Table

Tensile Strength

(N/mm2)

Brinell Hardness (BHN)

Vickers Hardness (HV)

RockwellHardness

(HRB)

Rockwell Hardness (HRC)

285 86 90

320 95 100 56.2

350 105 110 62.3

385 114 120 66.7

415 124 130 71.2

450 133 140 75.0

480 143 150 78.7

510 152 160 81.7

545 162 170 85.0

575 171 180 87.1

610 181 190 89.5

640 190 200 91.5

675 199 210 93.5

705 209 220 95.0

740 219 230 96.7

770 228 240 98.1

800 238 250 99.5

820 242 255 23.1

850 252 265 24.8

880 261 275 26.4

900 266 280 27.1

930 276 290 28.5

950 280 295 29.2

995 295 310 31.0

1030 304 320 32.2

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1060 314 330 33.3

1095 323 340 34.4

1125 333 350 35.5

1155 342 360 36.6

1190 352 370 37.7

1220 361 380 38.8

1255 371 390 39.8

1290 380 400 40.8

1320 390 410 41.8

1350 399 420 42.7

1385 409 430 43.6

1420 418 440 44.5

1455 428 450 45.3

1485 437 460 46.1

1520 447 470 46.9

1555 456 480 47.7

1595 466 490 48.4

1630 475 500 49.1

1665 485 510 49.8

1700 494 520 50.5

1740 504 530 51.1

1775 513 540 51.7

1810 523 550 52.3

1845 532 560 53.0

1880 542 570 53.6

1920 551 580 54.1

1955 561 590 54.7

1995 570 600 55.2

2030 580 610 55.7

2070 589 620 56.3

2105 599 630 56.8

2145 608 640 57.3

2180 618 650 57.8

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hardness conversion table - brinell, rockwell, vickers - engineer's handbook

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