Address : 299 MOO 6 T.BANGPREANG,
BANGBOR, SAMUTPRAKARN
THAILAND 10560

Call Us : (+66) 2 725 3999
(+66) 2 764 3999
Mail Us : sales@menam.co.th
info@menam.co.th

Hardness Conversion Table

Brinell hardness 10 mm
ball,3.00 kgf load (HB)
Rockwell hardness (HR) Tensile strength (Approximate)
Vickers hardness (HV) standard ball Hultgren ball Tungsten- carbide ball A scale, 60 kgf  load B scale, 100 kgf load C scale, 150 kgf load D scale, 100 kgf load Shore hardness (HS) Austenitic Stainless steel kgf/mm2 Chromium Stainless steel kgf/mm2
600 550 564 78.6 55.2 67.0 74 245
590 542 554 78.4 54.7 66.7
580 532 545 78.0 54.1 66.2 72 236
570 527 535 77.8 53.6 65.8
560 519 525 77.4 53.0 65.4 71 227
550 505 512 17 77.0 52.3 64.8
540 496 503 507 76.7 51.7 64.4 69 218
530 488 495 497 76.4 51.1 63.9
520 480 487 488 76.1 50.5 63.5 67 209
510 473 479 479 75.7 49.8 62.9
500 465 471 471 75.3 49.1 62.2 66 200
490 456 460 460 74.9 48.4 61.6
480 448 452 452 74.5 47.7 61.3 64 189
470 441 442 442 74.1 46.9 60.7
460 433 433 433 73.6 46.1 60.1 62 178
450 425 425 425 73.3 45.3 59.4
440 415 415 415 72.8 44.5 58.8 59 167
430 405 405 405 72.3 46.6 58.2
420 397 397 397 71.8 42.7 57.5 57 156
410 388 388 388 71.4 41.8 56.8
400 379 379 379 70.8 40.8 56.0 55 145 134
390 369 369 369 70.3 39.8 55.2
380 360 360 360 69.88 (110.0) 38.8 54.4 52 136 127
370 350 350 350 69.2 37.7 53.6
360 341 341 341 68.7 (109.0) 36.6 52.8 50 127 120
350 331 331 331 68.1 35.5 51.9
340 322 322 322 67.6 (108.0) 34.4 51.1 47 118 113
330 313 313 313 67.0 33.3 50.2
320 303 303 303 666.4 (107.0) 32.2 49.4 45 109 106
310 294 294 294 65.8 31.0 48.4
300 284 284 284 65.2 (105.5) 29.8 47.5 42 100
295 280 280 280 64.8 29.2 47.1
290 275 275 275 64.5 (104.5) 28.5 46.5 41 97 96
285 270 270 270 64.2 27.8 46.0
280 265 265 265 63.8 (103.5) 27.1 45.3 40 94
275 261 261 261 63.5 26.4 44.9
270 256 256 256 63.1 (102.0) 25.6 44.3 38 91 88
265 252 252 252 62.7 24.8 43.7
260 247 247 247 62.4 (101.0) 24.0 43.1 37 88
255 243 243 243 62.0 23.1 42.2
250 238 238 238 61.6 99.5 22.2 41.7 36 85 81
245 233 233 233 61.2 21.3 41.1
240 228 228 228 60.7 98.1 20.3 40.3 34 80 78
230 219 219 219 96.7 18.0 33
220 209 209 209 95.0 15.7 32 75 71
210 200 200 200 93.4 13.4 30
200 190 190 190 91.5 11.0 29 68 65
190 181 181 181 89.5 8.5 28
180 171 171 171 87.1 6.3 26 62 59
170 162 162 162 85.0 3.0 25
160 152 152 152 87.1 0.0 24 56 53
150 143 143 143 78.7 22 50 50