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Hardness Conversion Table

Tensile

Strength

(N/mm2)

Brinell Hardness

(BHN)

Vickers Hardness

(HV)

Rockwell

Hardness

(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

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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Q: How to convert BHN to HRC for material?
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