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COMPANYKNOWLEDGEPRODUCTSSERVICECONTACTCOURSES & EVENTSE-GATEE-SHOPSEARCH
Hardness Conversion Table
 

Vickers
Hardness

Brinell Hardness
10 mm tungsten carbide ball


Rockwell Hardness

 

-

Load 3000 kg

B scale
100 kg load

C scale
150 kg load

D scale
100 kg load

940

-

-

68.0

76.9

920

-

-

67.5

76.5

900

-

-

67.0

76.1

880

(767)

-

66.4

75.7

860

(757)

-

65.9

75.3

840

(745)

-

65.3

74.8

820

(733)

-

64.7

74.3

800

(722)

-

64.0

73.8

780

(710)

-

63.3

73.3

760

(698)

-

62.5

72.6

740

(684)

-

61.8

72.1

720

(670)

-

61.0

71.5

700

(656)

-

60.1

70.8

690

(647)

-

59.7

70.5

680

(638)

-

59.2

70.1

670

(630)

-

58.8

69.8

660

620

-

58.3

69.4

650

611

-

57.8

69.0

640

601

-

57.3

68.7

630

591

-

56.8

68.3

620

582

-

56.3

67.9

610

573

-

55.7

67.5

600

564

-

55.2

67.0

590

554

-

54.7

66.7

580

545

-

54.1

66.2

570

535

-

53.6

65.8

560

525

-

53.0

65.4

550

517

-

52.3

64.8

540

507

-

51.7

64.4

530

497

-

51.1

63.9

520

488

-

50.5

63.5

510

479

-

49.8

62.9

500

471

-

49.1

62.2

490

460

-

48.4

61.6

480

452

-

47.7

61.3

470

442

-

46.9

60.7

460

433

-

46.1

60.1

450

425

-

45.3

59.4

440

415

-

44.5

58.8

430

405

-

43.6

58.2

420

397

-

42.7

57.5

410

388

-

41.8

56.8

400

379

-

40.8

56.0

390

369

-

39.8

55.2

380

360

(110.0)

38.8

54.4

370

350

-

37.7

53.6

360

341

(109.0)

36.6

52.8

350

331

-

35.5

51.9

340

322

(108.0)

34.4

51.1

330

313

-

33.3

50.2

320

303

(107.0)

32.2

49.4

310

294

-

31.0

48.4

300

284

(105.0)

29.8

47.5

295

280

-

29.2

47.1

290

275

(104.5)

28.5

46.5

285

270

-

27.8

46.0

280

265

(103.5)

27.1

45.3

275

261

-

26.4

44.9

270

256

(102.0)

25.6

44.3

265

252

-

24.8

43.7

260

247

(101.0)

24.0

43.1

255

243

-

23.1

42.2

250

238

99.5

22.2

41.7

245

233

-

21.3

41.1

240

228

98.1

20.3

40.3

230

219

96.7

(18.0)

-

220

209

95.0

(15.7)

-

210

200

93.4

(13.4)

-

200

190

91.5

(11.0)

-

190

181

89.5

(8.5)

-

180

171

87.1

(6.0)

-

170

162

85.0

(3.0)

-

160

152

81.7

(0.0)

-

150

143

78.7

-

-

140

133

75.0

-

-

130

124

71.2

-

-

120

114

66.7

-

-

110

105

62.3

-

-

100

95

56.2

-

-

95

90

52.0

-

-

90

86

48.0

-

-

85

81

41.0

-

-

 


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