Steel hrc chart

Brinell hardness(HB)
10mm 3000kgf

Vickers hardness
(HV)

Rockwell hardness (HR)

Shore hardness
(HS)

Tensile strength
MPa(2)

Standard ball

 Tungsten
carbide ball

A scale(HRA)
Load:60kgf
Dlamond conical
penetrator

B scale(HRB)
Load:100kgf
Ball of 1.6mm
(1/16")dia

 A scale(HRA)
Load:100kgf
Dlamond conical
penetrator

 A scale(HRA)
Load:150kgf
Dlamond conical
penetrator

-

-

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

73

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

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

(110.0)

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