Hardness Conversion Chart

Brinell Hardness

Rockwell Hardness

Tensile Strength

Tungsten Carbide Ball 3000 KG

A Scale 60KG

B Scale 100KG

C Scale 150KG

(Approx.)

-

85.6

-

68.0

-

-

85.3

-

67.5

-

-

85.0

-

67.0

-

767

84.7

-

66.4

-

757

84.4

-

65.9

-

745

84.1

-

65.3

-

733

83.8

-

64.7

-

722

83.4

-

64.0

-

712

-

-

-

-

710

83.0

-

63.3

-

698

82.6

-

62.5

-

684

82.2

-

61.8

-

682

82.2

-

61.7

-

670

81.8

-

61.0

-

656

81.3

-

60.1

-

653

81.2

-

60.0

-

647

81.1

-

59.7

-

638

80.8

-

59.2

329,000

630

80.6

-

58.8

324,000

627

80.5

-

58.7

323,000

601

79.8

-

57.3

309,000

578

79.1

-

56.0

297,000

555

78.4

-

54.7

285,000

534

77.8

-

53.5

274,000

514

76.9

-

52.1

263,000

495

76.3

-

51.0

253,000

477

75.6

-

49.6

243,000

461

74.9

-

48.5

235,000

444

74.2

-

47.1

225,000

429

73.4

-

45.7

217,000

415

72.8

-

44.5

210,000

401

72.0

-

43.1

202,000

388

71.4

-

41.8

195,000

375

70.6

-

40.4

188,000

363

70.0

-

39.1

182,000

352

69.3

-

37.9

176,000

341

68.7

-

36.6

170,000

Brinell Hardness

Rockwell Hardness

Tensile Strength

Tungsten Carbide Ball 3000 KG

A Scale 60KG

B Scale 100KG

C Scale 150KG

(Approx.)

331

68.1

-

35.5

166,000

321

67.5

-

34.3

160,000

311

66.9

-

33.1

155,000

302

66.3

-

32.1

150,000

293

65.7

-

30.9

145,000

285

65.3

-

29.9

141,000

277

64.6

-

28.8

137,000

269

64.1

-

27.6

133,000

262

63.6

-

26.6

129,000

255

63.0

-

25.4

126,000

248

62.5

-

24.2

122,000

241

61.8

100.0

22.8

118,000

235

61.4

99.0

21.7

115,000

229

60.8

98.2

20.5

111,000

223

-

97.3

20.0

-

217

-

96.4

18.0

105,000

212

-

95.5

17.0

102,000

207

-

94.6

16.0

100,000

201

-

93.8

15.0

98,000

197

-

92.8

-

95,000

192

-

91.9

-

93,000

187

-

90.7

-

90,000

183

-

90.0

-

89,000

179

-

89.0

-

87,000

174

-

87.8

-

85,000

170

-

86.8

-

83,000

167

-

86.0

-

81,000

163

-

85.0

-

79,000

156

-

82.9

-

76,000

149

-

80.8

-

73,000

143

-

78.7

-

71,000

137

-

76.4

-

67,000

131

-

74.0

-

65,000

126

-

72.0

-

63,000

121

-

69.8

-

60,000

116

-

67.6

-

58,000

111

-

65.7

-

56,000

Steven L Henderson's Cutting Edge Designs