Brinell-Hardness Chart

BRINELL HARDNESS NUMBERS : DIAMETER OF BALL, 10 MILLIMETERS

 

Diameter of Ball Impression (mm)

Brinell Hardness Number for a Kilogram Load of:

500 1000 1500 2000 2500 3000
2.00

2.05

2.10

2.15

2.20

158

150

143

136

130

316

300

286

272

260

473

450

428

408

390

632

600

572

544

520

788

750

714

681

650

945

899

856

817

780

2.25

2.30

2.35

2.40

2.45

124

119

114

109

104

248

238

228

218

208

372

356

341

327

313

496

476

456

436

416

621

593

568

545

522

745

712

682

653

627

2.50

2.55

2.60

2.65

2.70

100

96.3

92.6

89.0

85.7

200

193

185

178

171

301

289

278

267

257

400

385

370

356

343

500

482

462

445

429

601

578

555

534

514

2.75

2.80

2.85

2.90

2.95

82.6

79.6

76.8

74.1

71.5

165

159

154

148

143

248

239

230

222

215

330

318

307

296

286

413

398

384

371

358

495

477

461

444

429

3.00

3.05

3.10

3.15

3.20

69.1

66.8

64.6

62.5

60.5

138

134

129

125

121

207

200

194

188

182

276

267

258

250

242

346

334

324

313

303

415

401

388

375

363

3.25

3.30

3.35

3.40

3.45

58.6

56.8

55.1

53.4

51.8

117

114

110

107

104

176

170

165

160

156

234

227

220

214

207

293

284

276

267

259

352

341

331

321

311

3.50

3.55

3.60

3.65

3.70

50.3

48.9

47.5

46.1

44.9

101

97.8

95.0

92.2

89.8

151

147

142

138

135

201

196

190

184

180

252

244

238

231

225

302

293

285

277

269

3.75

3.80

3.85

3.90

3.95

43.6

42.4

41.3

40.2

39.1

87.2

84.8

82.6

80.4

78.2

131

127

124

121

117

174

170

165

161

156

218

212

207

201

196

262

255

248

241

235

4.00

4.05

4.10

4.15

4.20

38.1

37.1

36.2

35.3

34.4

76.2

74.2

72.4

70.6

68.8

114

111

109

106

103

152

148

145

141

138

191

186

181

177

172

229

223

217

212

207

4.25

4.30

4.35

4.40

4.45

33.6

32.8

32.0

31.2

30.5

67.2

65.6

64.0

62.4

61.0

101

98.3

95.9

93.6

91.4

134

131

128

125

122

167

164

160

156

153

201

197

192

187

183

4.50

4.55

4.60

4.65

4.70

29.8

29.1

28.4

27.8

27.1

59.6

58.2

56.8

55.6

54.2

89.3

87.2

85.2

83.3

81.4

119

116

114

111

108

149

145

142

139

136

179

174

170

167

163

4.75

4.80

4.85

4.90

4.95

26.5

25.9

25.4

24.8

24.3

53.0

51.8

50.8

49.6

48.6

79.6

77.8

76.1

74.4

72.8

106

104

102

99.2

97.2

133

130

127

124

122

159

156

152

149

146

5.00

5.05

5.10

5.15

5.20

23.8

23.3

22.8

22.3

21.8

47.6

46.6

45.6

44.6

43.6

71.3

69.8

68.3

66.9

65.5

95.2

93.2

91.2

89.2

87.2

119

117

114

112

109

143

140

137

134

131

5.25

5.30

5.35

5.40

5.45

21.4

20.9

20.5

20.1

19.7

42.8

41.8

41.0

40.2

39.4

64.1

62.8

61.5

60.3

59.1

85.6

83.6

82.0

80.4

78.8

107

105

103

101

98.5

128

126

123

121

118

5.50

5.55

5.60

5.65

5.70

19.3

18.9

18.6

18.2

17.8

38.6

37.8

37.2

36.4

35.6

57.9

56.8

55.7

54.6

53.5

77.2

75.6

74.4

72.8

71.2

96.5

95.0

92.5

90.8

89.2

116

114

111

109

107

5.75

5.80

5.85

5.90

5.95

17.5

17.2

16.8

16.5

16.2

35.0

34.4

33.6

33.0

32.4

52.5

51.5

50.5

49.6

48.7

70.0

68.8

67.2

66.0

64.8

87.5

85.8

84.2

82.5

81.2

105

103

101

99.2

97.3

6.00

6.05

6.10

6.15

6.20

15.9

15.6

15.3

15.1

14.8

31.8

31.2

30.6

30.2

29.6

47.7

46.8

46.0

45.2

44.3

63.6

62.4

61.2

60.4

59.2

79.5

78.0

76.7

75.3

73.8

95.5

93.7

92.0

90.3

88.7

6.25

6.30

6.35

6.40

6.45

14.5

14.2

14.0

13.7

13.5

29.0

28.4

28.0

27.4

27.0

43.5

42.7

42.0

41.2

40.5

58.0

56.8

56.0

54.8

54.0

72.6

71.3

70.0

68.8

67.5

87.1

85.5

84.0

82.5

81.0