100

7

82.5

93.1

83.1

72.9

-

-

61.5

251

201

240

116

730

99

5

81.0

92.8

82.5

71.9

-

-

60.9

246

195

234

112

725

98

-

79.0

92.5

81.8

70.9

-

-

60.2

241

189

228

109

719

97

-

77.5

92.1

81.1

69.9

-

-

59.5

236

184

222

106

713

96

-

76.0

91.8

80.4

68.9

-

-

58.9

231

179

216

103

707

95

-

74.0

91.5

79.8

67.9

-

-

58.3

226

175

210

101

701

94

-

72.5

91.2

79.1

66.9

-

-

57.6

221

171

205

98

696

93

-

71.0

90.8

78.4

65.9

-

-

57.0

216

167

200

96

690

92

-

69.0

90.5

77.8

64.8

-

100

56.4

211

163

195

93

684

91

-

67.5

90.2

77.1

63.8

-

99.5

55.8

206

160

190

91

679

90

-

66.0

89.9

76.4

62.8

-

98.5

55.2

201

157

185

89

674

89

-

64.0

89.5

75.8

61.8

-

98.0

54.6

196

154

180

87

668

88

-

62.5

89.2

75.1

60.8

-

97.0

54.0

192

151

176

85

662

87

-

61.0

88.9

74.4

59.8

-

96.5

53.4

188

148

172

83

656

86

-

59.0

88.6

73.8

58.8

-

95.5

52.8

184

145

169

81

651

85

-

57.5

88.2

73.1

57.8

-

94.5

52.3

180

142

165

80

646

84

-

56.0

87.9

72.4

56.8

-

94.0

51.7

176

140

162

78

640

83

-

54.0

87.6

71.8

55.8

-

93.0

51.1

173

137

159

77

634

82

-

52.5

87.3

71.1

54.8

-

92.0

50.6

170

135

156

75

629

81

-

51.0

86.9

70.4

53.8

-

91.0

50.0

167

133

153

74

624

80

-

49.0

86.6

69.7

52.8

-

90.5

49.5

164

130

150

72

618

79

-

47.5

86.3

69.1

51.8

-

89.5

48.9

161

128

147

612

78

-

46.0

86.0

68.4

50.8

-

88.5

48.4

158

126

144

-

607

77

-

44.0

85.6

67.7

49.8

-

88.0

47.9

155

124

141

-

602

76

-

42.5

85.3

67.1

48.8

-

87.0

47.3

152

122

139

-

596

75

99.6

41.0

85.0

66.4

47.8

-

86.0

46.8

150

120

137

-

592

74

99.1

39.0

84.7

65.7

46.8

-

85.0

46.3

147

118

135

-

587

73

98.5

37.5

84.3

65.1

45.8

-

84.5

45.8

145

116

132

-

581

72

98.0

36.0

84.0

64.4

44.8

-

83.5

45.3

143

114

130

-

576

71

97.4

34.5

83.7

63.7

43.8

100

82.5

44.8

141

112

127

-

571

70

96.8

32.5

83.4

63.1

42.8

99.5

81.5

44.3

139

110

125

-

566

69

96.2

31.0

83.0

62.4

41.8

99.0

81.0

43.8

137

109

123

-

561

68

95.6

29.5

82.7

61.7

40.8

98.0

80.0

43.3

135

107

121

-

556

67

95.1

28.0

82.4

61.0

39.8

97.5

79.0

42.8

133

106

119

-

551

66

94.5

26.5

82.1

60.4

38.7

97.0

78.0

42.3

131

104

117

-

546

65

93.9

25.0

81.8

59.7

37.7

96.0

77.5

41.8

129

102

116

-

542

64

93.4

23.5

81.4

59.0

36.7

95.5

76.5

41.4

127

101

114

-

537

63

92.8

22.0

81.1

58.4

35.7

95.0

75.5

40.9

125

99

112

-

532

62

92.2

20.5

80.8

57.7

34.7

94.5

74.5

40.4

124

98

110

-

527

61

91.7

19.0

80.5

57.0

33.7

93.5

74.0

40.0

122

96

108

-

522

60

91.1

17.5

80.1

56.4

32.7

93.0

73.0

39.5

120

95

107

-

517

59

90.5

16.0

79.8

56.7

31.7

92.5

72.0

39.0

118

94

106

-

512

58

90.0

14.5

79.5

55.0

30.7

92.0

71.0

38.6

117

92

104

-

507

57

89.4

13.0

79.2

54.4

29.7

91.0

70.5

38.1

115

91

103

-

502

56

88.8

11.5

78.8

53.7

28.7

90.5

69.5

37.7

114

90

101

-

497

55

88.2

10.0

78.5

53.0

27.7

90.0

68.5

37.2

112

89

100

-

492

54

87.7

8.5

78.2

52.4

26.7

89.5

68.0

36.8

111

87

-

-

487

53

87.1

7.0

77.9

51.7

25.7

89.0

67.0

36.3

110

86

-

-

482

52

86.5

5.5

77.5

51.0

24.7

88.0

66.0

35.9

109

85

-

-

477

51

86.0

4.0

77.2

50.3

23.7

87.5

65.0

35.5

108

84

-

-

472

50

85.4

2.5

76.9

49.7

22.7

87.0

64.5

35.0

107

83

-

-

468

Although conversion tables dealing with hardness can only be approximate and never mathematically exact, it is of considerable value to be able to compare different hardness scales. This table is based on the assumption that the metal tested is homogeneous to a depth several times as great as the depth of the indentation.