Sides

Test samples

Indentation diameter

Average

d

Measured

HB

d₁

d₂

Inner surface

1

1.13

1.125

1.127

177

2

1.13

1.13

1.13

176

3

1.14

1.13

1.135

178

4

1.19

1.19

1.19

158

5

1.10

1.10

1.10

187

6

1.21

1.21

1.21

153

Outer surface

1

1.13

1.134

1.132

175

2

1.133

1.13

1.132

175

3

1.13

1.13

1.13

176

4

1.18

1.175

1.178

161

5

1.11

1.12

1.115

184

6

1.13

1.13

1.13

176