N˚

Manufacturer,

Thickness, mm

Brinell hardness, average value

Standard deviation

Coefficient of variation

1

Arcelor-Mittal, 8

141.0

3.46

0.02

2

Arcelor-Mittal, 10

149.9

1.52

0.01

3

Arcelor-Mittal, 8

151.0

8.51

0.06

4

Arcelor-Mittal, 10

149.8

11.45

0.08

5

Amet, 20

173.0

4.64

0.03

6

Amet, 20

167.2

4.82

0.03

7

Severstal, 10

147.4

8.20

0.06