Specimen

Hardness H (GPa)

Elastic modulus E (GPa)

H/E

DLC-1

12.94

107.57

0.12

DLC-2

32.11

240.17

0.13

DLC-3

28.87

223.82

0.13

DLC-4

20.03

147.77

0.14

DLC-5

21.35

156.84

0.13

DLC-6

14.53

132.37

0.11

DLC-7

22.57

156.82

0.14

DLC-8

53.63

420.68

0.13