Samples

r/μm

r₅₀/μm

S_p

S_k

K_g

P_d/MPa

P₅₀/MPa

W_E/%

No. 4 vitrain

3.18

0.01

4.98

1.42

−

0.03

93.03

63.88

No. 4 durain

4.83

0.02

3.39

−1.37

−

0.02

44.42

36.56

Upper No. 4 durain

4.90

0.05

−

−1.03

4.66

0.02

14.34

42.45