Pores number

Pores density Cells/in2

ores
length

mm

Specific
surface
areas

m2/m3

Opening
holes
ratio

%

5x5

1

26.3

117

77

13x13

5

9.2

278

64

20x20

11

6.4

455

73

25x25

18

4.9

540

67

40x40

46

3.0

825

65

50x50

72

2.3

1005

57