W
t
C
a1
b1
a2
b2
e1/e2
f1/f2

W

 

=width or diameter of the holes
=centre distance of the holes
=bridge
=width of the panel
=length of the panel
=width of the perforated zone
=length of the perforated zone
=non perforated zone in longitudinal direction
=non perforated zone in transverse direction

=0,866 x t

DIN/EN/ISO 24043

width x length of the hole

centre distance

free area

material thickness

W x L

t1

t2

Ao%

0,5

0,75

1,0

1,5

2,0

2,5

3,0

4,0

5,0

6,0

1,0 x 10,0

3,0

15,0

21,5

s

s

s 

2,0 x 12,5

4,5

16,0

33,5

s

s

2,0 x 20,0

6,25

28,0

22,5

s

s

2,0 x 20,0

5,0

25,0

31,5

s

s

2,5 x 20,0

5,0

25,0

39,0

s

s

s

2,5 x 20,0

6,25

26,0

30,0

s

s

s

s

4,0 x 20,0

10,0

28,0

27,5

s

s

s

s

s

s

s

s

5,0 x 20,0

10,25

25,0

37,0

s

s

s

5,0 x 20,0

9,5

27,0

37,0

s

s

s

s

s

6,0 x 25,0

12,0

32,0

37,0

s

s

s

s

6,0 x 25,0

12,5

36,0

31,5

s

s

s

s

8,0 x 25,0

13,0

32,0

45,0

s

s

s

8,0 x 40,0

16,0

50,0

38,5

s

s

s

s

s

s

s

s

10,0 x 50,0

18,0

63,0

42,0

s

s

s

s

12,0 x 50,0

21,0

66,0

41,0

s

s

s