in mm a a/cm2 a a/cm2 a a/cm2
12 300 13000-17400 17-24 13000-
17500 18-25 15000-
21000 21-29
14 350 17400-24000 17-24 17500-
24500 18-25 20000-
28000 21-29
16 400 21000-31000 16-24 21500-
32000 17-25 24000-
35000 19-28
18 450 25000-40000 15-24 26000-
40500 16-25 29000-
45000 18-28
20 500 30000-48000 15-24 32000-
50000 16-25 34000-
54000 17-27
22 550 35000-55000 14-22 37000-
57000 15-23 40000-
62000 16-25