Processing time (min.)

Working gas

N₂

Ar

Air

O₂

5

6.47

5.91

3.75

4.35

10

6.42

4.66

3.55

4.40

20

6.36

4.15

3.29

4.51

30

6.28

4.61

3.18

5.05

60

5.99

4.05

2.87

6.04