Appendix 3: gas flow comparison chart – Tweco Max 300 w-Merlin 6000GST User Manual
Page 70
APPENDIX
A-24
Manual 0-2642
APPENDIX 3: GAS FLOW COMPARISON CHART
Material
Preflow
Plasma
Secondary Amperage
scfh
lpm
scfh
lpm
scfh
lpm
Notes
Aluminum
Air
Air
50
63
30
190
90
100
83
39
125
59
150
83
39
125
59
225
83
39
125
59
300
110
52
125
59
ArH2
N2
150
80
38
130
61
300
130
61
280
132
N2
H2O
100
83
39
8
8
Sec gph
150
83
39
9
9
Sec gph
225
83
39
8
8
Sec gph
300
110
52
8
8
Sec gph
Mild Steel
Air
Air
50
63
30
85
40
100
83
39
140
66
150
83
39
140
66
225
83
39
140
66
300
130
61
280
132
Air *
Air
100
83
39
300
142
150
83
39
300
142
225
83
39
300
142
300
110
52
300
142
N2
O2
Air
50
42
20
60
28
95
45
100
62
29
83
39
140
66
150
62
29
83
39
140
66
225
62
29
83
39
140
66
300
83
39
110
52
140
66
N2
O2 *
Air
100
62
29
83
39
300
142
150
62
29
83
39
300
142
225
62
29
83
39
300
142
300
83
39
110
52
300
142
Stainless Steel
Air
Air
50
78
37
230
108
100
83
39
140
66
150
83
39
140
66
225
83
39
140
66
300
130
61
280
132
Air *
Air
100
83
39
300
142
150
83
39
300
142
225
83
39
300
142
300
110
52
300
142
ArH2
N2
150
83
39
180
85
300
130
61
280
132
N2
H2O
100
83
39
8
8
Sec gph
150
83
39
3 to 9
3 to 9
Sec gph
225
83
39
7 to 9
7 to 9
Sec gph
300
110
52
8
8
Sec gph
* = Cutting is done wet or underwater (water table)
Gases Used
Flow Used
Gas Flow Comparison Chart
Preflow
Plasma
Secondary