MetFab - Air Products Welder's Handbook - Flipbook - Page 45
Typical conditions for TIG welding
with non-pulsed welding machines
Fillet welds (PB position)
Ensure surface along joint line
is free of oxides and grease
Metal thickness
(mm)
Electrode diameter
(mm)
Up to 3.2mm - no gap
Over 4.8mm - 0.8mm gap
Filler rod diameter
(mm
Weld current
(A)
Weld process gas flow
(l/min)
Aluminium – alternating current – zirconiated electrode
1.6
2.4
1.6
60 - 80
5
3.2
3.2
2.4
125 - 145
6
4.8
3.2 or 4.0
3.2
195 - 230
7
6.0
4.0 or 4.8
4.8
260 - 295
10
Stainless steel – direct current – electrode negative – lanthanated electrode
1.6
1.6
1.6
50 - 70
5
3.2
2.4
2.4
85 - 105
5
4.8
2.4
3.2
120 - 145
6
6.0
3.2
4.0
165 - 180
7
Carbon steel – direct current – electrode negative – lanthanated electrode
1.6
1.6
1.6
50 - 70
5
3.2
2.4
2.4
90 - 120
5
4.8
2.4
3.2
135 - 175
6
6.0
3.2
4.8
170 - 200
7
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