MetFab - Air Products Welder's Handbook - Flipbook - Page 44
Useful data for TIG welding
Typical conditions for TIG welding
with non-pulsed welding machines
Butt welds (PA position)
65- 110
Removable backing
No root gap
Up to 3.2mm
Up to 3.2mm
Metal thickness
(mm)
Electrode diameter
(mm)
Filler rod diameter
(mm)
1-2mm
1.6mm
4.8mm and above
Weld current
(A)
Shielding gas flow
(l/min)
Aluminium – alternating current – zirconiated electrode
1.6
2.4
1.6
60 - 80
6
3.2
3.2
2.4
125 - 145
7
4.8
4.0
3.2
180 - 220
10
6.0
4.8
4.8
235 - 275
12
Stainless steel – direct current – electrode negative – lanthanated electrode
1.6
1.6
1.6
60 - 70
5
3.2
2.4
2.4
70 - 95
6
4.8
2.4
3.2
100 - 120
7
6.0
3.2
4.0
135 - 160
8
Carbon steel – direct current – electrode negative – lanthanated electrode
40
1.6
1.6
1.6
60 - 70
5
3.2
2.4
2.4
75 - 95
6
4.8
2.4
3.2
110 - 130
7
6.0
3.2
4.8
155 - 175
8
