Tweco 161 S UK - Manual (Page 29)

OPERATION THERMAL ARC 161 S
Manual 0-5183 4-5 4-5 Operation
4.10 TIG Welding Parameters for Steel
Base Metal
Thickness
DC Current
Electrode
Diameter
Filler Rod
Diameter
Argon Gas Flow
Rate Joint / Type
Mild Steel Stainless
Steel
1.0mm
(.040")
35-45 20-30
1.0mm
(.040")
1.6mm
(1/16")
5 LPM
Butt/Corner
40-50 25-35 Lap/Filler
1.2mm
(.045")
45-55 30-45
1.0mm
(.040")
1.6mm
(1/16")
6 LPM
Butt/Corner
50-60 35-50 Lap/Filler
1.6mm
(1/16")
60-70 40-60
1.6mm
(1/16")
1.6mm
(1/16")
7 LPM
Butt/Corner
70-90 50-70 Lap/Filler
3.2mm
(1/8")
80-100 65-85
1.6mm (1/16") 2.4mm ( 3/32") 7 LPM
Butt/Corner
90-115 90-110 Lap/Filler
4.8mm
(3/16")
115-135 100-125
2.4mm (3/32") 3.2mm (1/8") 10 LPM
Butt/Corner
140-165 125-150 Lap/Filler
6.4mm
(1/4")
160-175 135-160
3.2mm (1/8") 4.0mm (5/32") 10 LPM
Butt/Corner
170-200 160-180 Lap/Filler
4.11 Arc Welding Practice
The techniques used for arc welding are almost identical regardless of what types of metals are being joined.
Naturally enough, different types of electrodes would be used for different metals as described in the preceding
section.