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Tungsten Electrode Types
Electrode Type
(Ground Finish)
Ceriated 2%
TIG Welding Filler Rods
Comweld
Aust Std
Rod
LW1
R4
LW1-6
R6
Supersteel
R2
CrMo1
RB2
ER80S-B2
CrMo2
RB3
ER90S-B3
308L
R308L
309L
R309L
316L
R316L
Base Metal
DC Current
Thickness
for Mild
Steel
0.040"
35-45
1.0mm
40-50
0.045"
45-55
1.2mm
50-60
1/16"
60-70
1.6mm
70-90
1/8"
80-100
3.2mm
90-115
3/16"
115-135
4.8mm
140-165
1/4"
160-175
6.4mm
170-200
TIG Welding is generally regarded as a specialised process that requires operator competency. While many of
the principles outlined in the previous Arc Welding section are applicable a comprehensive outline of the TIG
Welding process is outside the scope of this Operating Manual. For further information please refer to www.
cigweld.com.au or contact Cigweld.
TIG (GTAW) Welding
Welding Application
AC & DC welding of mild
steel, stainless steel, copper,
aluminium, magnesium and their
alloys
Table 5-5
AWS Std
Part No.
Part No.
1.6mm
2.4mm
ER70S-4
321411
ER70S-6
321417
ER70S-2
321370
—
321379
—
321383
ER308L
321406
321407
ER309L
321403
321404
ER316L
321400
321401
Table 5-6
DC Current
Tungsten
for Stainless
Electrode
Steel
Diameter
20-30
0.040"
25-35
1.0mm
30-45
0.040"
35-50
1.0mm
40-60
1/16"
50-70
1.6mm
65-85
1/16"
90-110
1.6mm
100-125
3/32"
125-150
2.4mm
135-160
1/8"
160-180
3.2mm
Table 5-7
Features
Longer life, More stable
arc, Easier starting, Wider
current range, Narrower more
concentrated arc.
Part No.
3.2mm
—
—
For mild-medium strength steels.
—
—
Pipes, tubing, roll cages, etc.
—
—
—
For welding of high strength
—
Cr-Mo steels used at elevated
temperatures.
—
For stainless steels. Stainless pipes,
—
tubing, architectural uses, etc.
—
Filler Rod
Diameter (if
required)
1/16"
1.6mm
1/16"
1.6mm
1/16"
1.6mm
3/32"
2.4mm
1/8"
3.2mm
5/32"
4.0mm
5-10
Colour Code
Grey
Type/Application
Argon Gas
Joint Type
Flow Rate
Litres/min
5-7
Butt/Corner
Lap/Fillet
5-7
Butt/Corner
Lap/Fillet
7
Butt/Corner
Lap/Fillet
7
Butt/Corner
Lap/Fillet
10
Butt/Corner
Lap/Fillet
10
Butt/Corner
Lap/Fillet
0-5555
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