202 AC/DC INVERTER BASIC WELDING
BASIC WELDING GUIDE
4-12
Manual 0-5239
Guide for Selecting Filler Wire Diameter
Filler Wire Diameter DC Current Range (Amps)
1/16” (1.6mm)
20-90
3/32” (2.4mm)
65-115
1/8” (3.2mm)
100-165
3/16” (4.8mm)
200-350
Table 4-4: Filler Wire Selection Guide
Tungsten Electrode Types
Electrode Type
(Ground Finish)
Welding Application
Features
Colour Code
Thoriated 2%
DC welding of mild
steel, stainless steel
and copper
Excellent arc starting,
Long life, High current
carrying capacity
Red
Zirconated 1%
High quality AC weld-
ing of aluminium,
magnesium and their
alloys.
Self cleaning, Long
life, Maintains balled
end, High current car-
rying capacity.
White
Ceriated 2%
AC & DC welding of
mild steel, stainless
steel, copper, alumin-
ium, magnesium and
their alloys
Longer life, More
stable arc, Easier
starting, Wider current
range, Narrower more
concentrated arc.
Grey
Table 4-5 Tungsten Electrode Types
Base Metal
Thickness
AC Current for
Aluminium
Tungsten
Electrode
Diameter
Filler Rod Diameter
(if required)
Argon Gas
Flow Rate
JOINT
TYPE
1/16”
1.6 mm
60-80
70-90
1/16”
1.6 mm
1/16”
1.6 mm
15 CFM
7LPM
Butt/Corner
Lap/Fillet
1/8”
3.2 mm
125-145
140-160
3/32”
2.4 mm
1/16”-3/32”
1.6mm-2.4mm
17CFM
8LPM
Butt/Corner
Lap/Fillet
Table 4-6 Aluminium Welding Material
