Tungsten Electrode Selection - Linde BOC RAPTOR Operating Manual

9.6 Tungsten electrode selection

Base metal Thickness
type range
Copper All
alloys, Cu-NI
alloys and
Nickel alloys
Only thick
sections
Mild Steels, All
Carbon Steels,
Alloy Steels,
Stainless
Steels and
Titanium alloys
Only thick
sections
Desired Welding
results current
General DCSP
purpose
Increase DCSP
penetration
or travel
speed
General DCSP
purpose
Increase DCSP
penetration
or travel
speed
Electrode Shielding
type gas
2% Thoriated 75% Argon/
(EW-Th2) 25% Helium
2% Ceriated 75% Argon/
(EW-Ce2) 25% Helium
2% Ceriated 75% Argon/
(EW-Ce2) 25% Helium
2% Thoriated 75% Argon/
(EW-Th2) 25% Helium
2% Ceriated 75% Argon/
(EW-Ce2) 25% Helium
2% 75% Argon/
Lanthanated 25% Helium
(EWG-La2)
2% Ceriated 75% Argon/
(EW-Ce2) 25% Helium
2% Helium
Lanthanated
(EWG-La2)
Tungsten performance
characteristics
Best stability at medium
currents. Good arc starts
Medium tendency to spit
Medium erosion rate
Low erosion rate. Wide
current range. AC or DC. No
spitting. Consistent arc starts
Good stability
Low erosion rate. Wide
current range. AC or DC. No
spitting. Consistent arc starts
Good stability
Best stability at medium
currents. Good arc starts
Medium tendency to spit
Medium erosion rate
Low erosion rate. Wide
current range. AC or DC. No
spitting Consistent arc starts
Good stability
Lowest erosion rate. Widest
current range on DC. No
spitting. Best DC arc starts
and stability
Low erosion rate. Wide
current range. No spitting.
Consistent arc starts. Good
stability
Lowest erosion rate. Highest
current range. No spitting.
Best DC arc starts and
stability
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