Tungsten Electrode Selection - Linde BOC Smootharc Advance MIG 425R Operating Manual

11.6 Tungsten electrode selection

Thickness
Base metal type range
Copper alloys, All
Cu-NI alloys and
Nickel alloys
Only thick
sections
Mild Steels, All
Carbon Steels,
Alloy Steels,
Stainless Steels
and Titanium
alloys
Only thick
sections
Welding
Desired results current
General purpose DCSP
Increase DCSP
penetration or
travel speed
General purpose DCSP
Increase DCSP
penetration or
travel speed
BOC Smootharc Advance III MIG 225C & 255C Operating manual
Electrode type Shielding gas Tungsten performance characteristics
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% Lanthanated 75% Argon/
(EWG-La2) 25% Helium
2% Ceriated 75% Argon/
(EW-Ce2) 25% Helium
2% Lanthanated Helium
(EWG-La2)
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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