Specifications

22
b) Non consumable Tungstens
Tungsten Electrode Selector Chart
Base metal type Thickness range Desired results Welding
current
Electrode type Shielding
gas
Tungsten performance characteristics
Copper alloys,
Cu-NI alloys and
Nickel alloys
All General purpose DCSP 2%Thoriated(EW-Th2) 75%Argon/
25%Helium
Best stability at medium currents. Good arc starts. Medium tendency to spit.
Medium erosion rate.
2%Ceriated(EW-Ce2) 75%Argon/
25%Helium
Low erosion rate. Wide current range. AC or DC. No spitting. Consistent arc starts.
Good stability.
Only thin sections Control penetration ACHF Zirconiated (EW-Zr) Argon Use on lower currents only. Spitting on starts. Rapid erosion rates at higher currents.
Only thick sections Increase penetration
or travel speed
DCSP 2%Ceriated(EW-Ce2) 75%Argon/
25%Helium
Low erosion rate. Wide current range. AC or DC. No spitting. Consistent arc starts.
Good stability.
Mild Steels, Carbon
Steels, Alloy Steels,
Stainless Steels and
Titanium alloys
All General purpose DCSP 2%Thoriated(EW-Th2) 75%Argon/
25%Helium
Best stability at medium currents. Good arc starts. Medium tendency to spit.
Medium erosion rate.
2%Ceriated(EW-Ce2) 75%Argon/
25%Helium
Low erosion rate. Wide current range. AC or DC. No spitting. Consistent arc starts.
Good stability.
2%Lanthanated(EWG-La2) 75%Argon/
25%Helium
Lowest erosion rate. Widest current range on DC. No spitting. Best DC arc starts and stability.
Only thin sections Control penetration ACHF Zirconiated (EW-Zr) Argon Use on lower current only. Spitting on starts. Rapid erosion rates at higher currents.
Only thick sections Increase penetration
or travel speed
DCSP 2%Ceriated(EW-Ce2) 75%Argon/
25%Helium
Low erosion rate. Wide current range. No spitting. Consistent arc starts. Good stability.
2%Lanthanated(EWG-La2) Helium Lowest erosion rate. Highest current range. No spitting. Best DC arc starts and stability.