Non Consumable Tungstens - Linde BOC Smootharc TIG200 DC Operating Manual

12 BOC Smootharc TIG 200 DC Operating Manual
2.6

Non consumable tungstens

Tungsten Electrode Selector Chart
Thickness range Desired results
Copper alloys, Cu-NI alloys and Nickel alloys
All General purpose DCSP
Only thin sections Control
penetration
Only thick sections Increase
penetration or
travel speed
Mild Steels, Carbon Steels, Alloy Steels, Stainless Steels and Titanium alloys
All General purpose DCSP
Only thin sections Control
penetration
Only thick sections Increase
penetration or
travel speed
Welding
current Electrode type Shielding gas
2% Thoriated 75% Argon/
(EW-Th2)
25% Helium
2% Ceriated 75% Argon/
(EW-Ce2)
25% Helium
ACHF Zirconiated Argon
(EW-Zr)
DCSP 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
ACHF Zirconiated Argon
(EW-Zr)
DCSP 2% Ceriated 75% Argon/
(EW-Ce2)
25% Helium
2% Lanthanated Helium
(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.
Use on lower currents only. Spitting on starts. Rapid erosion rates at
higher currents.
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.
Use on lower current only. Spitting on starts. Rapid erosion rates at
higher currents.
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.