Tungsten Electrodes
HTP recommends the following premium quality tungsten
ground to a high quality finish for use with your Invertig
130DC/HF. All Tungsten is 7" long and can be purchased
individually.
2% Thoriated Tungsten (TT2) – red tip – This tungsten is the
most common tungsten currently used. Generally used for DC
welding of steel and stainless steel. Draw back is it has a low
level radiation hazard. Offers good overall performance.
2% Ceriated Tungsten (TC2) – grey tip – 2% Ceriated is an
excellent substitute for 2% thoriated tungsten and works
excellent with inverter power sources such as your 130DC/HF.
More popular for thinner materials because it requires less
amperage to start. Offers a stable arc.
2% Lanthanated Tungsten (TL2) – blue tip – 2% lanthanated is
also an excellent substitute for 2% thoriated tungsten. It offers
good arc starting characteristics and longer life than 2%
thoriated.
Tungsten Type
Diameter
.040" 1/16"
3/32"
1/8"
(1.0mm)
(1.6mm)
(2.4mm)
(3.2mm)
2% Thoriated
TT2-7040
TT2-7116
TT2-7332
TT2-718
2% Ceriated
TC2-7040
TC2-7116
TC2-7332
TC2-718
2% Lanthanated
TL2-7040
TL2-7116
TL2-7332
TL2-718
Amperage 15-50
50-120
80-150
130-250
The electrode should be sharpened to a point with a fine
grinding wheel. If the stone used for sharpening the electrode
is not clean, contaminants could lodge in the electrode and
dislodge when welding. The grinding wheel used for tungsten
electrodes should not be used for any other materials. When
grinding the electrode to a point, a 15 to 30 degree angle is
desired. The grinding marks should run lengthwise with the
point, opposed to in the direction of the diameter.
The HTP Tungsten Sharpener is an excellent tool for precisely
sharpening tungsten electrodes without any fear of
contamination.
General Welding Parameters
Following are some “rule of thumb” welding parameters,
tungsten diameters and amperage settings for welding different
thicknesses of steel. Keep in mind these are general settings
and the specific application may require more or less power to
get the job done.
Mild Steel
Tungsten
Machine
Welding
Filler
Thickness
Diameter
Amperage
Amperage
Diameter
.030"
.040"
50
30-40
.035"
.050"
1/16"
70
45-55
.035"
.062" (1/16")
1/16"
80
55-65
1/16"
.093" (3/32")
1/16"
110
80-90
1/16"
.125" (1/8")
1/16"-3/32"
130
110-120
1/16"
.187" (3/16")*
3/32"
130
130
1/16"
* May require beveling – depends on joint
Filler Rod for TIG Welding
HTP offers you high quality filler rods in affordable quantities.
All filler rod is packaged in 1lb airtight plastic tubes to keep
your filler rod fresh and contaminant free. The tubes are
completely re-sealable.
In TIG welding, the filler rod is fed into the molten puddle by
hand. The choice of filler rod is extremely important as the rod
must correctly match the material and alloy you will be welding.
The thickness of the material to be welded determines the
diameter of the filler rod.
Fig 5 –
Tungsten Electrodes
Fig 6 –
HTP Tungsten Sharpener
Fig 7 –
Tig Filler Rod
