|
|
|
There
is not anyway to tell a welder which tungsten is best for his
application. Welders use different power supplies with different
types of arc starters. Each welding application uses different
gases and electrode tip configurations. Also, the material
being welded will vary.
Other factors such as weld speed, pulsing, number of arc starts
and how the tungsten is sharpened will affect tungsten life.
It is recommended that you test the tungsten before putting
it into production.
Ask us for a free sample tungsten electrode to conduct your
own test.
All tungsten electrodes packaged in boxes
of 10 pieces in 7" lengths.
For special diameters & lengths contact sales: 615-793-7020
for price and delivery. |
Tungsten
Electrode – Typical
Current Ranges Table
|
Tungsten
electrodes are classified on the basis of their chemical
compositions:
|
E
|
stands
for electrode, which is used for one terminal of the arc
welding circuit |
W
|
stands
for the chemical symbol of tungsten |
The
final letters indicate the alloying element (oxide additions):
|
P
|
designates
a pure tungsten electrode without alloying elements |
| Zr |
is for zirconiated |
| Th |
is for thoriated |
| Ce |
is for ceriated |
| La |
is for lanthanated |
The
numbers specify the nominal alloying composition (in
weight-percent).
Thus, EWTh-2 is a thoriated tungsten electrode containing nominally 2
wt-% thoria.
|
|
Approximate
Current Ranges for Tungsten Electrodes for
GTAW
|
|
|
Straight
|
Reverse
|
|
|
|
|
Electrode
Diameter
(inches)
|
Polarity
Direct
Current
Amps
|
Polarity
Direct
Current
Amps
|
Unbalanced
Wave
AC
|
Unbalanced
Wave
AC
|
Balanced
Wave
AC
|
Balanced
Wave
AC
|
|
|
|
|
EWP
|
EWP
|
EWP
|
EWCe-2
|
EWP
|
EWCe-2
|
|
|
EWCe-2
|
EWCe-2
|
|
EWLa-1
|
|
EWLa-1
|
|
|
EWLa-1
|
EWLa-1
|
|
EWTh-1
|
|
EWTh-1
|
|
|
EWTh-1
|
EWTh-1
|
|
EWTh-2
|
|
EWTh-2
|
|
|
EWTh-2
|
EWTh-2
|
|
EWZr-1
|
|
EWZr-1
|
|
|
0.010
|
Up to 15
|
N/A
|
Up to 15
|
Up to 15
|
Up to 15
|
Up to 15
|
0.020
|
5-20
|
N/A
|
5-15
|
5-20
|
10-20
|
5-20
|
0.040
|
15-80
|
N/A
|
10-60
|
15-80
|
20-30
|
20-60
|
0.060
|
70-150
|
10-20
|
50-100
|
70-150
|
30-80
|
60-120
|
0.093
|
150-250
|
15-30
|
100-160
|
140-235
|
60-130
|
100-180
|
0.125
|
250-400
|
25-40
|
150-210
|
225-325
|
100-180
|
160-250
|
0.156
|
400-500
|
40-55
|
200-275
|
300-400
|
160-240
|
200-320
|
0.187
|
500-750
|
55-80
|
250-350
|
400-500
|
190-300
|
290-390
|
0.250
|
750-1000
|
80-125
|
325-450
|
500-630
|
250-400
|
340-325
|
|
|
Process
Welding Systems, Inc. • 72 Buchanan
St • LaVergne, TN 37086 • Ph:
615-793-7020 • Fx:
615-793-7557
|
|
