Regarding TIG welding
Tungsten electrode working current range (DC positive connection)
Electrode
Diameter
mm
Current (A)
Electrode
Diameter
mm
Current (A)
Pure
tungsten
thoriated
tungsten
Pure
tungsten
thoriated
tungsten
0.5
2-20
2-20
3.2
160-310
225-330
1.0
10-75
10-75
4.0
275-450
350-480
1.6
40-130
60-150
5.0
400-625
500-675
2.0
75-180
100-200
6.3
550-675
650-950
2.5
130-230
160-250
TIG parameter recommend value
tungsten electrode
diameter
mm
Metal
thickness
mm
Weld
current A
MAX argon flow
L/min
1-2
1-3
< 50
4
50-80
6
2-4
3-6
81-120
7
121-160
8
161-200
9
201-300
10
4-6
6-9
301-400
12
>400
14
note:
power output, voltage is U2=10+0.04 I2
U2 is load voltage
I2 is weld current
