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NOTES
26
Welding current
range/A
DC positive connection
AC
Gas nozzle
diameter/mm
Gas flow
rate/L·min
-1
Gas nozzle
diameter/mm
Gas flow
rate/L·min
-1
10 100
4 9.5
4 5
8 9.5
6 8
101 150
4 9.5
4 7
9.5 11
7 10
151 200
6 13
6 8
11 13
7 10
201 300
8 13
8 9
13 16
8 15
Notice: the above parameters originate from Welding Dictionary P149, Volume 1 of Edition 2.
tungsten electrode
diameter /mm
sharpened of the
electrode
diameter/mm
angle of cone
（
°
）
background current/A
1.0
0.125
12
2 15
1.0
0.25
20
5 30
1.6
0.5
25
8 50
1.6
0.8
30
10 70
2.4
0.8
35
12 90
2.4
1.1
45
15 150
3.2
1.1
60
20 200
TIG of stainless steel (single run welding)
Workpiece
thickness
/mm
Joint form
tungsten
electrode
diameter/mm
welding wire
diameter/mm
Argon
gas flow
rate/
L·min
-1
welding
current
(DCEP)
Welding
speed/
cm·min
-1
0.8
Butt joint
1.0
1.6
5
20 50
66
1.0
Butt joint
1.6
1.6
5
50 80
56
1.5
Butt joint
1.6
1.6
7
65 105
30
1.5
Corner
joint
1.6
1.6
7
75 125
25
2.4
Butt joint
1.6
2.4
7
85 125
30
2.4
Corner
joint
1.6
2.4
7
95 135
25
3.2
Butt joint
1.6
2.4
7
100 135
30
3.2
Corner
1.6
2.4
7
115 145
25
