-16-
Table 9 for GTAW (for reference only)
Work piece
thickness
(
mm
)
Tungsten
Diameter
(
mm
)
Wire Diameter
(
mm
)
Welding
Current
(
A
)
Clearance
(mm)
Groove
Condition
0.6
1.0
~
1.6
1.0
20
~
40
1
(1) (2)
1.0
1.0
~
1.6
1.6
30
~
50
1
(1) (2)
1.5
1.0
~
1.6
1.6
50
~
80
1
(2)
2.5
1.6
~
2.4
1.6
~
2.4
70
~
100
1
(2)
3.0
1.6
~
2.4
1.6
~
2.4
100
~
130
1
~
2
(2) (3)
4.0
2.4
1.6
~
2.4
120
~
160
2
~
3
(3) (4)
5.0
2.4
~
3.2
2.4
~
3.2
130
~
200
2
~
3
(3) (4)
6.0
2.4
~
3.2
2.4
~
3.2
150
~
240
3
~
4
(4)
8.0
3.2
~
4.0
3.2
~
4.0
180
~
315
4
~
5
(4)
(3)
(1)
(4)
(2)