Welding Parameters For Steel - Thermal Arc ARCMASTER 300 MST Operating Manual

5.07 Welding Parameters for Steel

Base Metal DC Current for
Thickness Mild Steel
35-45
0.040"
40-50
1.0mm
45-55
0.045"
50-60
1.2mm
60-70
1/16"
70-90
1.6mm
80-100
1/8"
90-115
3.2mm
115-135
3/16"
140-165
4.8mm
160-175
¼"
170-200
6.4mm
DC Current for Tungsten
Stainless Electrode
Steel Diameter
20-30
0.040"
25-35
1.0mm
30-45
0.040"
35-50
1.0mm
40-60
1/16"
50-70
1.6mm
65-85
1/16"
90-110
1.6mm
100-125
3/32"
125-150
2.4mm
135-160
1/8"
160-180
3.2mm
Table 12 – DC TIG Welding Parameters
32
Filler Rod Argon Gas
Diameter Flow Rate
(if required) Liters/min
1/16" 5-7
1.6mm
1/16" 5-7
1.6mm
1/16" 7
1.6mm
3/32" 7
2.4mm
1/8" 10
3.2mm
5/32" 10
4.0mm
Joint Type
Butt/Corner
Lap/ Fillet
Butt/Corner
Lap/ Fillet
Butt/Corner
Lap/ Fillet
Butt/Corner
Lap/ Fillet
Butt/Corner
Lap/ Fillet
Butt/Corner
Lap/ Fillet