Tweco 200 ACDC Arcmaster(Feb2006) - Manual (Page 42)

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7.09 Welding Parameters for Steel
Base Metal
Thickness
DC Current
for Mild Steel
DC Current for
Stainless
Steel
Tungsten
Electrode
Diameter
Filler Rod
Diameter
(if required)
Argon Gas
Flow Rate
Liters/min
Joint Type
35-45 20-30 Butt/Corner 0.040”
1.0mm
40-50 25-35
0.040”
1.0mm
1/16”
1.6mm
5-7
Lap/ Fillet
45-55 30-45 Butt/Corner 0.045”
1.2mm
50-60 35-50
0.040”
1.0mm
1/16”
1.6mm
5-7
Lap/ Fillet
60-70 40-60 Butt/Corner 1/16”
1.6mm
70-90 50-70
1/16”
1.6mm
1/16”
1.6mm
7
Lap/ Fillet
80-100 65-85 Butt/Corner 1/8”
3.2mm
90-115 90-110
1/16”
1.6mm
3/32”
2.4mm
7
Lap/ Fillet
115-135 100-125 Butt/Corner 3/16”
4.8mm
140-165 125-150
3/32”
2.4mm
1/8”
3.2mm
10
Lap/ Fillet
160-175 135-160 Butt/Corner ¼”
6.4mm
170-200 160-180
1/8”
3.2mm
5/32”
4.0mm
10
Lap/ Fillet
Table 14 – DC TIG Welding Parameters