Tweco 200 ACDC Arcmaster(Feb2006) - Manual (Page 41)

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7.08 Welding Parameters for Aluminum
Table 13 – AC TIG Welding Parameter
Base Metal
Thickness
AC Current for
Aluminum
Tungsten
Electrode
Diameter
Filler Rod
Diameter
(if required)
Argon Gas Flow
Rate Liters/min Joint Type
30-45 Butt/Corner
0.040”
1.0mm
35-50
0.040”
1.0mm
1/16”
1.6mm
5-7
Lap/ Fillet
40-60 Butt/Corner
0.045”
1.2mm
45-70
0.040”
1.0mm
1/16”
1.6mm
5-7
Lap/ Fillet
60-85 Butt/Corner
1/16”
1.6mm
70-95
1/16”
1.6mm
1/16”
1.6mm
7
Lap/ Fillet
125-150 Butt/Corner
1/8”
3.2mm
130-160
3/32”
2.4mm
1/8”
3.2mm
3/32”
2.4mm
10
Lap/ Fillet
180-225 Butt/Corner
3/16”
4.8mm
190-240
1/8”
3.2mm
1/8”
3.2mm
10
Lap/ Fillet
240-280 Butt/Corner
¼”
6.4mm
250-320
3/16”
4.8mm
3/16”
4.8mm
13
Lap/ Fillet