Instructions / Assembly

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Silicon Bronze STT II Welding Guidelines
STT II Pipe Root Welding Guidelines
Diameter, Wires
CTWD Material
Shielding Gas Thickness Wire Feed Speed Peak Background Travel Speed Average
Joint Types Gauge (mm) in/min (M/min.) Amps Amps Tailout in/min (M/min.) Current
0.035” (0.9 mm)
C-22, 625, C2000 10 3.2 180 (4.6) 220 75 5 13 (0.3) 90
3/8” (9 mm) 12 2.4 170 (4.3) 210 70 5 14 (0.4) 85
90%He + 7.5%Ar + 2.5%CO
2
14 2.0 160 (4.1) 200 65 5 12 (0.3) 80
Lap, T-Joints, 16 1.6 150 (3.8) 190 60 5 15 (0.4) 70
Horizontal Fillets
C276 Nickel Alloy Sheetmetal
Diameter, Wire
CTWD
Material
Shielding Gas
Thickness Wire Feed Speed Peak Background Travel Speed Average
Joint Types Gauge (mm) in/min (M/min.) Amps Amps Tailout in/min (M/min.) Current
0.035” (0.9 mm)
Silicon Bronze Filler 14 2.0 180 (4.6) 190 60 4 13 (0.3) 90
3/8” (9 mm) 16 1.6 170 (4.3) 180 55 2 13 (0.3) 80
100% Ar 18 1.1 170 (4.3) 180 55 2 15 (0.4 80
Lap Joints
Carbon Steel Sheetmetal
Diameter, Wire
CTWD
Shielding Gas Wall
Root, Land Thickness Wire Feed Speed Peak Background
Included Angle Inches (mm) in/min (M/min.) Current Current Tailout
0.045” (1.1 mm), L-56 1/8 (3.2) 125 (3.2) 380 35 0
1/2” (12.7 mm) 3/16 (4.8) 135 (3.4) 380 45 0
100% CO
2
1/4 (6.4) 135 (3.4) 380 45 0
3/32” (2.4 mm), 5/16 (7.9) 135 (3.4) 380 45 0 - 2
1/16” (1.6 mm)
3/8
(9.5) 145 (3.7) 380 45 0 - 3
60
°
1/2 (12.7) 145 (3.7) 400 50 0 - 3
Carbon Steel Pipe - Root Pass Procedures
Diameter, Wire
CTWD
Shielding Gas
Wall
Root, Land
Thickness
Wire Feed Speed
Peak
Background
Included Angle Inches (mm) in/min (M/min.) Current Current Tailout
.0.045” (1.1 mm), Blue Max
1/8 (3.2) 115 (2.9) 190 50 5
308LSi, 309LSi, 316LSi
3/16
(4.8)
120 (3.0) 215 55 5
1/2” (12.7 mm)
1/4 (6.4) 120 (3.0) 215 55 5
90%He + 7.5%Ar + 2.5%CO
2
5/16 (7.9) 120 (3.0) 215 55 5
3/32” (2.4 mm),
3/8 (9.5) 130 (3.3) 220 62 5
1/16” (1.6 mm)
1/2 (12.7) 130 (3.3) 220 62 4
60°
Stainless Steel Pipe - Root Pass Procedures
Nickel Alloy STT II Welding Guidelines