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Gasflow 15 to 20 cfh
(7.1 - 9.4 L/min.)
Helium, + 7-1/2% Argon,
+2-1/2% C0
2
Electrode 0.030 in. (0.8mm) dia.
Plate Thickness (in.) 0.063 0.078 0.093 0.125 0.063 0.078*
Plate Thickness mm. 1.6 2.0 2.4 3.2 1.6 2.0
Electrode Size in. 0.030 0.030 0.030 0.030 0.030 0.030
Electrode Size mm. 0.8 0.8 0.8 0.8 0.8 0.8
Current DC(+) 85 90 105 125 85 90
Voltage* 21 - 22 21 - 22 21 - 22 21 - 22 21 - 22 21 - 22
Wire Feed Speed (ipm) 184 192 232 280 184 192
Wire Feed Speed mm/sec. 78 81 98 119 78 81
Welding Speed (ipm) 17 -19 13 - 15 14 - 16 14 - 16 19 - 21 11.5 - 12.5
Welding Speed mm/sec. 7.2 - 8.0 5.5 - 6.3 5.9 - 6.8 5.9 - 6.8 8.0 - 8.9 4.9 - 5.3
Electrode Required (lb/ft) 0.025 0.034 0.039 0.046 0.023 0.039
Electrode Required kg/m 0.037 0.051 0.058 0.069 0.034 0.058
Total Time (hr/ft of weld) 0.0111 0.0143 0.0133 0.0133 0.0100 0.0167
Total Time hr/m of weld 0.0364 0.0469 0.0436 0.0436 0.0328 0.0548
FIGURE 16 — Suggested procedures for GMAW of butt joints and lap joints in 200 and 300 series
stainless steels using the short circuiting transfer mode.
FIGURE 17 — Schematic of the hot-wire system for the automatic TIG welding of stainless steels.