38
CARBON
STEELS - Structural Quality Welds (Cont’d.)
Preparation t
Speed Diam.
Approx. Before
Finishing In.
Pass Amp.
Volts In./Min.
In. Lb./Ft.
Pass 1/4
BP* 400
32 28-45
3/32 or
1/8 0.10 None
FP** 500
30 27-45
3/32 or
1/8 0.12 5/16
BP* 420
32 28-40
3/32 or
1/8 0.11 None
FP** 550
30 26-40
1/8 or
5/32 0.15 3/8
BP* 500
32 28-32
1/8 or
5/32 0.14 None
FP** 650
32 24-32
1/8 or
5/32 0.18 7/16
BP* 600
33 24
1/8 or
5/32 0.20 None
FP** 700
33 22-27
1/8 or
5/32 0.25 1/2
BP* 650
33 22
1/8 or
5/32 0.23 None
FP** 750
35 20-25
1/8 or
5/32 0.27 9/16
BP* 700
33 20
1/8 or
5/32 0.25 None
FP** 800
35 18
1/8 or
5/32 0.32 5/8
BP* 725
33 18
5/32 or
3/16 0.28 Gouge
FP** 850
35 16
5/32 or
3/16 0.38 11/16
BP* 850
38 12
5/32 or
3/16 0.40 Gouge
FP** 1100
42 12
3/16 0.50
3/4 BP*
b60 38
12 3/16
0.45 Gouge
FP** 1100
42 12
3/16 0.50
Welding Wire
*BP = Backing Pass * *FP = Finishing
Pass Flame gouging
a groove 1/8 to 5/16-in. deep assures adequate penetration of the finishing weld
without excessive reinforcement. Use
ESAB 231, 350 or 50 Submerged Arc Flux for Plate Thicknesses 1/4 to 5/8 inch.
Use ESAB 350 or 50 Submerged Arc Flux
for Plate Thicknesses 11/16 to 3/4 inch. Two-Pass
Square And Single Vee Groove Welds
(1/4-in.
to 1 in.)
