7
WELDING CONDITIONS
Table 11-1 and -2 list mig spot welding
conditions for mild steel and aluminum. In addition, stainless steel
spot welds may be made using conditions
similar to those listed in Table 11-1. However, the appropriate
shielding gas and wire electrode must
be used. Again, these conditions should serve only as a starting
point. Table
11-1 – Spot Welding Conditions for Mild Steel STOCK
ARC ARC
ARC SIZE
WI R E CURRENT
VOLTAGE DURATION
IN. mm
IN. mm
(AMPS)
(VOLTS) (SEC)
.060
1.5
3/64 1.2
250 34
.5 3/64
1.2 200
33
1.0 .075
1.9 3/64
1.2 275
34.5 .5
3/64 1.2
225
33.5 1.0
.090 2.3
3/64
1.2 315
35 .5
3/64 1.2
250
34
1.0 .105
2.7 1/16
1.6 390
34 .5
1/16 1.6
325 33.5
1.0 .130
3.3
1/16 1.6
450 35
.5 1/16
1.6 365
34
1.0 .188
4.8 1/16
1.6 565
38 .5
1.6
460
35
1.0 .250
6.4 3/32
2.4 660
37 .5
1/16
1.6
575
38
1.0 SHIELD
GAS: CO2 WELDING
WIRE: E70S-4
