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Sample Cost Calculation –
1/8 in. (3.2mm) fillet weld in low carbon
mild steel-Mig short arc Required
Information – Labor
hourly rate – $7.50 & $7.50 overhead = $15 Arc
travel speed (from Table 8.1, 0.045 in. wire) 27 inches
per minute (68.58 cm/min) Operating
duty cycle – 60%
Pounds of weld
metal required per foot – .03 lbs. (.044 kg/m) Deposition
efficiency – 95% – wire price per pound – $.65 ($1.43/kg)*
C-25 gas flow rate – 35 cfh (991
1/hr) C-25 cost
per cubic foot – $.075 ($.0026/1) +
$15
Labor + overhead 27 x 60 x .60 = $
.185 per foot of weld
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