ARC STUD WELDING RECOMMENDED
MINIMUM BASE METAL THICKNESS

For arc stud welding there are minimum, recommended based metal thicknesses that should be observed for optimum stud welding results. The chart presents, by weld stud base diameter, these thicknesses for stud welding in Mild Steel and Aluminum. Also for arc stud welding using DC power supplies, input power can be rated as to the weld stud base diameter, in inches, that this power level will support. Studwelding requires special minimum levels of incoming DC power to operate stud welding equipment, or studwelders, for specific minimum diameters of weld studs.

STUD WELD BASE DIA (in) STEEL ALUMINUM WITHOUT BACKUP WITHOUT BACKUP WITH BACKUP (in) (gage) (in) (in) 0.187 0.250 0.0359 0.0478 20 18 0.125 0.125 0.125 0.125 0.312 0.375 0.0598 0.0747 16 14 0.187 0.187 0.125 0.187 0.437 0.500 0.0897 0.1196 13 11 0.250 0.250 0.187 0.250 0.625 0.750 0.148 0.187 9     0.875 1.000 0.250 0.375

ARC STUD WELDING DC POWER SUPPLY REQUIREMENTS

POWER SUPPLY (NEMA RATED) STUD WELD BASE DIAMETER IN INCHES 400 AMP UNIT 600 AMP UNIT TWO - 400 AMP UNITS IN PARALLEL TWO - 600 AMP UNITS IN PARALLEL OR ONE MIDWEST FASTENERS UA - 1800-PS ONE - 200 AMP UNIT OR ONE MIDWES FASTENERS UA-2500-PS TWO - 2000 AMP UNITS IN PARALLEL OR TWO MIDWEST FASTENERS UA-2500-PS-S IN PARALLEL