Welding Wire Size Guide

Fully annealed stranded bare copper per astm b 172.

Welding wire size guide.

In the metric system welding cable size is typically expressed in square millimeters mm2 representing the cross sectional area of the cable. Cable sizes between 4 and 4 0 are typically used for welding cable. Double click on chart to view quick guide for selecting mig wire size and welder amperage for your application. If your wire is solid the code states that there is a 0 001 tolerance range for 0 045 wire.

Multi pass welding or a beveled joint design may be required for material thickness 3 16 and greater depending on power output capability. If you have the specifications readily available you can simply choose the appropriate wire with your specs from the welding cable size chart. The american welding society aws code 5 18 allows some flexibility on the contact tip. Figure 2 shows a comparison between welding cables in awg sizes and metric sizes.

If one or more of the criteria is not defined on the welding cable size chart it would be safe to go with a wire that correspond to the larger size from your required specs. Multi pass welding or a beveled joint design may be required on material thickness 3 16 and greater depending on your welding machine s amperage capability. Figure 1 lists the awg sizes. Check with your machine manufacturer for any information that may pertain to your welding system.

Choose from temco line of 600v welding cable.