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.

Welding wire size guide.

Double click on chart to view quick guide for selecting mig wire size and welder amperage for your application. If you have the specifications readily available you can simply choose the appropriate wire with your specs from the welding cable size chart. If your wire is solid the code states that there is a 0 001 tolerance range for 0 045 wire. Check with your machine manufacturer for any information that may pertain to your welding system.

You can select for a certain type of wire. 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. Cable sizes between 4 and 4 0 are typically used for welding cable. 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.

Figure 2 shows a comparison between welding cables in awg sizes and metric sizes. Fully annealed stranded bare copper per astm b 172. Choose from temco line of 600v welding cable. Multi pass welding or a beveled joint design may be required for material thickness 3 16 and greater depending on power output capability.

The american welding society aws code 5 18 allows some flexibility on the contact tip.