MIG Welding Wire
Electrodes used for MIG Welding are smaller than those used for other welding process. This is because of the high current and speed at which the welding filler material is introduced into the weld puddle.
Aluminum MIG Welding Wire
E4043 is the most common Aluminum MIG Welding wire for all-purpose Aluminum MIG welding work. ER5356 Aluminum MIG Welding wire is a stiffer wire (easier to feed), and is used when more rigid, higher-strength weld properties are needed.
Steel MIG Welding Wire
E70S-1, -2, -3, -4, -5, -6 Steel Alloy Wire is for MIG welding mild steel.
The prefix character “E” indicate electrode, the second character “7” indicates the tensile strength in 10,000 PSI, or 70,000 PSI.
For MIG Welding steel, there are two common wire types. Use an AWS classification ER70S-3 for all purpose, economical welding. Use ER70S-6 wire when more de-oxidizers are needed for welding on dirty or rusty steel.
MIG Welding Wire Size
When MIG welding thinner metals, use a smaller diameter MIG welding wire. For thicker metal use a larger wire and a larger machine. Refer to the MIG Welding wire size chart below.
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