ER309 Aluminum Welding Wire

The ER309 Aluminum Welding wire is acknowledged mostly for welding stainless steel and other materials requiring strong protection against corrosion. This type of filler wire is often utilized in welding stainless steel to carbon steel or for welding between dissimilar metals. The designation “ER” stands for “electrode rod”; hence the wire functions as a filler wire in the welding process, typically in MIG (Metal Inert Gas) or TIG (Tungsten Inert Gas) welding methods. Generally utilized in extremes of arc, the composition of the wire ER309 typically comprises chromium, nickel, etc., which boosts strength, toughness, plus resistance to corrosion.