Tig Welding Different Thickness Steel. How to Tig Weld a Steel Pipe. Smaller electrodes start easier and perform better at lower heat settings which helps prevent burn.
TIG welders can usually weld one thousandth 0001 of an inch of mild steel per amp. TIG welding is well compatible with metals like stainless steel mild steel and aluminum. It is recommended that a welder should use023- or024-inch wire for light gauge sheet metal work.
Some of the metals that are commonly TIG welded are.
When TIG welding different thickness parts say for example in a lap joint of a piece of 316 flat bar to a14 ga 080square tube mild steel or ss parts other would be a joint of small tube dia to solid rod like the one in the tig finger video what would be the guideline for setup amperage tungsten dia rod dia and most important how wide the bead has to be. How to Tig Weld a Steel Pipe. When TIG welding mild steel youll want to use a DCEN direct current electrode negative polarity Argon gas and Thorium Tungsten. Beyond that thickness apart from for specialist applications you would tend to do multiple runs or just use TIG for the root weld and use Arc or MIG for filling in the remainder of the joint.