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How to TIG Weld Mild Steel?

tig weld mild steel

TIG welding is an effective and versatile technique for joining mild steel. It’s a popular choice for welders because it produces strong and clean welds that don’t have any spatter or slag. TIG welding can be used on thin and thick materials alike, making it a great option for mild welding steel. If you’re looking to learn how to Tig weld mild steel, then look no further! Read on to find out everything you need to know about the process of Tig welding mild steel.

Setting Up Your TIG Welder

When starting out with TIG welding, you’ll want to make sure your welder is set up properly. This includes selecting the correct current, amperage, and voltage settings for the material you are working with. Mild steel typically requires an AC/DC power source with a range of 10-200 Amps or higher. You should also adjust the filler rod diameter accordingly; for most applications involving mild steel, a 3/32-inch diameter rod works best.

Selecting The Right Filler Metal

The next step in learning how to tig weld mild steel is selecting the right filler metal. When welding mild steel, it’s important to use a low-hydrogen electrode such as E6010 or E7018 which contain manganese and iron oxide additives that help reduce porosity in the weld joint. You should also use a shielding gas that is compatible with your chosen electrode type; argon is typically used when working with mild steel, but other gases like carbon dioxide can also be used depending on the application. Lastly, make sure your filler rod has been cleaned prior to welding, as contaminants can cause excessive spatter and poor-quality welds.

Welding The Joint

Once everything is set up correctly, you can begin welding your joint together by slowly feeding in your filler metal while keeping the torch at a consistent distance from the surface of the metal being worked on (typically around 1/2 inch). Make sure that you maintain an even arc throughout the entire process; this will help ensure good penetration into the base material and create strong bonds between both pieces of metal being joined together. As always, remember to wear protective gear such as gloves and goggles when performing any kind of welding work!


By following these steps, anyone can learn how to tig mild weld steel quickly and effectively! With its clean finish and strong results, tig welding has become one of the most popular methods of joining metals together – especially when working with mild steel – so why not give it a try? With some practice and patience, you, too, could become an expert tig welder in no time! So what are you waiting for? Get started today!

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