What is TIG Welding: How It Works Explained Easily

Marcus Colson Last updated on September 12, 2023
Reading Time: 5 Minute

Are you intrigued by the prospect of fusing metals with incredible precision? TIG welding, short for Gas Tungsten Arc Welding (GTAW), might just be the ticket.

This method, known for its versatility and ability to produce high-quality welds, has a lot to offer for both beginners and seasoned welders.

In this comprehensive guide, we’ll get you acquainted with everything you need to know about TIG welding, from its history and key features to its applications and best practices.

How Did TIG Welding Come to Be?

TIG welding wasn’t born yesterday; it has a rich history dating back to the 1940s.

Originally conceived to address the complex and rigorous needs of the aerospace industry, it soon found applications in other sectors too.

As a subtype of Gas Metal Arc Welding (GMAW), TIG welding—or Gas Tungsten Arc Welding (GTAW) as it’s formally known—stands out particularly because of its cleanliness and minimal finishing requirements.

In the aerospace sector, where every millimeter and microsecond count, TIG welding emerged as a godsend.

It offered a process that achieved not just a robust weld but also one free from contaminants, making it the industry’s gold standard for quality and precision.

What Sets TIG Welding Apart? Key Features You Should Know

Before you dive into the TIG welding experience, it’s essential to have a clear understanding of its unique attributes.

  1. Non-consumable Tungsten Electrode: One of the defining characteristics is the use of a non-consumable tungsten electrode. Because the electrode doesn’t melt during the welding process, you don’t have to keep replacing it, leading to a longer-lasting and more economical tool.
  2. Inert Shielding Gases: In TIG welding, the choice of shielding gas plays a vital role. The use of inert gases like argon or helium ensures that the weld area is kept free from atmospheric elements like oxygen and nitrogen, which could otherwise compromise the quality of the weld.
  3. Flexibility with Filler Material: The adaptability of TIG welding shines through its option to use or skip filler material. This provides added flexibility, letting you customize the weld’s thickness and strength according to the specific needs of your project.
  4. DC and AC Power Sources: The ability to work with both direct current (DC) and alternating current (AC) makes it adaptable for various applications. For example, DC is often used for steel, while AC is more suited for metals like aluminum. Read this: AC vs DC Welding: Which is the Best Fit for Your Needs?

How Does TIG Welding Work?

Welding through TIG is more than just sticking metal pieces together. It’s a sophisticated process that demands skill and attention to detail.

An electric arc forms between the tungsten electrode and the workpiece, enabled by the high melting point of tungsten, which makes the arc exceptionally stable and clean.

Now, the real skill comes in juggling three key elements: the hand-held TIG torch, the filler rod, and the electrical current.

Managing these three successfully is no small feat, but with ample practice, you can achieve incredible precision and control, elevating your welding projects to the next level.

What Can You Weld with TIG?

TIG welding is not just a one-trick pony. Its versatility allows you to work on a plethora of metals—ranging from everyday metals like mild steel and stainless steel to more exotic ones like titanium and even gold.

Its applications span numerous industries, including aerospace, automotive, pipeline construction, and even artistry.

What makes TIG welding exceptionally useful is its ability to adapt to complex shapes and patterns.

If your project involves intricate ‘S’ shapes, loops, or tight corners, this method provides the control and flexibility you need.

It’s also a favorite for creating visually appealing welds on sculptures, architectural features, and customized automotive work.

What Equipment Will You Need?

Before you start your TIG welding venture, you’ll need to assemble the right toolkit.

  1. TIG Welder Unit: The core of your setup, this unit regulates the electrical current and controls the arc. Quality counts here; a reliable unit can make or break your welding experience.
  2. Ground Cable: A ground cable is mandatory to complete the electrical circuit. Make sure it’s well-insulated to prevent any accidental electrical discharges.
  3. Electric TIG Torch: The torch houses the tungsten electrode and often comes with adjustable settings for better control.
  4. Shielding Gas Bottle and Regulator: The shielding gas and its regulator protect the weld from atmospheric contamination. Opt for a high-quality regulator to ensure a consistent gas flow. Read this: Welding GAS Cylinder Sizes: Discover the Best Gases
  5. Optional Foot Pedal: For those who seek precision, a foot pedal allows for fine-tuned control over the electrical current.
  6. Safety Gear: Safety should always be your priority. Invest in a good-quality welding helmet and wear gloves that offer both protection and dexterity.

Is TIG Welding Easy to Learn?

Mastering TIG welding can be challenging but highly rewarding.

Unlike simpler welding techniques, TIG demands that you use both hands—one to control the torch and the other to feed the filler rod.

It’s a dance of coordination that can be tough to grasp initially. But with practice, you’ll find that the level of control and precision you achieve is well worth the effort.

Quality counts, not just in your technique but also in your choice of materials. Opt for high-quality shielding gas and filler rods to ensure that your welds meet or exceed industry standards.

There’s no shortcut to mastery; it comes only with consistent practice and a dedication to improving your skills.

Pros and Cons of TIG Welding

Every welding method has its advantages and disadvantages, and TIG welding is no different.


  • You gain unmatched control over the arc and weld puddle, offering an unparalleled level of precision.
  • Its versatility extends to a wide range of metals and varying thicknesses.
  • The process is remarkably clean, producing minimal smoke and allowing for easy visibility.
  • Welds are not only strong but also resistant to corrosion, making them long-lasting.


  • The process can be slow, especially for larger projects.
  • There’s a steeper learning curve compared to simpler welding techniques.
  • It’s challenging to achieve a good weld in windy or uncontrolled environments.
  • Quality comes at a price; expect to invest in specialized equipment.

Tips for Success

Here are some extra insights to help you get the most out of your TIG welding projects:

  • A clean workspace is not just aesthetically pleasing; it’s crucial for safety and efficient work.
  • Keep the tungsten electrode from touching the workpiece to maintain the purity of the weld.
  • Employ a foot pedal for finer control of your heat settings, especially for intricate jobs.
  • Some metals, like stainless steel, benefit from pre-heating to reduce the risk of cracking.

Read Also : What is Plasma Welding? Truly Comprehensive Tips

Career Paths and Certification

TIG welding isn’t just a hobby; it can also be a lucrative career.

Skilled TIG welders are in high demand across various industries, from aerospace and automotive to artistic installations.

If you’re considering making it a full-time gig, getting certified will open doors to higher-paying and more specialized jobs.

Read Also : TIG vs Stick Welding: Which Method is Truly the Best?


So, we’ve delved deeper into the world of TIG welding. It’s not the easiest method to get your hands on, but its benefits in terms of control, adaptability, and quality are hard to beat.

Like any skill, it takes time and practice to master. But once you do, the possibilities are limitless.

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Marcus Colson
Marcus Colson

Welding is more than a hobby for me - it's a passion. The art of fusing metal together to create something new and functional never gets old. From intricate sculptures to sturdy structures, I love the endless possibilities that welding offers.

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