TIG vs MIG Welding: What's The Difference?

Home/Store/TIG vs MIG Welding: What's The Difference?

TIG vs MIG Welding: What's The Difference?

tig vs mig welding main image

Welding is an important process used in manufacturing, building work, and metal jobs.

Two of the most common methods are TIG and MIG welding.

But what’s the difference between them?

Both have their own good points and work better for different jobs.

Choosing between TIG vs MIG welding depends on things like how precise you need to be, what material you’re welding, how much it costs, and how easy it is to use.

Knowing the differences can help you pick the right welding machine for what you need.

This article will explain how TIG and MIG welding work, their good and bad points, and show some examples of machines you can buy.

By the end, you’ll have a better idea of which one suits your projects best.

Key Takeaways

TIG welding gives very clean and precise welds with good control over the heat. It works especially well on thin metals and tricky materials like aluminium or stainless steel, but it takes more skill and is slower than other methods.

MIG welding is faster and easier to learn. It’s great for thicker materials and bigger jobs, but it can be messier with more spatter and isn’t as good in windy outdoor conditions.

Choosing between TIG and MIG depends on what you’re welding, how precise you need to be, and how much speed matters. TIG is better when the weld needs to look neat, while MIG is better for getting work done quickly.

There are good TIG and MIG welders from brands like Parweld, GYS, SIP, and Tigren. Some are better for beginners, others for professionals, and some can do more than one type of welding.

Both TIG and MIG need shielding gas to protect the weld, but TIG gives you more control and cleaner results while MIG is more forgiving and faster for everyday work.

What is TIG Welding?

TIG welding is a precise method that uses a non-consumable tungsten electrode and shielding gas to create clean, high quality welds on metals like stainless steel and aluminium.

TIG welding is a precise way to make high quality welds.

It uses a tungsten welding rod that doesn’t melt, creating an arc that melts the metal you’re joining.

A gas, usually argon, protects the weld from dirt and air getting in.

This method gives clean, strong, and good-looking welds with very little mess or spatter.

It works well on metals like stainless steel, aluminium, copper, and titanium.

Because of this, it’s often used in industries like aerospace, car making, and fine metalwork.

Compared to MIG welding, TIG gives you more control over the heat and how the weld looks.

It does take more skill to learn and is usually slower than other methods.

It’s best when you need precision and top quality results more than speed.

How Does TIG Welding Work?

TIG welding works by creating an arc with a non-consumable tungsten electrode, using shielding gas to protect the weld, and manually adding filler metal for precise, clean joins.

TIG welding is a careful and controlled way to join metals.

It uses a tungsten electrode that doesn’t melt.

Here’s how it works, step by step.

How the Arc is Made

It starts with an electric arc.

This arc forms between the tungsten electrode and the metal you’re welding.

Electricity flows through the electrode, creating a lot of heat that melts the metal surface.

The Gas Protects the Weld

A steady flow of TIG welding gas, usually pure argon, surrounds the arc.

This gas creates a protective shield around the hot weld.

Without it, oxygen and nitrogen from the air could weaken the weld or cause problems like holes or cracks.

Adding Filler Metal

Often, you add a separate filler rod by hand.

As you move the torch along the joint, you feed the rod into the melted metal.

The filler melts and joins with the base metals.

For thin welds, you can sometimes join the metals without adding filler.

Controlling the Weld

TIG welding needs both hands, one to move the torch, the other to feed the rod.

A foot pedal usually controls the heat.

This gives you fine control over the arc and temperature.

What the Finished Weld Looks Like

The result is a strong, clean, and precise weld.

It’s ideal for delicate work, tricky metals, and professional-looking finishes.

Examples of TIG Welders

Popular TIG welders include the Parweld XTT 212Di, GYS Protig 161, SIP WELDMATE Pro 200A, and Tigren TGN200TIG for various precision and general welding needs.

There are lots of TIG welders available, each suited to different kinds of work.

Here are four popular ones that stand out for how well they perform, how easy they are to use, and how well they’re built.

Parweld XTT 212Di

The Parweld XTT 212Di is a professional TIG welder that’s great for aluminium and stainless steel.

It has features like high frequency start and pulse control, which help give a stable arc.

Fabricators and car body specialists often choose it because it gives precise control and clean welds.

GYS Protig 161 DC TIG Welder

This is a compact and reliable machine that’s versatile too.

The GYS Protig 161 works well for TIG welding on steel, stainless steel, and copper.

It’s light and easy to move around, so it’s good for repairs on site or in the workshop.

SIP WELDMATE® Pro 200A DC TIG/ARC Inverter Welder

The SIP WELDMATE® Pro 200A is a machine that can do both TIG and stick (ARC) welding.

It has a digital display and adjustable settings, so it works for beginners as well as more experienced welders.

It gives smooth and steady performance for detailed jobs.

Tigren TGN200TIG DC TIG Inverter Welder

This one is a good value option that still performs well.

The Tigren TGN200TIG has user-friendly controls and solid build quality.

It’s a popular choice for hobbyists and small workshops who want precision without spending a fortune.

TIG Welding Advantages

TIG welding produces clean, high quality welds with precise control, minimal spatter, and versatility across many metals, especially thin ones.

TIG welders have quite a few advantages, especially when you need precise and high quality results.

It’s often the go to choice when neat, clean welds are important.

High Quality Welds

TIG welding produces very precise and clean welds.

You have full control over the heat and the filler material, which helps create neat seams with little or no spatter.

This makes it ideal for visible welds or when working with thin materials.

Almost No Spatter or Smoke

Because it uses a tungsten electrode that doesn’t melt and a shielding gas, TIG welding creates very little mess.

The process stays clean and doesn’t leave much residue behind, so it requires much less deburring.

It Works on Lots of Different Metals

TIG welding works well on many materials, including aluminium, stainless steel, copper, and others.

It’s especially good for thin metals and for doing fine, detailed work.

Precise Control

You can adjust the heat very accurately using a foot pedal or hand control.

This makes it easy to start and stop the weld whenever you need to, which is great for complex shapes or tricky joints.

TIG Welding Downsides

TIG welding is slower, requires more skill, costs more for equipment, and doesn't work well on dirty metals compared to other methods.

While TIG welding has quite a few good points, it also has some downsides.

These can make it less suitable for certain types of work.

Slower

TIG welding takes more time than methods like MIG.

Each weld needs more care and control, so the overall process is slower.

This makes it less ideal when you need to get a lot of work done quickly or when speed matters more than anything else.

Takes More Skill to Learn

TIG welding is not the easiest to pick up, especially for beginners.

You have to control the torch, feed the filler rod, and use a foot pedal all at the same time.

It takes practice and steady hands to get good results.

Equipment Costs More

TIG welders and their accessories are usually more expensive than other types of welding machines.

The machines often have extra features that add to the price, which can make it a bigger investment to start with.

Doesn’t Work Well on Dirty Metals

TIG welding works best on clean, smooth metal.

Dirt, rust, or oil can affect the quality of the weld.

This means you often need to spend extra time cleaning the metal before you start, which adds to the overall effort.

What is MIG Welding?

MIG welding is a fast, easy method that continuously feeds a wire electrode and shielding gas to create strong, clean welds on metals like steel and aluminium.

MIG welding is a common way to join metals.

It uses a wire that feeds continuously through the welding gun.

The welding wire melts to form the weld, while gas flows through the gun to protect it from the air.

MIG welding is known for being fast and easy to use. It works on metals like mild steel, stainless steel, and aluminium.

Because it’s semi-automatic, it’s quicker to learn than TIG welding.

It’s commonly used in car repair, construction, and manufacturing.

It’s great for making clean, strong welds with less effort, especially on thicker materials or bigger jobs

How Does MIG Welding Work?

MIG welding works by feeding a continuous wire electrode through a torch to create an arc that melts the wire and base metal, while shielding gas protects the weld.

MIG welders join metals by creating an electric spark between a wire and the metal you’re joining.

This spark melts both the wire and the metal, allowing them to fuse together as they cool.

The Wire That Feeds Through the Torch

In MIG welding, a thin MIG welding wire is fed continuously through the welding torch.

This wire acts as both the part that creates the spark and the filler that joins the metals together.

As it melts, it fills the gap between the pieces you’re welding.

How the Heat is Made

When you pull the trigger on the torch, electricity flows through the wire.

As soon as the wire touches the metal surface, it creates a spark.

This spark produces a lot of heat, which melts the wire and the metal you’re joining.

The Gas Protects the Weld

To stop the hot metal from being affected by the air, a shielding MIG welding gas is released through the torch.

Common gases include argon, carbon dioxide, or a mix of both.

This gas protects the weld from oxygen and moisture, which could otherwise weaken the join or cause problems.

Controlling the Weld

MIG welding is often quite straightforward to use.

The machine controls how fast the wire feeds and how much power is used.

The welder controls where the torch goes and how fast they move it.

This setup allows for faster welding, especially on larger or thicker pieces of metal.

Examples of MIG Welders

Popular MIG welders include the GYS Multiweld 180M-C, SIP Autoplus Eco Mig180, Parweld XTM 221-p3, and SIP HG4500 for various professional and heavy duty needs.

There are lots of MIG welders available, each designed for different people and jobs.

Here are four popular ones, each offering a good balance of power, reliability, and ease of use.

GYS Multiweld 180M-C

The GYS Multiweld 180M-C is a powerful welder aimed at professional users.

It has digital controls and works well on steel, stainless steel, and aluminium.

It’s compact and lightweight, so it’s handy for work on site or in busy workshops.

SIP Autoplus Eco Mig180 Inverter Welder

The SIP Autoplus Eco Mig180 Inverter Welder is known for being energy efficient and straightforward to use.

It’s a good option for smaller to medium welding jobs.

It has adjustable settings, so it suits both beginners and more experienced welders.

Parweld XTM 221-p3 5 In 1 Multi-process Inverter

The Parweld XTM 221-p3 5 In 1 Multi-process Inverter can do MIG, TIG, and stick welding.

It’s great if you need one machine that can handle different jobs.

With digital controls and a solid build, it’s popular with serious hobbyists and professionals.

SIP HG4500 MIG Inverter Welder

The SIP HG4500 MIG Inverter Welder is built for heavy duty work.

It has a separate wire feed unit to give better control over the wire.

It’s best for long runs of welding or when working with thicker materials.

MIG Welding Advantages

MIG welding is popular because it's easy to use, fast, produces clean welds with little clean up, and works well on many metals and thicknesses.

MIG welding is popular for lots of good reasons.

It’s widely used in both industrial and home settings because it’s fast, clean, and easy to learn.

Easy to Use

One of the biggest advantages of MIG welding is how simple it is.

The wire feeds automatically, so you can weld smoothly and continuously.

This makes it great for beginners.

You don’t have to add the filler by hand, which means fewer mistakes and less time wasted.

Fast and Efficient

MIG welding is much quicker than TIG welding.

It’s ideal for big jobs or when you need to get things done quickly.

Because the wire feeds continuously, there are fewer stops and starts, so you can work more efficiently.

Clean Welds with Less Mess

The gas protects the weld from the air, which helps create cleaner and more accurate welds with very little spatter.

This means you spend less time cleaning and grinding afterwards, saving you more time overall.

It Works on Lots of Different Metals and Jobs

MIG welding can be used on many metals, including steel, stainless steel, and aluminium.

It also works well on both thin and thick materials, making it useful for a wide range of projects.

The Equipment is Affordable

MIG welding machines are usually more affordable and easier to look after than TIG welders.

They’re a good choice for workshops that do a variety of jobs and want to keep costs down.

MIG Welding Downsides

MIG welding can struggle outdoors due to gas wind issues, offers less precision than TIG, is harder in awkward positions, produces more spatter, and creates bulkier welds.

While MIG welding is popular, it’s not perfect for every job.

There are a few downsides to consider before choosing this method.

Not Ideal for Outdoor Use

MIG welding uses gas to protect the weld from the air.

In outdoor environments, wind can blow the gas away, leaving the weld exposed.

This often leads to poor weld quality and defects.

Less Precision Than TIG Welding

MIG welding is faster, but it doesn’t give you the same level of control as TIG welding.

If your project needs very neat or detailed welds, like in artwork or car bodywork, MIG may not be the best choice.

Limited Positions

MIG welding works best in flat and horizontal positions.

It’s harder to get consistent welds when working overhead or in tight corners.

Higher Spatter Levels

Although cleaner than some methods, MIG still produces more spatter than TIG welding.

This means more clean-up time and the risk of small imperfections on the surface.

Thicker Welds Can be Bulky

MIG welds are usually thicker and may not look as neat.

This isn’t a problem for heavy duty tasks, but it’s not ideal for jobs where the weld needs to look good.

TIG vs MIG Welding: What's The Difference?

TIG welding offers clean, precise results with more control on thin materials, while MIG is faster, easier, and better for thicker metals but produces more spatter.

Feature	TIG Welding	MIG Welding
Weld Quality	Clean, precise, and visually appealing	Strong but less refined
Speed	Slow	Fast
Skill Level	Requires more skill and control	Easier to learn
Material Thickness	Best for thin materials	Best for thick materials
Cost	More expensive	More affordable
Spatter	Minimal	More cleanup required
Shielding Gas	Required	Required
Common Uses	Aerospace, automotive, fine metalwork	Manufacturing, construction, general fabrication

FAQ

How long does it take to learn TIG or MIG welding?

MIG welding can usually be learned in around 15 hours, where TIG welding can take as long as 200 hours to fully get to grips with.

MIG is usually quicker to learn for beginners because it’s more automatic.

TIG can take longer to get comfortable with because you have to control more things at once, but many people pick it up with practice and good instruction.

Which method is better for welding outdoors?

MIG can struggle outdoors because wind can blow the gas away.

TIG is also affected by wind, but some setups handle it better.

For outdoor work, stick welding is often easier because it doesn’t rely as much on gas protection.

Do I need extra equipment for TIG or MIG welding?

Both need shielding gas and proper safety gear.

TIG often requires a foot pedal and filler rod, while MIG needs a steady wire supply.

You may also need different torches or nozzles depending on the job.

How do the running costs compare between TIG and MIG?

MIG is often cheaper to run for everyday work because it uses less gas and filler wire per weld.

TIG can cost more over time because it’s slower and may need more gas for the same amount of welding.

Can the same machine do both TIG and MIG welding?

Some machines can switch between TIG and MIG with the right attachments, but most are designed for one main type.

Multi process machines like the Parweld XTM are good if you want flexibility without buying two separate welders.

Final Thoughts

You should now have a better idea of the difference between TIG and MIG welding.

Both methods have their own good points and downsides.

TIG welding is best when you need precise, clean welds. MIG welding is faster and works well for thicker materials.

If you want neat, detailed welds and don’t mind it taking longer, go with TIG.

If you need to get the job done quickly on bigger projects, MIG is usually the better choice.

Understanding the differences helps you pick the right one for what you need to do.

For more information, or help with all your welding needs, get in contact with us here at Xtreme Plasma.

About the Author

ROB ROSSETTI

Rob Rossetti is the owner, founder, and driving force behind Xtreme Plasma, where he also personally handles technical support and customer care.

After years working as an engineer producing precision components for the oil, gas, and water industries, he founded the business in 2010.

He drew on hands on workshop experience to originally manufacture precision parts before expanding into the in-house design and production of complete CNC plasma tables.