Mig Welding Stainless Steel Without Gas (7 Effective Steps)

It’s common sense that we all need some particular gases while welding metals, especially stainless steel. But what about Mig welding stainless steel without gas? Is it even possible? 

Well, today, I’ll share the truth behind gasless Mig welding, including when you need any particular gas for that.

Stay tuned

Also check: the gasless mig welder machine

Can You Gasless Mig Weld Stainless Steel

Mig Welding Stainless Steel
  • Save

Yes, you can definitely MIG weld stainless steel without any gas. In fact, many welders these days like to rely on it for reduced equipment costs.

But for this, you’ll have to get your hands on a flux-cored self-shielding wire, which doesn’t need any extra gasses at all.

Talking about the diameter of the wire, it should be anywhere around 0.25 to 0.35 inches, especially for welding 20-gauge steel.

How to MIG Weld Stainless Steel without Gas (Step by Step)

To be honest, you can easily Mig welding stainless steel without any gas following the right technique.

That’s why I’m going to give you a step-by-step guideline that you must look for:

  • Step-1: Wearing Safety Dresses

Frankly speaking, flux core tends to generate excessive amounts of flashlights and fumes during MIG welding. In this case, if you overlook the necessity of wearing safety dresses, you may get sick or suffer from health issues.

So ensure to collect the necessary gear before you start welding, including gloves, a face mask, a welding helmet, and safety boots.

  • Step-2: Making the Metal Clean

I know many of you may argue about this step as flux-core can smoothly work with dirty metals. That said, if you clean it up before welding, I bet you can get more advantages during the ultimate work.

Trust me; it’s easy as pie. All you need is to brush up the entire surface of the metal and eliminate the dust.

  • Step-3: Switching the Machine On

You’ll need to load the wire into your device for this step. To stay in a safe zone, you must plug it into the right place and then start it carefully. Feel free to take assistance from the user manual to get the necessary instructions regarding wire loading.

  • Step-4: Selecting the Ideal Strength of Current

Here, you need to be smart enough while selecting the current strength. In order to do so, consider the overall thickness and metal type. As a rule of thumb, the current strength may turn stronger if the metal you choose is thicker.

And similarly, the thinner the piece of metal, the weaker the current will be.

Experts’ Advice: Increase the steel heat level, and decrease the heat as much as possible for flux core welding aluminum.

  • Step-5: Adjusting Wire Feed

Let’s install a specific gear on the welding machine, only if that has no particular automatic feed option. In this case, perform the task following the same technique of car gear. Now, simply go for a test if you’re pretty new.

Collect some useless metal pieces to set them on the workstation for the step. Switch on the welding machine to observe the ideal current strength. Find out whether it is easier or tougher to burn metal pieces.

In case you can’t easily get the material welded, feel free to turn the heat up a little bit.

  • Step-6: Time for Welding!

If you find everything okay, go for the real action: Mig weld stainless steel. Make sure to set up the material correctly that you want to weld to the workstation. Afterward, start up the welding machine and follow the user instructions.

  • Step-7: Allowing the Metal to Get Cool

The title says it all; once the welding is done, shut down the tool and wait for a bit to let the metal cool. After a couple of minutes, keep your eyes on the metal pieces to observe whether you’ve successfully completed the job or not. Hope you won’t notice anything wrong.

MIG Welder Settings for Gasless Welding Stainless Steel

Adjusting the setting of your flux-core is crucial for the best outcome. So, before you get into starting the welder, select the ideal amps number for your desired stainless steel welding project.

Indeed, the majority of MIG welding machine features a specific control panel so that you can control the settings while needed.

Depending on the type of material, make sure to select the welder’s parameters. Considering the thickness of the material is another important factor for a proper setting.

Let’s say stainless steel of 1/4” will need around 180 amps or so.

Do You Need Gas for Mig Welding?

The answer is that it depends. MIG welding is compatible with both gas and gasless operations, meaning there is the flexibility of choosing a single one that matches your preferences or welding projects. Welders often use CO2 and pure argon when they need gas for Mig welding.

In contrast, if your project won’t require any kind of gas, then feel free to take assistance from flux-cored Mig welding, which gives you enough flexibility in terms of MIG welding stainless steel without gas. It’s all up to you.

Last Words

As you can see, there is an easy-peasy way of Mig welding stainless steel without gas. I’d say gas is nothing but a choice to weld stainless steel or other types of materials.

So, if you find the method effective that I’ve mentioned, then try this out using nothing but flux-core. 


  • https://americantorchtip.com/blog/the-fundamentals-of-mig-welding-gases/
  • https://www.twi-global.com/technical-knowledge/job-knowledge/mig-welding-004

Leave a Comment

Share via
Copy link