Best Flux Cored Wire

Top 5 Best Flux Cored Wires for Mild Steel in 2020

Nothing sucks an arc welder like excessive spatter!


Because, all we want is a smooth finishing, nothing else.

Admit it!

Let me explain, Flux core is literally a little more forgiving than typical solid MIG wire concerning “dirty” base metal, therefore, don’t be lazy. All you have to do is invest the time. And trust me; a little cleanup will go a long way. So a best flux core wire is a must-have item.

You start to worry that how you gonna find the Best Flux Cored Wire for mild steel from too much choices, right?

Don’t worry!

I drew up a list of some cool Flux Core Wire that can change the whole welding experience. Let’s jump right in.

What is Flux Cored Wire?

A flux-cored wire is used basically used for flux-cored arc welding. It is a viable option that is used to excel the performance of wielding starting from the general manufacturing and fabrication to various types of constructions.

Astonishing, isn’t it?

As every type of wires has a unique quality, so flux core wire has unique characteristics. Its unique nature and requirements have their own advantages and disadvantages.


  • Allow comparatively high depositing rate
  • Work better in outdoors and can work well n windy weather.
  • FCAW turns to be an ‘all-position’ process if the right filler materials are used
  • Create a strong and clean welds


  • Contacting with base metal may create a melted contact tip
  • The weld can be porous if the gases do not get out when the metal is still soft

What about Flux Core Wire Types?

Basically, Flux core wire types are two- self-shielded and gas-shielded. Self-shielded flux core wire does not need any external gas, whereas gas-shielded flux core wire needs gas from outside.

Flux-cored vs Solid wire- what’s the difference?

If you try to compare the flux-cored wire with the solid wire, you need to understand that the best choice would always depend on your wielding job and the location.

Too good!

For outdoor jobs, if your metal is thick, then the flux-cored wire would be your best choice. But for thinner metals and out of wind jobs, the solid wire can perform quite well. However, the flux cored wire is more costly than solid wire as you can carry them quite easily.

Top 5 Best Flux Cored Wires

Before tackling any mild steel welding project, ensure that you have a solid wire along with proper safety apparel that will protect you from any potential fire hazards.

Here are our reviews of 5 of the Best Flux Cored Wire for mild steel that protects the weld pool. Check this out:

1. Blue Demon Gasless Stainless Steel Flux Core Welding Wire E71 TGS .035

blue demon best flux cored wire

Yearn for a smooth arc action?

Look no further than this E71 TGS from the blue demon, because this flux core comes with narrow groove angles which gonna give you excellent pool control.

Blue demon 030 vs 035 flux core wire, how to choose?

Well, both are almost the same quality, but for steel fabrication 0.35 is recommended.

Style and dimension

  • Style: 10# Spool
  • Size: 0.035
  • Item Weight: 0.16 ounces
  • Installation Method: gas-welding
  • Battery required: no
  • Tensile strength: 70,000 Psi

3 Features you’ll Love About Blue demon E71

  • Self-shielded wire: The unique quality of this wire is that you don’t have to use extra shielding gas.
  • Low spatter flux core wire: It is quite impossible to eliminate spatter in welding specially MIG.but this wire simply allows the harmful spatter to slide off and not stick to it.
  • All-position welding wire: Welding positions are overhead, vertical, horizontal, and a result; you can weld a variety of metals.

Let’s not forget

As you can see, it’s a GS wire that means it only suitable for single-pass welding. Another thing you remember carefully if you have slag, so don’t forget to drag.

Things we liked most

  • Single-pass
  • Clean tip
  • A Fantastic price

What could be better?

  • Poor penetration
Check Price on Amazon

2. Inetub Carbon Steel Flux Cored Wire for harbor freight welder

inetub flux cored welding wire

Such a great performer in Drafty Conditions!

Let me say this straight:

I can’t compare this wire to other brands as it produces such a clean weld with effortlessly removed slag. Therefore, when we start too sorted out the top 5 Best flux cored wire, this 030 flux core wire comes out naturally.

Why am I saying this?

Just use it once; you will know that it flows like butter.

Style and dimension

  • Size: one pack
  • Item Weight: 2.2 pounds
  • Installation Method: gas-welding
  • Battery required: no
  • Style: 2# or 10# Spool
  • Diameter Sizes: 0.030 or 0.035

3 Features you’ll Love About inetub flux core wire

  1. Finest quality materials: Made in Italy from the to quality materials with the help of state of the art technology.
  2. Easily removable slag: With manuality; it is suitable for welding Zinc-Coated & galvanized plates as well.
  3. Versatility: Applications include Tanks, Automobile body repairs, Boilers, Earthworks, Steel structural works, and Construction works.

Let’s not forget

If you don’t change the polarity, don’t blame the manufacturer. Literally it’s pretty easy to do. All you have to do is just read the instructions manual that came with your machine.

Things we liked most

  • Straight Polarity
  • Good spool
  • Minimal and penetration

What could be better?

  • Produced a decent amount of splatter
Check Price on Amazon

3. Forney- Best Flux Cored Wire for Mild Steel

forney flux cored wire

An insane good wire for anyone Professional or Novice!

Yes, you heard that, right!

All position MIG flux core wire for mild steel that is fully self Shielded and performs well on rusty and painted Material.

Style and dimension

  • Color: Original Version
  • Item Weight: 2 pounds
  • Installation Method: MIG-welding
  • Measurement System: Metric
  • Style: welder with wire
  • Diameter Sizes: 0.030
  • Material: Mild Steel
  • Tensile strength: 79,000 PSI

3 Features you’ll Love About Forney welding wire

  • High travel speed: Best suited to any single pass applications with impressive travel speed and runs hotter than typical solid wires.
  • An argon/CO2: It’s true no gas is required, and an argon/CO2 mix works to reduce spatter.
  • Extraordinary penetration: The feature that makes this wire more appealing isextraordinary penetration in both multi-pass welding and single pass.

Let’s not forget

If you are planning to use 0.030 flux core wire, I would highly recommend buying 0.035 tips to secure wire from clogging /sticking the tip.

Things we liked most

  • 18-gauge thicker mild steel
  • Travel-friendly gear
  • Excellent performance

What could be better?

  • Only good for MIG welding
Check Price on Amazon

4. Weldingcity-Flux Core Welding Wire

welding city welding wire

Looking for a versatile wire that works well with both Tig as well as Mig welding?

Here it is, as smooth as a daisy!

US-based welding supplier, this single pass wire is equipped with Premium quality flux-core E71T-GS gasless mild steel MIG welding, a 10-Lb roll.

Style and dimension

  • Shape: Round
  • Item Weight: 10 pounds
  • Measurement System: Metric
  • Style: #10
  • Diameter Sizes: 0.030
  • Material: Mild Steel
  • Thickness: 1.5 inches
  • Assembled Diameter: 8 inches

3 Features you’ll Love about E71T-GS

  • Wrapped securely: you will glad to know that it‘s wrapped nicely in vacuumed aluminum foil.
  • Self-shielded: featuring Self-shielded; it doesn’t need any welding protection gases.
  • Smooth flow: with an impressive thickness, it’s smooth flow gives minimal splatter.

Let’s not forget

Be extra cautious and careful welding overhead with this wire. Keep the flammable component apart from your workplace.

Things we liked most

  • A lot cheaper
  • 2-in center hole
  • Single-pass fillet

What could be better?

  • Pretty heavy
Check Price on Amazon

5. Hy-Weld 023-Flux Cored Wire

mild stell welding wire

The standard of the HYW 2- roll ER70S wire is not quite up to the multipass flux core wire, but it’s not far behind handy and budget-friendly.

Sounds impressive, right?

Apart from these, it creates minimal spatter, as well as flows with sufficient heat, so you will find look good at less finishing work.

Style and dimension

  • Item Weight: 20 pounds
  • Measurement System: Metric
  • Style: 2 Rolls
  • Diameter Sizes: 0.23
  • Material: Metal
  • Number of handles: 1
  • Batteries required: No

3 Features you’ll Love about HYW ER70S-6.023″

  • Feds well: This HYW wire is very feedable, wound very carefully, makes it stable and predictable to feed and adding to the weld quality.
  • Flows nicely: The weld profile is pretty easy making uniform because of its fluidity.
  • 10 lb spool welding wire: 10-LB Spool of Mild Steel MIG Welding Wire makes it extra appealing.

Let’s not forget

No doubt, it’s good stuff for the money, but you have to buy two 10 pound spool separately.

Things we liked most

  • At a great price
  • Packaged nicely
  • No extra battery required

What could be better?

Not so smooth

Check Price on Amazon

Cheap VS Expensive Flux Core Welding Wire: What’s The Difference Really?

Obviously, flux core wire price is a big deal.

No wonder, flux-cored wire with a high price tag like Harbor and inetub flux core wire gives some fantastic features which we can’t expect with the low priced end product. That’s why it’s recommended to invest some bucks on quality. Trust me, they worth it.

How to choose Best Flux Cored Wire

Choosing the best flux core wire can be difficult for you if you have no experience about it. Here are some tips that can help you with choosing the right one.

Self or gas-shielded wire: Decide whether you need a self-shielded wire or a gas-shielded wire. Sometimes some self-shielded wires are sold out with separate shielding gas which can cause a problem in your wielding.

Size matter! : Choose the right flux core wire sizes for your welder. Do not choose .035 flux core wire if it needs to be set on the maximum level. Even you need to check the size of spool that your welder can take.

Price and brand: If you want a cheaper rate, then choose the larger diameter.

Type of the metal: The best flux core wire for mild steel can be chosen according to your metal. You just need to check whether it has a dull or high sheen and should choose wires according to it.

Frequently Asked question(FAQ) About Flux Cored Wire

Question 1: What is the best flux core welder?

Answer: GOPLUS MIG 130 is one of the best flux core welders. It is mainly popular for its’ lightweight and small size which can be brought in comparatively lower price.

Question 2: Does flux core wire need gas?

Answer: It depends on the type of flux core wire you are using. If you are using self-shielded flux core wire, then it does not need gas but if you are using gas shielded flux core wire, then it needs external gas.

Question 3: Can any MIG welder use flux core wire?

Answer: Yes, it can. Even flux core wires can be used in MIG when the gas is available as they work quite well in windy condition.

Question 4: What is the smallest flux core wire?

Answer: Till now, 0.030 is the smallest flux core wire available in the market.

Question 5: Flux cored vs mig strength -What’s the basic difference?

Answer: As a matter of fact, performance is a bit concerned, both wire produce sound welds with impressive weld bead appearances if used correctly and applied within the proper parameter settings.

Wrapping up Final Opinion

Keep in mind, to avoid dangerous Wire Feeding Problems; a good quality flux core wire is a must. After all who want an annoying welding experience, am I right?

Don’t be so economical and invest some bucks on it.

Out of all of this Best Flux Core Wire, which one did we recommend as the top performer?

Let’s narrow it down:

  • Best Overall: Blue demon welding wire E71 TGS
  • Runner up, Best value: Inetub ba71tgs carbon steel wire
  • Best Budget: Forney 42300 mig flux wire

Good luck. Safe welding!

There are no comments

Add yours

This site uses Akismet to reduce spam. Learn how your comment data is processed.