7 Best Flux Core Wires (March 2020) – Top Pick & Reviews

Beginner welders find that using flux core is one of the best methods to start their welding jobs and experienced welders find it convenient since they do not need to use gas.

Flux core wires are compatible with a large variety of metals that includes nickel alloys, stainless steel, low-alloy steel, mild steel, etc.

Below we talk more about the best flux core wire and where each is used and good for.


7 Best Flux Core Wire Reviews


1. Blue Demon E71TGS .035 X 1LB Spool Gasless Flux Core Welding Wire

Blue Demon E71TGS .035 X 1LB Spool Gasless Flux Core Welding Wire

The Blue Demon is one of the most popular brands imported from the USA and priced well too.

Fix your roof effortlessly

Using the Blue Demon, you can weld any galvanized roofing sheet metal and similar application.

Fix your car without effort

The Blue Demon will join any automobile sheet metal.

Perfect tap and butt welding

Using galvanized sheet metal and Blue Demon welding wire, you will be able to use a lap and butt welding method to weld anything with the Blue Demon E71TGS.

The drawback

It is one of the pricier welding wires and it's not for the beginners.


  • You can weld single pass.
  • You can weld with it in every position.
  • Various weights like one, two, and ten pounds spools.
  • Diameter sizes 0.030, 0.035 and 0.045


  • Not for beginner.

As single-pass, all-position flux cored wire you can weld a variety of metals including carbon steel. We highly recommend it when you want to eliminate using gas.


2. INETUB BA71TGS .030-Inch Flux Cored Welding Wire- TOP PICK

INETUB BA71TGS .030-Inch Flux Core Welding Wire

The Inetub is excellent for mild steel welding applications and has excellent reviews from verified users.

Excellent bead appearance

Your weld will look professional even if you are a beginner welder

Easy to clean weld

The low spatter makes cleaning easy with full stag cover as well as free of porosity

High Feedability

The arc action is smooth and Feedability is extra smooth making it great to weld

Multiple uses

You can weld boilers, tanks, earthworks, and construction steel types as well as zinc-coated steel plates and galvanized steel too

The drawback

It can only weld straight-polarity but great for drafty conditions and outdoor.


  • Easy to remove slag with low spatter.
  • Suitable for any welding position.
  • Available weight of two-pound spool and ten-pound spools.
  • Wire diameter 0.030.
  • No need for shielding gas.
  • Porosity free and full slag cover.
  • Excellent for outdoor use and windy conditions.


  • Sometimes get stuck during a weld

In summery...

With this wire, you can weld a variety of metals including carbon steel, as well as zinc-coated and galvanized steel.

We highly recommend it when you want to eliminate using gas since it is self-shielding.


3. INETUB 035-Inch - BA71TGS ​Flux Cored Welding Wire

INETUB 035-Inch BA71TGS Flux Cored Welding Wire

Inetub is a top manufacturer with prime carbon steel gasless flux core wire that is easy to weld with, have a high feed ability action and offers smooth arc action too.

It can be a good choice for a beginner welder

Top choice for beginner welders

If you are a beginner, you will love the ease of weld it delivers with minimal spatter and the wire feeding is effortless and consistent.

Cheaper than most but better than most

When you consider its affordability, you could have expected it to be inferior quality, however, it is better than most including Lincoln or Hobart welding wires.

Low carbon steel welding

If you get a less than perfectly smooth weld you probably weld the wrong steel types. Low-carbon steel will leave great results.

Adheres to surfaces

You do not need to worry about the weld to adhere to two joints as it adheres perfectly the first time.

The drawback

Much less spatter compared to other top brands, but it would have been nice if the spatter was even less than it is.

If you use low carbon steel, it probably welds smoother.


  • 2 pound spool and 0.35-inches diameter.
  • Excellent feed ability and easy to weld.
  • Good bead appearance.
  • Porosity-free.
  • Easy to remove slag.
  • All-position welding.
  • Single and multi-pass welding capable.


  • Do not expect a splatter-free weld.

To the final thought is, it is cheaper than others but give you the quality of welding.


4. Forney E71TGS .030 42300 Flux Core Mig Wire

Forney E71TGS .030 42300 Flux Core Mig Wire

Forney is a top brand selling as a two-pound spool and diameter of 0.030 suitable for various steel thicknesses.

Also used for MIG welding

The Forney welding wire is excellent for all mild steels that you can weld with a MIG welder and ideally suited for applications like tanks, assembly welding, railroad repairs, machinery part fabrications, and any light construction work in and around your house or small business.

No need to clean steel beforehand

You can weld directly on steel that is rusted, painted and dirty without the need to clean it first.

Extraordinary penetration

You will get extraordinary penetration in both single pass and multi-pass welding.

Excellent performance

Welds excellent when you run it on applications with high speeds.

Thicker steels allowed

You do not need to use different wire when you need to weld thicker steel as it welds 18-gauge and thicker with ease.

The drawback

You will find the spatter quite a bit, however, it welds much cleaner when you add gas even though it does not require gas, it can be added.


  • It can weld 18-gauge and thicker mild steel.
  • No need to use gas but when using Argon/CO2 mixture spatter will be reduced.
  • Great for outdoors when winds are strong.
  • Use in single-pass operations using high travel speeds.
  • Runs much hotter than any solid wire.
  • Use on all positions MIG welding of mild steel
  • Do not need to clean rusty materials.


  • Could create an erratic arc for the first few inches.

The best part is; it can weld any materials that are dirty, rusty and painted too. It runs much hotter than any solid wire and welds steel of 18-gauge and thicker with ease.


5. Blue Demon E71T-11 X .035

Blue Demon E71T-11 X .035

The Blue Demon is a self-shielding flux core that is excellent on all carbon steels. It is perfect for limited-pass operations and you do not need shielding gas either.

Fix your roof effortlessly

Using the Blue Demon, you can weld any carbon steel sheet metal and similar applications.

Fix your car without effort

The Blue Demon will join any automobile parts and sheet metal.

Perfect tap and butt welding

Using carbon steel or metal with Blue Demon welding wire, you will be able to use a lap and butt-welding method to weld anything with the Blue Demon E71T-GS.

The drawback

It is one of the pricier welding wires but also one of the best and you can weld in all positions too and the inability to weld aluminum is all drawbacks we could find.


  • Wire runs smoothly.
  • Beautiful arc.
  • Perfect beading after scrubbing splatter.
  • Minimal slag
  • No need to keep reinstalling rolls on large jobs with 10-pounds of wire


  • Cannot weld aluminum.

To sum up...

The blue demon E71T-11 X .035 can weld all position and a variety of metals including carbon steel and galvanized steel.


6. Hobart H222106-RTP 0.030

Hobart H222106-RTP 0.030

Hobart offers the four-pound, 0.030-inch E71T-11 flux core wired as a twin pack for an excellent deal.

Fix all steels effortlessly and affordable too

Using the Hobart wire you can weld any carbon steel sheet metal and similar applications and top it all are you getting a great price since it is a twin pack deal at single pack pricing.

Also used for MIG

The Hobart wire is excellent for all steels that you can weld with a MIG welder.

Extraordinary penetration

The penetration is amazing when using high heat welding settings even great for rookie welders.

The drawback

You might find that it smokes more than other wires, but at the same time is the spatter much less.


  • Perfect for MIG and flux core welding.
  • 0.030 gasless wire
  • Dual shield welding.
  • Low spatter.
  • Excellent penetration when welding at high settings.


  • It can cause smoke.

Compared to other welding wires in the same price range you will find it gives much less spatter and the weld is clean and smooth.


7. Blue Demon 308LFC-O stainless steel flux cored wire

Blue Demon 308LFC-O stainless steel flux cored wire

Blue Demon is a USA manufactured flux core gasless welding wire in various sizes including 0.035 suitable for Stainless Steel Welding.

Best performance for stainless steel applications

The Blue demon welding wire is excellent for all mild steels and stainless steel welding up to 430 stainless as well as the 300 and the 308L series stainless too.

Extraordinary penetration

You will get extraordinary penetration in both single pass and multi-pass welding and welds solid ER308L easily.


  • Uses an AWS A5 welding current of DCEP.
  • Perfect for various materials including 430 and 300 series Stainless Steel.


  • It does not run as smooth as other flux-cored wires.

The main part is...

It is one of the best welding wires on the market simply because of its ability to weld stainless steel regardless of whether it is thick or solid. 

It leaves a clean and smooth appearance without the need to clean it.


Types of Flux Core Wire

You get two kinds of the flux core wire. Which is gas-shielded and self-shielded.

Both flux core wires are gas shielded and slag is produced during the welding process that protects the liquid welding while it cools.This is a slag that you need to remove after you completed the job. 

With self-shielding flux-cored wire, you do not need argon or carbon dioxide as it contains a flux compound that automatically forms a gas that protects your welding.

Gas shielded flux-core wire does need shielding gas while welding and more difficult to use and usually not used when you are a hobbyist or beginner welder.

This type of wire is rather used when welding heavy-duty manufacturing and industrial fabrications.


How to Choose Best Flux Core Wire?

Here's the deal; 

When you purchased your welder the next thing on your mind is the type of filler or flux core you are going to buy.

Different flux-core wires have different performance and different welding qualities and use too.

As a rule, will you buy a flux core wire that has a high-performance rate and capable of welding a variety of projects like shipbuilding, offshore, construction, general fabrication and more.

The different flux core wires have a different and unique requirement and characteristics as well as a limitation.

Flux core wires are compatible with a large variety of metals that includes nickel alloys, stainless steel, low-alloy steel, mild steel, etc.

Below we talk more about the best flux core wire and where each is used and good for.


So What's The Verdict...

To conclude...

When using Flux core wire, you can weld outdoors with great eased regardless of weather conditions.

It is the top choice for both beginner and advanced welders that predominantly have to work outdoors and welding dirty, rusty and painted materials without the need to clean it first.

You do not need any external shielding gas to protect your welding. The flux compound that is contained within the center of the wire automatically reacts with the arc and forms its own gas.

These flux core welding wires that we list above are the best you can get regardless of wind and weather conditions and are forgiving of all metals that are contaminated with dirt and rust.

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