Best Flux Core Wire

Best Flux Core Wire 2020

Are you the kind of person who likes welding or often take up home improvement jobs that require welding? Then you should know more about flux core wires.

It does not matter if you are a professional or an amateur just trying out your hand at welding, flux core wire should always be in your inventory.

Why is that?

This is because using flux core wire happens to be one of the great ways of welding if you are a beginner. It allows you to learn and get better easily.

As for professionals or experienced welders, they all seem to prefer the flux core wire since it is more convenient. It also allows them to avoid using gas.

But finding the perfect flux core wire may be difficult seeing how there are so many different kinds in the market. That is why we have compiled a list of the best flux core wire for you.

list of Top Flux Core Wire

Best Flux Core Wires Reviews

1. Forney 42300 Flux Core Mig Wire | The Best Flux Cored Wire For Mild Steel

Forney 42300 Flux Core Mig Wire, Mild Steel E71TGS.030-Diameter, 2-Pound Spool, Silver, Pack of 1
  • All position flux core MIG wire for mild steel that is a self Shielded and works well on rusty, dirty and painted Material
  • Best suited to single pass applications with high travel speed, runs hotter than solid wires

Forney 42300 Flux Core Mig Wire is a self-shielded wire and works well in almost all positions.

This particular flux core wire has been noted to be the perfect tool to be used in outdoors during windy conditions. It also happens to work well in all three of rusty, dirty and painted materials.

The Forney 42300 Flux Core can be used in almost every situation. However, in order to get the best out of this item, it should be used in single pass applications. These applications that require high travel speed this is because it can run hotter than most other solid wires.

As mentioned earlier that tensile strength [PSI] is important and the Forney 42300 has a tensile strength of 79000 which is above the set standard.

It is recommended that the polarity of this wire be DCEN or Direct Current, Electrode Negative, Straight.

A lot of people may think they can use the Forney 42300 for soldering purposes. However it is highly discouraged to use it for soldering. As this particular flux core wire was made for mid welding machines only.

The thickness measurement for this item is 0.03 inches. No batteries are needed to operate it. The overall weight of the wire is 2 pounds. The measurement system is in Metric.

Highlighted Features:

1. Widely considered as the best flux cored wire.

2. Works in all types of conditions.

3. Performance is at its highest when used in single pass applications.

4. Very low priced compared to most other flux core wires.

2. INETUB BA71TGS | The Best Flux Cored Wire For Harbor Freight Welder

INETUB BA71TGS .030-Inch on 2-Pound Spool Carbon Steel Gasless Flux Cored Welding Wire
  • Gasless flux cored welding wire AWS E71T-GS, Smooth arc action, High feedability, Easy to weld
  • Shielding gas is not required, All positions, Single and multi pass welding

If your work includes working on the harbor freight and you need some welding done there then this should be your go to flux core wire.

It is made in Italy using only the finest quality materials. The state of the art technology used to manufacture this only highlights the quality of this wire. Not only was that, the labor conditions kept to the highest levels when making the INETU BA71TGS.

No type of shielding gas is required to use this particular flux core wire. It can be used in all positions. In terms of applications, this is used in a single as well as multi pass welding.

One of the great sides of using the INETU BA71TGS is the low spatter. When using it to weld arcs, there will be almost minimum spatter and even if there is a little amount, it is very easy to remove it. There is full slag coverage with this item and it is porosity free too.

Using this flux core wire will give you that smooth arc action everyone looks for. It has a high feed ability and one can easily use it to weld. The Good bead appearance also adds to the whole performance.

The INETU BA7TGS has been designed for welding thin carbon as well as carbon-manganese steels in all positions. But that’s not all, its high tensile strength and quality materials make it suitable for welding Galvanized & Zinc coated plated as well.

This particular flux core wire can be often seen being used in Automobile body repairs. The list also includes tanks, boilers and heavy steel structures. You can also find it in earthworks and construction sites too.

It is great for welding in outdoors or in conditions that are drafty. A DCEN, single polarity should be used when welding with the INETU BA7TGS.

Highlighted Features:

1. Its build gives you the smooth arc.

2. Can be used in all positions and materials.

3. Low spatter with easy to remove spatter feature.

3. Blue Demon E71T-11X | TheBest .030 Flux Core Wire

Blue Demon E71T-11 X .035 X 10LB Spool gasless flux core welding wire
  • Package Dimensions: 20.980 H x 6.680 L x 20.675 W (centimetres)
  • Package Weight: 4.825 kilograms

The Blue DemonE71T-11X is a gasless flux core welding wire and regarded as one of the best in the market right now.It operates only on a straight polarity and should be used on Direct Current, Electrode Negative or DCEN.

The Blue Demon E71T-11X gets its name from the blue like appearance.  It is a self-shielding flux cored wire and does not require any sort of shielding gasses. The wire can be used in limited positions including multi-pass welding operations.

In terms of applications, the Blue Demon E71t-11X is often seen in butt, lap and fillet welds. It is usually seen on steel 16 gauges through ½”.  It can be used for welding carbon steels as well. Apart from that, assembly and maintenance welding of machine parts is often done with the help of the Blue Demon E71T-11X.

While it is said to be multi-pass, one can use the Blue Demon E71T-11X to arc on thicker materials and it will hold on its own. As it stands USA is one of the manufactures of the product.

As with most other flux core wires, this one also has a tensile strength of above 70000 PSI and it weighs 1 pound.

Almost everything about this flux core wire is great except for one single thing. It is priced quite high when you consider that you can find a lot of other wires in the market at ½ the price of the E71T. This may deter a lot of first time welders from buying this item partly because they may not be ready to spend so much money on the first try.

Highlighted Features

1. Does not need any shielding gas

2. Can be used to arc on thick materials such as carbon.

3. It is very light, standing at a mere 1 pound.

4. Blue Demon 308LFC-O | Best Flux Core Welding Wire

Blue Demon 308LFC-O X .035 X 1# Spool stainless steel flux cored gasless welding wire
  • It may be used for welding all 300 series stainless up to and including 308L
  • It can be used for welding 430 stainless

If you are looking for a flux core wire that can be used for welding practically at anything then the Blue Demon 308LFC-O should be your choice. Often regarded as the number one choice for flux core welding wire, it can be used for welding all 300 series stainless. This goes up to 308L.

The Blue Demon 308LFC-O can also be used to weld 430 stainless. It is gasless meaning there is no requirement for shielding gas to be used.

It runs on a current DCEP. The official weight of the Blue demon 308LFC-O is 1.1.4 pounds.  Its size is 0.035.

It cannot weld aluminum just like all other flux core wires. It is compatible with the Century FC90 welder and will let you weld thinner SS metals.

If you really want to see some great results, then use this by increasing the voltage and then turn down the wire speed. Doing so will allow you to weld pipes and brackets as well as any scrap metal.

Even though it is considered as one of the top flux core wire in the market right now, getting used to it may take a while. If you are new to welding or flux core wires in general then it would be wise to avoid using it.

This is because the Blue Demon 308LFC-O requires getting used to the right size of the wire for welding. It is also not the most users friendly in terms of giving the best looking arc. So amateur welders will have a hard time coping with it.

Highlighted Features

1. Gasless so no shielding gas required.

2. Can weld all 300 series stainless and above.

3. Increasing the voltage will allow you to weld numerous metals.

5. Hobart H222106-R19 | The Best Flux Cored MIG Wire

Hobart H222106-R19 2-Pound E71T-11 Carbon-Steel Flux-Cored Welding Wire, 0.030-Inch
  • Particularly On Thin-gauge Mild Or Galvanized Steel
  • Great In Single- Or Multi-pass Welds

When you are talking about flux cored MIG wires then one must mention the Hobart H222106-R19. It is made of carbon steel. It is a great gasless flux core wire, measuring at just 0.030 inch.

This particular flux core wire is made of carbon steel material and weighs about 2 pounds.

What make it so great? Well the Hobart H222106-R19 is great in both single as well as multi pass welds. It works well especially on thin gauge mild steel and galvanized steel too.

In terms of applications, the Hobart H222106-R19 is used in light structural, machinery fabrication.  It is also used in prefab constructions, rail road car repairs, tanks and other sort of general fabrication.

It runs on Direct Current, Electrode Negative [DCEN] on a singular polarity. It contains a tensile strength of 72000 PSI.

At only $18.99, the Hobart H222106-R19 is one of the cheaper options you can find in the market. This makes it great for people who are on a budget or just started welding.It is highly compatible with MIG welders.

Highlighted Features

1. Made of carbon steel material.

2. It is gasless meaning no gas shielding is needed.

3. Works well in both single and multi pass welds.

4. Cheaper than most other flux core wires of the same quality.

What To Look For When Buying Flux Core Wire?

Now before you walk into the nearby hardware store and start looking for a flux core wire, you need to know that there are different types of flux core wires. Some of them are made from different brands. Each one of them contains different characteristics.

While it is a good thing to have a wide variety, one has to look for some basic components which make these flux core wires the perfect for your use. With that being said listed below are three of the qualities you should keep in buying when buying these wires.

Tensile Strength

When buying a flux core wire it is important to check out the tensile strength of that particular wire. As mentioned earlier, there are different types of flux core wire and each of them has a different tensile strength. So it becomes an important factor to check what your item is rated at.

The tensile strength will determine how much load your wires are capable of withstanding when it is being stretched. This basically depends on what kind of work you plan on doing with the core wires.

In most case the minimum rating of tensile strength is rated at 70,000 PSI. This is basically the standard one should maintain or check before buying any flux core wire.

Shielding Gas

The next thing one has to check before making any purchases of flux core wire is the shielding gas of the wires. Normally there are two types of flux core wires; one of them shields gas while the other one does not shield any gas.

Once again the decision to buy gas shielded or non-gas shielded has to be made by you depending on what kind of work you plan on doing.

If you decide to go with non-gas shielded then there isn’t much to decide. However, if you choose the gas shielded flux core wire then there needs to be a little more decision making to be made.

Gas shielded core wire have different types of gas they shield. This includes CO2 or carbon dioxide. There is also AR and CO2 together.

Using a CO2 basically gives you better and deeper penetration of the object you are welding. On the other hand a mixture of argon/CO2 gives you a good arc quality, less splatter but it will provide less penetration.


As is the case with almost every product you buy, performance is a key indicator before making any purchases. And once again this will be dependent on the purpose of these flux core wire.

Performance of the wires is crucial because you would always want something that is always giving you the highest output. You cannot exactly determine the performance of the wire you are about to purchase without actually trying them out. However, you can always do a little bit of research on your own with the brand you are option for.

This way you will be prepared for the kind of result you can expect.


One thing we have repeatedly mentioned earlier on is that the purpose of the flux core wire is important when making a decision before buying it. This is because there is a wide variety of flux core wire in the market.

Different kind of flux wire cores are needed for outdoor welding projects. Some are required for applications such as steel structures, while others are used in ship building or the building of bridges. Home owners may want to use them for home improvement projects too.

As a result it is of utmost importance to convey your need and where you want to use the flux core wire to the salesman so that you can buy the appropriate item.

This way not only will you be saving money and not buying unnecessary wire but your welding will be fruitful too.

 With all that being said, we listed below are some of our top picks when it comes to finding to the perfect flux cored wire.

Final Verdict

As we keep mentioning, there are a lot of flux core wire in the market and it can very difficult to find the correct one if you do not have sufficient information.

We have compiled a list of the best flux core wire here that considers all the things one has to consider when making a purchase. This includes the Tensile Strength, the performance of the said wire as well as the application.

Keep in mind that the application is very important as not everyone will buy the flux core wire for the same purpose. Once you get an idea of what or where you will these wires you can consider the other two factors before finally making the call on your purchase.

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