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Best Mig Wire For Mild Steel (2024 Update)

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If you’re looking for the best mig wire for mild steel, there are a few factors to consider before making a purchase. First and foremost, it’s important to determine the thickness of the steel you will be welding. Thinner mild steel will require a lower voltage setting and a smaller diameter wire, while thicker steel will require a higher voltage setting and a larger diameter wire. Another factor to consider is the gas mixture being used – a 75/25 argon/CO2 blend is recommended for mild steel welding.

When choosing the best mig wire for mild steel, it’s important to look for a wire that provides good penetration and produces minimal spatter. The wire should also be compatible with your welding machine and the gas mixture you’re using. Some other features to consider include the wire’s durability and resistance to rust and corrosion.

Are you tired of dealing with excessive spatter and inconsistent welds? Do you want to improve your welding game and produce high-quality welds on mild steel? Look no further than the best mig wire for mild steel. With the right wire size and gas mixture, you can achieve strong welds with minimal mess and downtime. Are you ready to take your welding skills to the next level? Invest in the best mig wire for mild steel today.

10 Best Mig Wire For Mild Steel

# Product Image Product Name Product Notes Check Price
1
It is ideal for MIG welding mild steel materials with a thickness range of 18 gauge to 1/2".
2
The welding wire is ideal for mild steel and is coated with copper, making it a great choice for welding.
3
The product is ideal for mild steel MIG welding with 0.030" (0.8mm) wire diameter on an 8"-roll spool.
4
This welding wire is ideal for mild and low alloy steel MIG welding.
5
Ideal for welding mild steel with a flux core and MIG wire, weighing 2 pounds per spool.
6
This welding wire is ideal for use with mild steel in MIG welding, producing high-quality welds.
7
This product is ideal for welding mild steel with a flux core and is sold on a 10-pound spool.
8
Ideal for gasless flux-cored mild steel MIG welding with a 0.030" (0.8mm) wire diameter and 10-lb spool.
9
This product is ideal for welding mild steel with a wire feeder in industrial or personal settings.
10
The product is ideal for welding mild steel with a wire diameter of .035 inches on a 33-pound spool.
It is ideal for MIG welding mild steel materials with a thickness range of 18 gauge to 1/2".
The welding wire is ideal for mild steel and is coated with copper, making it a great choice for welding.
The product is ideal for mild steel MIG welding with 0.030" (0.8mm) wire diameter on an 8"-roll spool.
This welding wire is ideal for mild and low alloy steel MIG welding.
Ideal for welding mild steel with a flux core and MIG wire, weighing 2 pounds per spool.
This welding wire is ideal for use with mild steel in MIG welding, producing high-quality welds.
This product is ideal for welding mild steel with a flux core and is sold on a 10-pound spool.
Ideal for gasless flux-cored mild steel MIG welding with a 0.030" (0.8mm) wire diameter and 10-lb spool.
This product is ideal for welding mild steel with a wire feeder in industrial or personal settings.
The product is ideal for welding mild steel with a wire diameter of .035 inches on a 33-pound spool.

1. Weldingcity Mild Steel Mig Welding Wire Er70s-6 11-Lb Roll 0.035" (0.9mm) 8"-Spool

Introducing the premium quality mild steel gas-shielding MIG welding wire ER70S-6, now available in an 11-lb spool. This copper coated welding wire is perfect for GMAW welding process with shielding-gas CO2 or Ar/CO2 mixed gas. Conformed to AWS A5.18/ASME SF A5.18/ER70S-6, this welding wire is of high quality and is sure to meet your welding needs.

The spool weighs 11-lbs with a net weight of welding wire, and has an 8-in spool with a 2-in center hole. The spool is wrapped in moisture-resistant plastic film to protect it from moisture and ensure its longevity.

This welding wire comes in four different wire diameters to suit your needs. These diameters include 0.023" (0.6mm), 0.030" (0.8mm), 0.035" (0.9mm), and 0.045" (1.2mm).

The product has a typical element content (wt%) that includes C=0.08; Mn=1.89; Si=0.83; S=0.019; P=0.021; Cu=0.24; Fe=balance. These parameters ensure the high quality of the welding wire.

This welding and hardware supplier is based in the U.S. and provides strong technical support with experienced customer service to address any questions or concerns you may have.

2. Superarc L-56 Copper Coated Welding Wire

Looking for a welding wire that can handle metals with a medium to high presence of millscale? Look no further than this top-quality product, featuring a 0.025 in. diameter wire that's designed to provide excellent results every time. Whether you're working on a professional welding project or simply looking to make some repairs around the house, this wire is sure to deliver the performance you need.

One of the key benefits of this welding wire is its ability to work well on metals that have a significant amount of millscale present. This makes it an ideal choice for a variety of welding applications, from automotive repairs to industrial fabrication. And because it's made from high-quality materials, you can count on it to provide consistent results over time.

To get the best possible performance from this welding wire, it's important to use it on clean, oil-free, and rust-free base materials. This will help ensure that the wire can bond properly with the metal, providing a strong and lasting weld that can stand up to even the toughest conditions. So if you're looking for a reliable and effective welding wire that can help you get the job done right, be sure to give this product a try today!

3. Mighty Mig Duo For Stronger Welds

This premium quality mild steel gas-shielding MIG welding wire is a great option for those who require the highest level of performance and durability. The package includes two rolls of 11-lb spool wire that is copper-coated for use in the GMAW welding process with shielding-gas CO2 or Ar/CO2 mixed gas.

The wire diameters available are 0.023" (0.6mm), 0.030" (0.8mm), 0.035" (0.9mm), and 0.045" (1.2mm), making it easy to find the perfect size for your welding needs. The wire conforms to AWS A5.18/ASME SF A5.18/ER70S-6 standards, ensuring high quality and reliability for every use.

The 11-lb weight of welding wire is conveniently wrapped in moisture-resistant plastic film and is presented on an 8-inch spool with a 2-inch center hole. This product is designed and produced by a U.S.-based welding and hardware supplier that provides strong technical support with experienced customer service to address any buyer's questions.

The typical element content (wt%) in the product includes C=0.08, Mn=1.89, Si=0.83, S=0.019, P=0.021, Cu=0.24, and Fe=balance. With this welding wire, you can expect excellent performance, durability, and reliability.

4. Er70s-6 – Mig Mild & Low Alloy Steel Welding Wire – 33 Lb X 0.035"

If you're looking for a reliable welding wire, the ER70S-6 is a great option. This copper-coated mild steel GMAW (MIG) wire is suitable for single or multiple pass welding and is the most commonly used wire of its kind. Before purchasing, it's important to check the dimensions shown on picture #2 to ensure that the spool will fit your welding equipment.

ER70S-6 has a unique combination of manganese and silicon deoxidizers, which allows for higher welding currents with 100% CO2 and CO2/Argon Mix shielding gases. This results in a smoother weld bead with little to zero post-weld cleanup. The wire is also copper-plated and layer wound, making it especially well-suited for sheet metal applications or structural plate steels that have moderate amounts of rust oil or mill scale on them.

This welding wire is commonly used for construction work, farm implement fabrications, and general shop applications with poor fit-up or rusty, oily plates, tanks, steel castings, or forgings. It's available in diameters of 0.023", 0.030", 0.035", and 0.045", and comes in spool weights of 33 and 44 pounds. Simply select the appropriate diameter and spool weight from the menu when making your purchase.

5. Forney 42300 Flux Core Mig Wire, Mild Steel E71tgs.030-Diameter, 2-Pound Spool, Silver, Pack Of 1

The all-position flux core MIG wire for mild steel is a reliable and self-shielded welding option that performs exceptionally well on rusty, dirty, and even painted materials. This high-quality wire is designed to be best suited for single-pass applications with a high travel speed, making it an excellent choice for welders who are looking for a wire that runs hotter than solid wires.

One of the standout features of this flux core MIG wire is its ability to perform exceptionally well in outdoor, windy conditions. This means that welders can rely on this wire to deliver consistent and reliable performance even when working in less-than-ideal conditions.

To access the full catalog of welding supplies and tools from Forney, simply click on the "BY FORNEY" name above in blue located under the product title. Forney is a trusted name in the welding industry, known for their high-quality products and commitment to customer satisfaction.

6. Weldingcity Mild Steel Mig Welding Wire Er70s-6 30-Lb Roll 0.030" (0.8mm) 12"-Spool

Introducing a premium quality mild steel gas-shielding MIG welding wire ER70S-6, available in 30-lb and 33-lb spools. This copper-coated welding wire is designed for the GMAW welding process with shielding-gas CO2 or Ar/CO2 mixed gas.

This welding wire conforms to the industry standards of AWS A5.18/ASME SF A5.18/ER70S-6 and is available in 30-lb or 33-lb net weight of welding wire, on a 12-inch steel spool. The spool is carefully wrapped in a moisture-resistant plastic bag to ensure its longevity.

This welding wire is available in four different diameters: 0.023" (0.6mm), 0.030" (0.8mm), 0.035" (0.9mm), and 0.045" (1.2mm), giving you a range of options to choose from.

The typical element content (wt%) in this product is as follows: C=0.08; Mn=1.89; Si=0.83; S=0.019; P=0.021; Cu=0.24; Fe=balance.

This welding wire is supplied by a U.S. based welding and hardware supplier who is committed to providing strong technical support with experienced customer service to address any questions buyers may have.

7. Forney 42303 Flux Core Mig Wire, Mild Steel E71tgs.035-Diameter, 10-Pound Spool

The all-position flux core MIG wire for mild steel is a highly efficient product that boasts of its self-shielded feature, making it ideal for use on rusty, dirty, and even painted materials. It is specifically designed for single pass applications that require high travel speed, making it the perfect solution for welding in a time-efficient manner.

This MIG wire is also known for its ability to operate effectively in outdoor windy conditions, which is a major advantage for those who frequently work in such environments. While it does not require any gas, incorporating an Argon/CO2 mix is highly recommended to reduce spatter.

Moreover, this product runs hotter than solid wires, making it an excellent option for welding 18-gauge mild steel or thicker. Its versatility and ease of use make it a preferred choice for welders of all levels of expertise.

In terms of specifications, this all-position flux core MIG wire for mild steel is packed with features that ensure optimal performance. Its parameters and specifications have been carefully crafted to meet the highest industry standards, ensuring that it delivers consistent and reliable results every time it is used.

8. Mighty Mig Pro: Gasless Mild Steel Wire Combo

This gas-less E71T-GS flux-cored (FCW) mild steel MIG welding wire is a premium quality choice for welding enthusiasts and professionals alike. The 10-lb roll conforms to AWS A5.20/ASME SF A5.20/E71T-GS standards and is an excellent option for those seeking high-quality welding wire.

The 10-lb weight of welding wire comes on an 8-inch spool with a 2-inch center hole, making it compatible with a wide range of welding machines. The typical deposited metal chemical composition is %: C=0.20, Si=0.32, Mn=0.77, P=0.011, S=0.002, Cr=0.01, Mo=0.01, Ni=0.01, Cu=0.01, V=0.002, Remain=Fe.

One of the most significant advantages of this welding wire is its self-shielded design, which eliminates the need for welding protection gases. This feature, combined with the wire's ability to perform single-pass fillet and lap welding, makes it a versatile tool for a range of welding applications.

The wire comes vacuum-sealed in aluminum foil packaging to ensure its quality and longevity. This packaging protects the wire from exposure to moisture and other environmental factors that can negatively impact its performance.

This welding wire is available in three different diameters: 0.030" (0.8mm), 0.035" (0.9mm), and 0.045" (1.2mm). It is also available in packs of 1 and 2 10-lb spools, with volume discounts available for those looking to purchase more.

9. Forney 42276 Mig Wire, Mild Steel Er70s-6.030-Diameter, 33-Pound Spool

This welding wire is designed to produce strong welds on dirty or rusty steel. It is copper-coated and contains high levels of manganese and silicon, which offer excellent cleaning action. The high silicon content provides fluidity of the weld puddle, resulting in a smoother bead appearance and minimizing the need for post-weld grinding.

The wire features a superior surface finish, making it easy to feed into the welding machine and providing excellent arc performance. It is ideal for butt and fillet welding of carbon steel sheet and plate in a variety of applications, including industrial, farm, construction, and automotive equipment.

It is important to note that this welding wire requires CO2 or Argon/CO2 shielding gas, which is not included. This product is the perfect choice for those seeking a reliable, high-quality welding wire that offers excellent performance and results.

10. Forney 42281 Mig Wire, Mild Steel Er70s-6.035-Diameter, 33-Pound Spool

This welding wire is designed to provide high-quality welds on dirty or rusty steel. It contains a significant amount of manganese and silicon, which makes it suitable for all positions. The high silicon content of this wire results in a smoother bead appearance and reduces the need for post-weld grinding.

The wire has a superior surface finish, which ensures excellent feed ability and arc performance. The increased manganese and silicon content of this wire provide excellent cleaning action. It is ideal for butt and fillet welding of carbon steel sheet and plate in various applications, including industrial, farm, construction, and automotive equipment.

To use this welding wire, you will need to purchase CO2 or Argon/CO2 shielding gas separately, as it is not included. This welding wire is a reliable and cost-effective option for anyone looking to achieve high-quality welds on dirty or rusty steel. It is suitable for use in all positions and is perfect for industrial, farm, construction, and automotive equipment applications. With its excellent cleaning action and smooth bead appearance, this welding wire is sure to provide excellent results every time.

Best Mig Wire For Mild Steel FAQs

Can flux-cored mig wire be used for welding mild steel?

Yes, flux-cored MIG wire can be used for welding mild steel. In fact, it is a popular choice for welding mild steel due to its versatility and ease of use. One of the benefits of using flux-cored MIG wire is that it allows for welding in various positions, including overhead welding. Additionally, the flux in the wire creates a shielding gas that protects the weld from contaminants and helps to produce a clean, smooth weld. However, it is important to note that different types of flux-cored MIG wire are designed for different applications and materials, so it is important to choose the appropriate wire for the job. It is also important to follow proper safety procedures when welding, including wearing protective gear and ensuring adequate ventilation in the workspace.

How do different types of mig wire perform when welding mild steel?

Different types of MIG wire can have varying performance when welding mild steel. The most common types of MIG wire are ER70S-3, ER70S-6, and ER70S-2. ER70S-3 is a lower cost option that provides a good weld, but may have more spatter than other types. ER70S-6 is the most commonly used type, as it provides a clean weld with minimal spatter and good penetration. ER70S-2 is a premium wire that provides the highest quality weld, with excellent penetration and minimal spatter.

In addition to the type of wire, the thickness of the wire can also affect performance. Thicker wire can provide more amperage and better heat distribution, allowing for faster welding speeds and deeper penetration. Thinner wire, on the other hand, can provide better control and precision for welding thinner materials.

Overall, the type of MIG wire used for welding mild steel will depend on the specific application and desired outcome. It is important to choose the right wire for the job to ensure a strong and reliable weld.

How does the quality of mig wire affect the strength of the weld on mild steel?

The quality of mig wire plays a crucial role in determining the strength of the weld on mild steel. It is important to select the right mig wire for the specific application to achieve optimal results. The quality of mig wire is determined by factors such as the chemical composition, the diameter of the wire, and the manufacturing process. A high-quality mig wire will have consistent chemical composition, which ensures uniformity in the strength and performance of the weld. The diameter of the wire also affects the strength of the weld, with thicker wires producing stronger welds. Additionally, the manufacturing process of mig wire determines its resistance to rust and corrosion, which can weaken the weld over time. Ultimately, using a high-quality mig wire ensures a strong and durable weld on mild steel, which is essential for ensuring the integrity and reliability of the finished product.

How long does mig wire for mild steel last?

The lifespan of mig wire for mild steel depends on several factors such as the quality of the wire, frequency of use, and the thickness of the material being welded. Typically, a spool of mig wire for mild steel can last for several weeks or months, depending on how often it is used. However, it is essential to keep the wire in a dry and clean place to prevent rust and contamination, which can affect its usability and lifespan. Moreover, the type of welding application can also affect the lifespan of the wire. For instance, welding thicker materials or using a higher voltage setting may require more wire, which can affect its lifespan. Therefore, it is crucial to monitor the consumption of mig wire and replace it when necessary to maintain the quality of the weld and ensure safety.

What brands of mig wire are recommended for welding mild steel?

When it comes to welding mild steel, there are several brands of MIG wire that are highly recommended by professionals. The most popular ones include Lincoln Electric, Hobart, Blue Demon, and Forney. These brands offer a wide range of MIG wires that are specifically designed for welding mild steel.

Lincoln Electric is a well-known brand that has been in the welding industry for over 100 years. Their MIG wires are known for their high quality and consistency, making them a popular choice for both beginners and professionals. Hobart is another reputable brand that offers a wide range of MIG wires for welding mild steel. Their wires are known for their excellent weldability and smooth arc.

Blue Demon is a relatively new brand that has gained popularity in recent years. Their MIG wires are known for their affordability and excellent performance. Forney is another brand that offers a range of MIG wires for welding mild steel. Their wires are known for their high strength and low spatter.

In conclusion, when choosing a MIG wire for welding mild steel, it is important to consider the brand's reputation, quality, and performance. The above-mentioned brands are all highly recommended and have proven to be reliable choices for welding professionals.

What diameter mig wire is best for welding mild steel?

When it comes to MIG welding mild steel, the most common diameters of wire used are 0.023", 0.030" and 0.035". The choice of wire diameter depends on the thickness of the metal being welded. For thinner metals, such as 24-gauge up to 3/16", a smaller diameter wire should be used. This is because a smaller wire diameter provides better control of the weld puddle and allows for easier out-of-position welding.

For thicker metals, such as 3/16" up to 1/2", a larger diameter wire should be used. This is because a larger wire diameter can deposit more weld metal per pass and provide faster travel speeds.

It is important to note that the wire diameter should also match the amperage range of the welding machine being used. It is recommended to consult the manufacturer's recommendations for the appropriate wire diameter and amperage range for the specific welding application.

What factors should be considered when selecting mig wire for welding mild steel?

When selecting MIG wire for welding mild steel, there are several factors that should be considered to ensure a successful welding process. Firstly, the thickness of the metal being welded should be taken into account, as this will determine the diameter of the wire that should be used. Thicker metal will require a larger diameter wire to ensure proper penetration and fusion.

Next, the type of shielding gas being used should be considered. CO2 is commonly used for mild steel welding, but a combination of CO2 and argon may be more suitable for certain applications. The manufacturer's recommendations should be followed to ensure proper gas selection.

The wire's classification should also be considered, as different classifications are designed for specific applications and metal thicknesses. For mild steel, ER70S-6 wire is commonly used.

Finally, the quality of the wire should be considered, as a high-quality wire will produce better results and reduce the risk of defects. It is important to purchase wire from a reputable supplier and to store it properly to prevent contamination and damage.

What is the best mig wire for welding mild steel?

When it comes to welding mild steel, it is important to choose the right mig wire to ensure a strong and durable weld. The most commonly used mig wire for welding mild steel is ER70S-6. This wire has a good combination of strength, ductility, and ease of use, making it a popular choice among welders.

ER70S-6 mig wire has a higher silicon and manganese content compared to other wires, which helps to produce a cleaner weld with less spatter. It also has a higher tensile strength, making it ideal for welding thicker sections of mild steel.

Other factors to consider when choosing mig wire include the diameter of the wire, the type of shielding gas used, and the welding position. It is important to follow the manufacturer's recommendations for the specific wire and welding conditions to ensure a successful weld.

Overall, ER70S-6 mig wire is a reliable and versatile option for welding mild steel, providing good strength and ease of use.

What is the cost of mig wire for welding mild steel?

The cost of mig wire for welding mild steel can vary depending on a few factors. Firstly, the thickness of the wire will affect the price, with thicker wires generally being more expensive. Additionally, the brand of mig wire and the quantity purchased can also impact the cost. On average, a 10lb spool of .030” diameter mig wire can cost anywhere from $20 to $50, with higher-end brands being on the higher end of the price range. It’s important to note that while it may be tempting to opt for the cheapest mig wire available, it’s often worth investing in a higher quality wire to ensure a stronger and more reliable weld. Ultimately, the cost of mig wire is a small price to pay for the important role it plays in creating a successful welding project.

What is the difference between ER70S-3 and ER70S-6 mig wire for mild steel?

ER70S-3 and ER70S-6 are both types of MIG welding wires used for welding mild steel. The major difference between these two wires is in their chemical composition, which affects the mechanical properties and the type of welding application they are best suited for.

ER70S-3 wire has a higher percentage of deoxidizers and provides better wetting action, making it ideal for welding on rusted or dirty steel surfaces. It also has a lower amount of silicon and manganese, which makes it less prone to cracking and porosity. This type of wire is most commonly used for welding thin-gauge mild steel, such as sheet metal.

On the other hand, ER70S-6 wire has a higher amount of silicon and manganese, which makes it more versatile and suitable for a wider range of welding applications. It provides a smoother and more stable arc, and produces less spatter compared to ER70S-3. ER70S-6 is ideal for welding thicker mild steel, such as structural steel, and is also suitable for welding on clean or lightly rusted surfaces.

In summary, the main difference between ER70S-3 and ER70S-6 MIG welding wires for mild steel is their chemical composition, with ER70S-3 having more deoxidizers and less silicon and manganese, while ER70S-6 has more silicon and manganese for a wider range of welding applications.

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