TIG welding mild steel requires a filler rod that is strong, ductile and easy to use. The best filler rod for mild steel TIG welding is ER70S-6. It is a mild steel filler rod that contains higher levels of manganese and silicon than other standard grades of filler rod, which helps remove impurities in the weld puddle and improves the strength and ductility of the weld. It is commonly used in the automotive and fabrication industries, and is the recommended choice for welding mild steel.
With so many filler rod for tig welding mild steel brands on the market like Kiswel, Generic, Hot Max, Blue Demon, it can be tough to know which one is right for you. Don’t worry, we’ve got you covered.1. KISWEL 2LBS ER70S-6 Mild Steel TIG Welding Fi
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- Premium Quality KISWEL ER70S-6 Mild steel alloy TIG welding rods 1/16″ x 36″ long.
- Specification: AWS A5.18/ASME SFA A5.18 ER70S-6 1/16″ X 36″(914mm).
- Typical Applications: For Welding of Structural Steels Machineries and Vehicles. Suitable for single-pass and multi-pass welding, Repairs on a variety of mild and low alloy steel such as vehicles, bridges, construction and mechanical structures etc., Small diameter pipe and tubing, Sheet metal applications , Root pass pipe welding.
- Package : Shrink Wrapped and Shipping Box.
- 2LBS 1/16″: 64 Rods
2. KISWEL ER70S-6 Mild Steel TIG Welding Filler
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- Premium Quality KISWEL ER70S-6 Mild steel alloy TIG welding rod 0.045″ x 36″ 5LBS
- Specification: AWS A5.18/ASME SFA A5.18 ER70S-6 0.045″x 36″ long rod with both ends stamped.
- For Welding of Structural Steels Machineries and Vehicles.
- Package : Plastic tube (Colors and Shapes Vary) and Shipping Box.
- 5LBS 0.045″: 313 Rods
3. ER70S-6 Mild Steel TIG Welding Filler Rod 0.0
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- Premium Quality ER70S-6 Mild Steel TIG Welding Rods1/16″ x36″ 2LBS
- Typical Applications: For Welding of Structural Steels Machineries and Vehicles. Suitable for single-pass and multi-pass welding, Repairs on a variety of mild and low alloy steel such as vehicles, bridges, construction and mechanical structures etc., Small diameter pipe and tubing, Sheet metal applications , Root pass pipe welding.
- Specification: AWS A5.18/ASME SFA A5.18/ER70S-6 36″ (914mm) long Rod with Both ends stamped.
- Package: Shrink wrapped and Shipping Box.
- 2LBS 1/16″: 64 Rods
4. Hot Max 24188 1/16-Inch ER70S-6 Mild Steel TI
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- For most types of mild steel
- Highly durable
- Highly fluid
- Highly resistant to corrosion
- 1/16-inch TIG filler
5. Blue Demon ER70S2 X 1/16″ X 36″ X 10LB Box pr
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- It is a triple deoxidized wire making it an excellent choice for welding over rust and mill scale
- No flux is required with this product
- The wire is available spooled or in cut length form
Best filler rod for tig welding mild steel Buying guide
When TIG welding mild steel, it is important to select the right filler rod. Mild steel filler rod is usually made of ER70S-3 or ER70S-6. ER70S-3 is an all-purpose filler rod that is most often used in welding mild steel and is the most popular of the two. It is a good choice for general welding purposes, especially when welding thicker materials. ER70S-6 has a higher manganese and silicon content, which allows it to better resist porosity. This makes it a good choice for welding thin material, and it is often used for sheet metal welding. The size of the filler rod should match the thickness of the material being welded. Generally, a rod with a higher diameter will provide a stronger weld and should be used for thicker materials. For thinner materials, a smaller diameter rod should be chosen. The length of the filler rod should also be taken into consideration. Shorter rods are better for welding thinner materials, while longer rods are better for thicker materials.