SIFTIG Mild Steel Welding Rods

The correct filler rod depends on the parent material, its surface condition and the mechanical properties required from the finished weld. For most fabrication work, standard mild steel filler rods provide excellent results.

ER70S-2 contains additional deoxidising elements, making it well suited to welding steels with light mill scale or minor contamination. ER70S-6 is commonly selected for clean mild steel and general fabrication.

Choose ER70S-2 when welding material that isn't perfectly clean or where additional deoxidisers help produce sound welds with reduced porosity.

The correct diameter depends on the material thickness, welding current and joint design. Using the appropriate rod diameter improves weld pool control and overall weld quality.

Yes. Matching the filler rod to the parent material helps achieve the required weld strength, ductility and mechanical performance.

Porosity is commonly caused by contamination, poor shielding gas coverage, moisture or an unsuitable filler rod for the application.

Cracking may result from contamination, incorrect filler rod selection, excessive restraint or unsuitable welding procedures.

Store filler rods in a clean, dry environment and protect them from moisture, oil and dirt to maintain weld quality.

Mild steel TIG filler rods are widely used in fabrication, motorsport, pipework, maintenance, agricultural engineering, structural work and precision manufacturing.

Before selecting a mild steel TIG filler rod, identify: What grade of steel is being welded? Is the material clean or does it have mill scale? What weld strength is required? What material thickness am I welding? Are there any welding procedure specifications that need to be followed? Answering these questions will help you select the most suitable mild steel TIG filler rod for the application.