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What is SG2 welding wire? A guide for welders.

Posted on: 10/30/2025

SG2 welding wire is one of the most commonly used consumables for MIG/MAG welding. Chosen by both professional manufacturing plants and hobby workshops, it combines high quality, versatility, and an attractive price. If you are looking for a wire that performs well when welding low-carbon and low-alloy steels, SG2 wire is an ideal choice.

What does the SG2 designation mean?

The SG2 symbol refers to the chemical composition of the welding wire according to the EN ISO 14341-A standard. This wire contains increased levels of manganese and silicon, which improves weld quality, joint strength, and the stability of the welding process.

What is SG2 wire used for?

SG2 wire is intended for welding:

  • low-carbon steels,
  • low-alloy steels,
  • structural and general construction steels.

It is most commonly used in industries such as:

  • steel construction,
  • automotive industry and vehicle repair,
  • fabrication of steel structures,
  • industrial service and maintenance.

Which welding process is SG2 used for?

SG2 wire is designed for MIG/MAG welding:

  • with CO2 shielding gas,
  • with Ar/CO2 mixed shielding gas.

Welding with mixed gas provides a more stable arc and better weld appearance, while pure CO2 is more economical, although it produces slightly more spatter.

SG2 welding wire — key advantages

  • Versatility — wide application in industry and workshops.
  • Good weld quality — strong and durable joints.
  • Low spatter — cleaner work area and better productivity.
  • Easy wire feeding — smooth feeding and a stable arc.
  • Good arc ignition characteristics — high process stability.

SG2 wire: copper-coated or non copper-coated (blank)?

SG2 wire is available in two versions: copper-coated and non copper-coated (blank). Each has its own characteristics:

Wire type Characteristics
Copper-coated SG2 An additional copper coating improves conductivity and protects the wire against corrosion.
Non copper-coated SG2 (blank) More eco-friendly, less fume, reduced contact tip wear, stable arc.

More and more welders choose non copper-coated wires due to their cleaner process, longer consumable life, and lower environmental impact.

When is it worth choosing SG2 wire?

This type of wire is an excellent choice if:

  • you weld structural steel,
  • you need a universal consumable,
  • you want a clean and visually appealing weld,
  • you are looking for an economical and durable solution.

Summary

SG2 welding wire is a versatile and efficient consumable that allows you to achieve high-quality welds in structural and low-alloy steels. It features a stable arc, low spatter, and good welding productivity. Depending on your needs, you can choose a copper-coated version or a modern, eco-friendly non copper-coated variant.

If you are looking for SG2 wire for your workshop or business, check our offer and choose a proven product that ensures reliability and excellent welding results.

SG2 welding wire is one of the most commonly used consumables for MIG/MAG welding. Chosen by both professional manufacturing plants and hobby workshops, it combines high quality, versatility, and an attractive price. If you are looking for a wire that performs well when welding low-carbon and low-alloy steels, SG2 wire is an ideal choice.

What does the SG2 designation mean?

The SG2 symbol refers to the chemical composition of the welding wire according to the EN ISO 14341-A standard. This wire contains increased levels of manganese and silicon, which improves weld quality, joint strength, and the stability of the welding process.

What is SG2 wire used for?

SG2 wire is intended for welding:

  • low-carbon steels,
  • low-alloy steels,
  • structural and general construction steels.

It is most commonly used in industries such as:

  • steel construction,
  • automotive industry and vehicle repair,
  • fabrication of steel structures,
  • industrial service and maintenance.

Which welding process is SG2 used for?

SG2 wire is designed for MIG/MAG welding:

  • with CO2 shielding gas,
  • with Ar/CO2 mixed shielding gas.

Welding with mixed gas provides a more stable arc and better weld appearance, while pure CO2 is more economical, although it produces slightly more spatter.

SG2 welding wire — key advantages

  • Versatility — wide application in industry and workshops.
  • Good weld quality — strong and durable joints.
  • Low spatter — cleaner work area and better productivity.
  • Easy wire feeding — smooth feeding and a stable arc.
  • Good arc ignition characteristics — high process stability.

SG2 wire: copper-coated or non copper-coated (blank)?

SG2 wire is available in two versions: copper-coated and non copper-coated (blank). Each has its own characteristics:

Wire type Characteristics
Copper-coated SG2 An additional copper coating improves conductivity and protects the wire against corrosion.
Non copper-coated SG2 (blank) More eco-friendly, less fume, reduced contact tip wear, stable arc.

More and more welders choose non copper-coated wires due to their cleaner process, longer consumable life, and lower environmental impact.

When is it worth choosing SG2 wire?

This type of wire is an excellent choice if:

  • you weld structural steel,
  • you need a universal consumable,
  • you want a clean and visually appealing weld,
  • you are looking for an economical and durable solution.

Summary

SG2 welding wire is a versatile and efficient consumable that allows you to achieve high-quality welds in structural and low-alloy steels. It features a stable arc, low spatter, and good welding productivity. Depending on your needs, you can choose a copper-coated version or a modern, eco-friendly non copper-coated variant.

If you are looking for SG2 wire for your workshop or business, check our offer and choose a proven product that ensures reliability and excellent welding results.