What type of wires are recommended for steel thicker than 18 gauge?

For steel thicker than 18 gauge, flux cored wires are the recommended choice due to their versatility and effectiveness in welding. Flux cored wires are designed to provide a continuous supply of shielding gas through their core, which helps to protect the weld from contamination during the welding process. This is particularly beneficial when working with thicker materials because it allows for deeper penetration and a more robust weld.

The design of flux cored wires also allows for higher welding speeds and can be used in various positions, which is crucial when dealing with thicker steel. Unlike solid wires, which may require a separate shielding gas, flux cored wires generate their own shielding, making them more adaptable to outdoor environments or where wind might be a factor.

Additionally, flux cored wires are capable of producing welds that are more forgiving to variations in technique and can be used with different welding machines, making them a preferred option for many applications involving thicker steel. This blend of characteristics makes flux cored wires particularly suited for tasks that require strength and durability in the weld joint.