• How to choose the electrode according to the characteristics of each model ?

Strength comes first; while selecting the proper electrode, the electrode’s mechanical properties and chemical composition have to match the base metal.

Join design and joint position is essential in the selection of the electrode. Power source availability is another factor to consider; some electrodes can be used with AC or DC current, while others can be used with either AC or DC.

When deep penetration is required for the root pass, E 6010 or E 6011 will be the selection for providing welding with sufficient penetration. However, when the joint is wide root openings or thin material, the option will be E 6013.

For welding thick sections, or for application where toughness and high ductility joint is demanded or where the development of embrittlement cracking is an issue, E 7018 is usually the proper selection.

When considering productivity for flat or horizontal joints, E7024 is the option that offers higher deposition rates.