How many base metal groups can a welder be certified in?

A welder can be certified in 7 base metal groups. These groups are established to classify the various materials that metal fabricators commonly weld. Each group corresponds to a specific type of base metal, such as steel, aluminum, and others, and reflects the similarities in composition and properties of those metals related to the welding processes. Understanding and mastering the characteristics of these base metals is crucial for welders to ensure they can effectively perform different welding tasks while maintaining the integrity and strength of the weld.

The certification process typically involves demonstrating proficiency in working with each of these groups, which helps employers ensure that their welders are equipped with the necessary skills and knowledge to handle a variety of welding projects safely and effectively. This certification not only enhances a welder's employment prospects but also contributes to higher quality work in the field of metal fabrication.