The standard provides guidelines on the welding of cast irons. Cast irons are a group of ferrous materials that contain a high amount of carbon (typically more than 2%) and possibly other alloying elements. Due to their composition, welding cast iron presents specific challenges, such as the formation of hard, brittle phases and the potential for cracking.

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This standard is critical for structural engineers, welding coordinators, and site supervisors because a failure in a load-bearing rebar weld can lead to catastrophic structural collapse.