. It applies to both corrosion-resistant overlays and hardfacing. Key Features of EN ISO 15614-7
The standard specifies essential variables such as parent material, thickness, welding consumables, and heat input that, if changed, would require a new qualification. en iso 15614-7 pdf
The standard uses a grouping system for base materials. Qualification on one steel group qualifies you for similar groups, but with restrictions: and heat input that