If a buffer layer is used between dissimilar materials (e.g., ferritic steel and austenitic overlay), this must also be qualified, often in conjunction with ISO 15614-1. Accessing the PDF
When a manufacturer downloads or consults the EN ISO 15614-7 PDF, they are looking for the framework to prove that their welding process will result in a sound overlay. The standard dictates several critical testing requirements: en iso 15614-7 pdf
Standards are reviewed every 3 to 5 years. An old PDF you find online might be a withdrawn version. For example, the standard may have been updated to harmonize with newer materials or testing methods. Using an obsolete standard for a contract can lead to compliance failures. If a buffer layer is used between dissimilar materials (e