NF EN ISO 18279, A80-231 (11/2023)

This document describes in detail a classification of defects that can appear in assemblies made by brazing. Additionally, it provides a guide to quality levels and details suggested defect limits. For requirements not covered by this document, reference may be made to other sources, such as official regulations, codes of practice and technical delivery conditions. No information is provided on how the defects are to be assessed in each case, as this assessment depends on the requirements for the braze joint in question. These defects are not always detectable using non-destructive testing alone. This document only addresses defects related to brazing, and not additional service charges. Only the type, shape and position of such defects are addressed; no indication of the conditions or causes of occurrence is provided. For requirements relating to brazed joints which are of particular interest and which are essential for the functioning of the part, reference may be made to the corresponding documentation, for example manufacturing documents or procedures. It is important that these requirements are stated precisely and that compliance with these requirements is verifiable. Compliance may be established by testing either the brazed element itself or a test piece produced under comparable conditions. Requirements should be established and fully documented before any classification is undertaken. This document does not specify requirements for defect acceptance levels as these differ widely depending on the application, but it does suggest quality levels which may be useful if more information is not available. detailed.
(Automatic translation from French)