ISO 13919-2:2021 pdf download – Electron and laser-beam welded joints — Requirements and recommendations on quality levels for imperfections — Aluminium, magnesium and their alloys and pure copper. 1 Scope This document gives guidance on levels of imperfections in electron and laser beam welded joints in aluminium, magnesium and their alloys and pure copper. Three levels are given in such a way as to permit application for a wide range of welded fabrications. The levels refer to production quality and not to the fitness-for-purpose of the product manufactured. This document applies to electron and laser beam welding of: — aluminium...