Electron and laser-beam welded joints. Requirements and recommendations on quality levels for imperfections. Steel, nickel, titanium and their alloys
25.160.40 - Welded joints and welds
EN ISO 13919-1
Reemplaza a: BS EN ISO 13919-1:1997
This document gives requirements and recommendations on levels
of imperfections in electron and laser-beam welded joints in steel,
nickel, titanium and their alloys. Three levels are given in such a
way as to permit application for a wide range of welded
fabrications. Quality level B corresponds to the highest
requirement of the finished weld. The levels refer to production
quality and not to the fitness-for-purpose of the product
This document applies to electron and laser beam welding of:
steel, nickel, titanium and their alloys;
all types of welds welded with or without additional filler
materials equal to or above 0,5 mm thickness for electron
and laser beam welding.
The purpose of this document is to define the dimensions of
typical imperfections which can be expected in normal fabrication.
It can be used within a quality system for the production of welded
joints. It provides three sets of dimensional values from which a
selection can be made for a particular application. The quality
level necessary in each case is defined by the application standard
or the responsible designer in conjunction with the manufacturer,
user and/or other parties concerned. The quality level is expected
to be prescribed prior to the start of production, preferably at
the enquiry or order stage. For special purposes, additional
details may need to be prescribed.
When significant deviations from the joint geometries and
dimensions stated in this document are present in the welded
product, it is necessary to evaluate to what extent the provisions
of this document can apply.
Metallurgical aspects, e.g. grain size, hardness are not covered
by this document.
This document does not address the methods used for the
detection of imperfections. This document is directly applicable to
visual examination of welds and does not include details of
recommended methods of detection or sizing by other non-destructive
means. There are difficulties in using these limits to establish
appropriate criteria applicable to non-destructive testing methods,
such as ultrasonic, radiographic and penetrant testing, and they
can need to be supplemented by additional requirements for
inspection, examination and testing.
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