BS EN ISO 10042:2005 should be used as a reference in drafting application codes and/or other application standards. It contains a simplified selection of arc welding imperfections based on the designations given in ISO 6520-1.
The purpose of this International Standard is to define the dimensions of typical imperfections which might be expected in normal fabrication. It may 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 should be defined by the application standard or the responsible designer in conjunction with the manufacturer, user and/or other parties concerned. The quality level will have to be prescribed before the start of production, preferably at the enquiry or order stage. For special purposes, additional details may to be prescribed.
The quality levels given in this International Standard provide basic reference data and are not specifically related to any particular application. They refer to the types of welded joint in fabrication and not to the complete product or component itself. It is possible, therefore, that different quality levels are applied to individual welded joints in the same product or component.
BS EN ISO 10042 specifies quality levels for imperfections in arc-welded joints in aluminium and its alloys. It applies to material thicknesses above 0,5 mm. It covers full-penetration butt welds and all fillet welds. The principles may also be applied to partial-penetration butt welds.
BS EN ISO 10042:2005 applies to:
- all types of weld, e.g. butt welds, fillet welds and branch connections
- the following welding processes and their sub-processes as defined in ISO 4063:
a. metal inert gas welding (MIG welding), gas metal arc welding /USA/
b. tungsten inert gas welding (TIG welding), gas tungsten arc welding /USA/
c. plasma arc welding
- manual, mechanized and automatic welding
- all welding positions.
Metallurgical aspects, e.g. grain size, hardness, are not covered by this International Standard.
BS EN ISO 10042:2005 replaces BS EN 30042:1994, which is withdrawn.