EN 25817:1992

EN 25817:1992 is a standard + national annex and/or foreword published by the European Committee for Standardization (CEN). Its full title is "Arc-welded joints in steel - Guidance on quality levels for imperfections (ISO 5817:1992)". This standard covers: This International Standard provides guidance on levels of imperfections in arc-welded joints in steel. 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 (see 3.1) of the product manufactured. This International Standard applies to: - unalloyed and alloyed steels; - the following welding processes and their defined sub-processes in accordance with ISO 4063: 11 metal-arc welding without gas protection; 12 submerged-arc welding; 13 gas-shielded metal-arc welding; 14 gas-shielded welding with non-consumable electrode; 15 plasma arc welding; - manual, mechanized and automatic processes; - all welding positions; - butt welds, fillet welds and branch connections; - materials in the thickness range 3 mm to 63 mm. When significant deviations from the joint geometries and dimensions described in this International Standard are present in the welded product, it is necessary to evaluate to what extent the provisions of this standard can apply. Metallurgical aspects, e.g. grain size, hardness, are not covered by this International Standard.

This International Standard provides guidance on levels of imperfections in arc-welded joints in steel. 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 (see 3.1) of the product manufactured. This International Standard applies to: - unalloyed and alloyed steels; - the following welding processes and their defined sub-processes in accordance with ISO 4063: 11 metal-arc welding without gas protection; 12 submerged-arc welding; 13 gas-shielded metal-arc welding; 14 gas-shielded welding with non-consumable electrode; 15 plasma arc welding; - manual, mechanized and automatic processes; - all welding positions; - butt welds, fillet welds and branch connections; - materials in the thickness range 3 mm to 63 mm. When significant deviations from the joint geometries and dimensions described in this International Standard are present in the welded product, it is necessary to evaluate to what extent the provisions of this standard can apply. Metallurgical aspects, e.g. grain size, hardness, are not covered by this International Standard.

EN 25817:1992 is classified under the following ICS (International Classification for Standards) categories: 25.160.40 - Welded joints and welds. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 25817:1992 has the following relationships with other standards: It is inter standard links to EN ISO 5817:2003, EN 13218:2002+A1:2008, EN ISO 9606-4:1999, EN 12063:1999. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 25817:1992 is associated with the following European legislation: EU Directives/Regulations: 87/404/EEC; Standardization Mandates: M/BC/CEN/89/2. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

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