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ISO 5817:2023

Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) — Quality levels for imperfections

Edition date: 2023-02-24
In Force
Available languages: French, English
Summary:

This document specifies quality levels of imperfections in fusion-welded joints (except for beam welding) in all types of steel, nickel, titanium and their alloys. It applies to material thickness ≥ 0,5 mm. It covers fully penetrated butt welds and all fillet welds. Its principles can also be applied to partial-penetration butt welds.

Quality levels for beam-welded joints in steel are presented in ISO 13919-1.

Three quality levels are given in order to permit application to a wide range of welded fabrication. They are designated by symbols B, C and D. Quality level B corresponds to the highest requirement on the finished weld.

Several types of loads are considered, e.g. static load, thermal load, corrosion load, pressure load. Additional guidance on fatigue loads is given in Annex B.

The quality levels refer to production and good workmanship.

This document is applicable to:

a)       non-alloy and alloy steels;

b)       nickel and nickel alloys;

c)        titanium and titanium alloys;

d)       manual, mechanized and automatic welding;

e)       all welding positions;

f)         all types of welds, e.g. butt welds, fillet welds and branch connections;

g)       the following welding processes and their sub-processes, as defined in ISO 4063:

—     11 metal arc welding without gas protection;

—     12 submerged arc welding;

—     13 gas-shielded metal arc welding;

—     14 gas-shielded arc welding with non-consumable tungsten electrode;

—     15 plasma arc welding;

—     31 oxyfuel gas welding (for steel only).

Metallurgical aspects, such as grain size and hardness, are not covered by this document.



Le présent document spécifie les niveaux de qualité par rapport aux défauts dans les assemblages soudés par fusion (à l’exclusion du soudage par faisceau) sur tous types d’acier, de nickel, de titane et leurs alliages. Il s’applique à des épaisseurs de matériau ≥ 0,5 mm. Il couvre les soudures bout à bout à pleine pénétration et toutes les soudures d’angle. Ses principes peuvent également s’appliquer aux soudures bout à bout à pénétration partielle.

Les niveaux de qualité pour les assemblages en acier soudés par faisceau sont présentés dans l’ISO 13919-1.

Trois niveaux de qualité sont donnés dans le but de permettre son application à une large gamme de fabrications soudées. Ils sont désignés par les symboles B, C et D. Le niveau de qualité B correspond à l’exigence la plus élevée pour la soudure terminée.

Plusieurs types de charge sont pris en compte, par exemple la charge statique, la charge thermique, la corrosion, la pression. Des lignes directrices supplémentaires sur les charges de fatigue sont données à l'Annexe B.

Les niveaux de qualité concernent la fabrication et la qualité du travail.

Le présent document est applicable:

a)       aux aciers alliés et non alliés;

b)       au nickel et à ses alliages;

c)        au titane et à ses alliages;

d)       au soudage manuel, mécanisé et automatique;

e)       à toutes les positions de soudage;

f)         à tous les types de soudures, par exemple soudures bout à bout, soudures d’angle et piquages;

g)       aux procédés de soudage suivants et à leurs sous-catégories, comme définies dans l’ISO 4063:

—     11 soudage à l’arc avec électrode fusible sans protection gazeuse;

—     12 soudage à l’arc sous flux (en poudre);

—     13 soudage à l’arc avec électrode fusible sous protection gazeuse;

—     14 soudage à l’arc avec électrode réfractaire sous protection gazeuse;

—     15 soudage plasma;

—     31 soudage oxygaz (pour acier uniquement).

Le présent document ne traite pas des aspects métallurgiques, tels que la grosseur de grain ou la dureté.
ICS: 25.160.40-Welded joints and welds
CTN: ISO/TC 44/SC 10 - 48650

Standards Cancellations

Anula a ISO 5817:2014

International Equivalence

Identic UNE-EN ISO 5817:2023

Normas Conjuntas

Trabajo conjunto ISO/IEC TS 21544:2018

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