ISO 5817:2023
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Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) — Quality levels for imperfections
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02-24-2023
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≥0,5mm. 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 ISO13919-1.
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 AnnexB.
The quality levels refer to production and good workmanship.
This document is applicable to:
31 oxyfuel gas welding (for steel only).
Metallurgical aspects, such as grain size and hardness, are not covered by this document.
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