Scope

SN EN ISO 5817:2023 provides comprehensive guidelines for assessing the quality of imperfections in fusion-welded joints, excluding beam welding. It applies to materials such as steel, nickel, titanium, and their alloys with a thickness of 0.5 mm or more. This standard is crucial for ensuring the integrity and reliability of welded structures across various industries.

Applicability

The standard is applicable to non-alloy and alloy steels, nickel and nickel alloys, and titanium and titanium alloys. It covers manual, mechanized, and automatic welding processes and is relevant for all welding positions and types, including butt welds, fillet welds, and branch connections.

Key Requirements

SN EN ISO 5817:2023 outlines three quality levels for imperfections: B, C, and D. Level B represents the highest quality requirement, ensuring superior workmanship. The standard considers various load types, such as static, thermal, corrosion, and pressure loads, with additional guidance on fatigue loads provided in Annex B.

Common Pitfalls

Common pitfalls include misunderstanding the quality level requirements and applying the standard to inappropriate welding processes or materials. It is crucial to adhere to the specific welding processes outlined, such as metal arc welding without gas protection and gas-shielded arc welding.

How to Prepare

To comply with SN EN ISO 5817:2023, manufacturers should ensure their welding processes align with the specified quality levels and processes. Training staff on the standard's requirements and conducting regular quality checks can help maintain compliance and ensure high-quality welding outcomes.