SIST EN ISO 10042:2018 PDF

Overview

EN ISO 10042:2018 (ISO 10042:2018) defines acceptance quality levels for imperfections in arc‑welded joints made from aluminium and its alloys. Applicable to material thicknesses > 0.5 mm, the document provides standardized dimensional limits and acceptance criteria for common imperfections found in production welding. It is intended as a reference for drafting application codes and for specifying production quality (not fitness‑for‑purpose) across a wide range of welded constructions.

Key topics

• Quality levels B, C and D: three graded acceptance levels (B = most stringent) to suit different fabrication and inspection needs.
• Types of welds covered: butt welds, fillet welds, branch connections and other joint forms.
• Welding processes: metal inert gas (MIG/GMAW), tungsten inert gas (TIG/GTAW) and plasma arc welding; applies to manual, mechanized and automatic welding in all positions.
• Imperfections addressed: dimensional limits for porosity, cracks, undercut, incomplete fusion/penetration and other typical arc‑welding defects (selection based on ISO 6520‑1 classifications).
• Inspection scope: directly applicable to visual testing of welds; correlation to other NDT methods (UT, RT, PT) requires additional reference (see ISO 17635).
• Normative references and annexes: references ISO 6520‑1 (classification of geometric imperfections) and includes informative annexes (e.g., percent porosity examples and user guidance).
• Limitations: does not cover metallurgical properties (grain size, hardness) or specify fitness‑for‑purpose - those are determined by the application standard, designer or purchaser.

Applications and users

EN ISO 10042:2018 is widely used for:

• Writing contractual or procurement acceptance criteria for aluminium fabrication.
• Establishing inspection and quality control plans in production welding.
• Guiding welding engineers, QA/QC inspectors and technicians on acceptable defect sizes.
• Assisting designers and specifiers in selecting appropriate production quality levels based on service conditions, loading and economics.

Typical users: welding engineers, fabrication shops, quality managers, inspection bodies and standards authors in industries working with aluminium structures and components.

Related standards

• ISO 6520‑1 - classification of geometric imperfections (normative reference).
• ISO 17635 - correlation between quality levels and non‑destructive testing methods.
• ISO 2553 - fillet weld throat definitions (referenced for dimensions).
• ISO 5817 - related defect descriptions used in welding standards.

EN ISO 10042:2018 helps organizations standardize acceptance of weld imperfections, streamline inspection criteria, and align production quality expectations across aluminium welding projects.