SIST EN ISO 13919-1:2020 PDF

Overview - EN ISO 13919-1:2019

EN ISO 13919-1:2019, "Electron and laser‑beam welded joints - Requirements and recommendations on quality levels for imperfections - Part 1: Steel, nickel, titanium and their alloys", defines production‑level acceptance criteria for typical imperfections in electron‑ and laser‑beam welding. The standard provides three quality levels (with Level B being the most stringent) and gives dimensional limits for common weld imperfections to be used within manufacturing quality systems. It applies to all weld types (with or without filler) on steel, nickel, titanium and their alloys for material thicknesses ≥ 0.5 mm.

Key topics and technical requirements

• Three quality levels (D, C, B) offering graded acceptance limits so users can select requirements appropriate to the application and economics of manufacture.
• Dimensional limits for a range of beam‑welding imperfections (porosity, cracks, crater defects, incomplete fusion, etc.) presented in tabular form, referenced to ISO 6520‑1 designations.
• Scope of application: production quality of welded joints - the standard explicitly states these levels are not fitness‑for‑purpose criteria for the finished product.
• Visual examination focus: the document is directly applicable to visual inspection of welds. It does not specify detection or sizing methods for non‑destructive testing (NDT).
• Use with other standards: assessment methods are adapted to ISO 5817 and ISO 12932, and imperfections are referenced to ISO 6520‑1.
• Limitations: metallurgical properties (grain size, hardness) are not covered; NDT methods (ultrasonic, radiographic, penetrant) may require additional, supplementary criteria.

Practical applications

• Defining acceptance criteria in welding procedures, fabrication contracts and purchase orders for components made by electron or laser‑beam welding.
• Establishing inspection checkpoints and production quality plans in manufacturing and welding workshops.
• Guiding designers and application standard authors when specifying weld quality requirements for assemblies where beam welding is used.
• Supporting quality engineers and inspectors in preparing checklists for visual examination and in deciding when extra inspection or rework is needed.

Who uses this standard

• Weld designers and structural/mechanical engineers specifying joint quality
• Manufacturers and fabricators using electron or laser‑beam welding processes
• Quality managers, welding coordinators and visual weld inspectors
• Clients, procurement specialists and application standards committees

Related standards

• ISO 6520‑1 - Welding and allied processes: classification of imperfections
• ISO 5817 and ISO 12932 - referenced for assessment methodology and adaptation

EN ISO 13919‑1:2019 is CEN‑endorsed and supersedes the earlier EN ISO 13919‑1:1996 edition, providing an updated, practical reference for production acceptance of beam‑weld imperfections.