Overview
EN ISO/ASTM 52908:2023 - titled Additive manufacturing of metals - Finished part properties - Post-processing, inspection and testing of parts produced by powder bed fusion - specifies requirements for qualification, quality assurance, post‑processing, inspection and testing of metal parts made by powder bed fusion (PBF). Published by CEN as a harmonized European adoption of ISO/ASTM 52908:2023, the document is intended for part providers and customers to define and demonstrate finished part properties and to support production to defined quality levels. It references testing and qualification in accordance with ISO/ASTM 52927 (categories H and M).
Key Topics and Requirements
- Qualification and documentation: Requirements for part validation, facility and process documentation, subcontractor records and quality assurance documentation to demonstrate conformance to defined quality levels.
- Post‑processing: Guidance on typical post‑build activities including thermal treatments (stress relief, annealing, aging, densification), separation from build platforms and supports, and surface finishing operations with considerations for machining allowances.
- Inspection and testing: Comprehensive methods for evaluating finished part properties, including:
- Metallurgical testing (microstructure, chemical analysis, non‑metallic inclusion assessment)
- Material testing (density measurement - Archimedean and image analysis, specimen selection and orientation)
- Mechanical testing (static and dynamic testing considerations)
- Surface quality inspection, geometrical inspection (form, dimensions, tolerances), and non‑destructive testing (NDT)
- Test specimen handling: Requirements for test specimen selection, preparation, orientation in the build space and surface condition to ensure representative results.
- Quality levels and qualification procedures: Defined approaches to qualify parts and processes to meet customer or regulatory quality requirements.
Applications
- Ensures consistent finished part properties for industrial metal additive manufacturing using powder bed fusion.
- Applicable for aerospace, medical, automotive and industrial suppliers producing load‑bearing or safety‑critical metal parts that require documented post‑processing and traceable inspection/testing.
- Used by: additive manufacturing service providers, OEMs procuring AM parts, quality engineers, metallurgists, inspection labs and certification bodies.
Related Standards
- ISO/ASTM 52927 (referenced for categories H and M qualification)
- EN ISO/ASTM 52908:2023 is part of the ISO/ASTM suite of standards supporting additive manufacturing process control, qualification and part quality assurance.
Keywords: additive manufacturing, powder bed fusion, post‑processing, inspection, testing, metal parts, ISO/ASTM 52908, qualification, quality assurance, finished part properties.