Overview
EN ISO/ASTM 52904:2024 - Additive manufacturing of metals - Process characteristics and performance - Metal powder bed fusion process to meet critical applications - provides requirements and guidance for operating and controlling metal Powder Bed Fusion (PBF) machines and processes when producing parts for critical applications (where part failure can cause immediate threats). Approved by CEN in July 2024 and superseding the 2020 edition, the standard applies to PBF using laser and electron beams and covers production of both parts and mechanical test specimens.
Key topics and technical requirements
The standard addresses the full PBF process chain with emphasis on process control, qualification, and documentation. Main technical topics include:
- Personnel requirements: competency and role responsibilities for safe, qualified AM production.
- Digital data: digital records, data processing and traceability for design files and build parameters.
- PBF equipment requirements: machine systems, build consumables (build platforms, shielding gases, powder spreading devices), auxiliary equipment, machine operating software, and environmental controls.
- Feedstock requirements: purchasing, incoming control, and handling of metal powders.
- Qualification: design checks (part files, orientation, nesting), pre-build checks (maintenance, calibration, chamber environment), process and machine qualification, test specimens, and requalification strategies.
- Preventive maintenance: periodic checks including energy delivery verification, Z-axis movement, oxygen/vacuum control and laser field alignment.
- Manufacturing plan and documentation: structured manufacturing plans, record keeping and traceability for critical applications.
These topics provide a framework for ensuring consistent part performance, repeatability, and conformity in safety-critical environments.
Practical applications
EN ISO/ASTM 52904:2024 is intended for organizations producing metal AM parts where failures could cause immediate hazards-typical sectors include:
- Aerospace and aviation (flight-critical components)
- Medical devices and implants
- Defense and safety-critical systems
- Energy and power generation (nuclear, turbine components)
- Automotive safety systems
Use of this standard supports risk reduction, regulatory compliance, and acceptance of AM-produced critical parts.
Who should use this standard
- AM process and quality engineers
- Additive manufacturing facilities and machine operators
- Materials engineers and metallurgists
- Regulatory bodies and procurement quality teams
- Design engineers specifying AM parts for critical applications
Related standards
EN ISO/ASTM 52904:2024 works alongside other additive manufacturing standards and field-specific specifications (national and international) that detail material properties, test methods and application-specific requirements. Organizations should adopt relevant field standards in combination with EN ISO/ASTM 52904 for full compliance.
Keywords: EN ISO/ASTM 52904:2024, metal powder bed fusion, PBF, additive manufacturing, laser PBF, electron beam PBF, process qualification, feedstock control, manufacturing plan.