Overview
EN ISO/ASTM 52907:2019 - Additive manufacturing - Feedstock materials - Methods to characterize metal powders (published by CEN) defines technical specifications for metallic powders intended for additive manufacturing (AM). The standard standardizes how to document, sample and measure key powder properties - such as particle size distribution, chemical composition, densities, morphology, flowability and contamination - and sets requirements for packaging and storage. It also includes specific requirements for used/recycled metallic powders. Note: this standard does not cover safety aspects.
Key Topics and Requirements
- Documentation & traceability
- Certificates/inspection documents must include a unique reference, supplier name/address, powder lot, product description (including chemical composition and size range), production process (e.g., atomization gas), packaging details (shielding gas, desiccant), date of analysis, storage instructions and traceability identifiers (order number, applicable specs). Inspection documents should comply with EN 10204 and statements of conformity with ISO/IEC 17050-1.
- Sampling
- Samples must be representative of the powder lot and homogeneously split; follow ISO 3954, ASTM B215 or an agreed method.
- Particle size distribution (PSD)
- PSD methods referenced include dry sieving and instrumental techniques (laser diffraction, static/dynamic image analysis). Reported PSD must be linked to the test method used.
- Chemical composition
- Composition must be reported with the test method referenced; supplier/customer agreement determines required analytical precision.
- Characteristic densities
- Apparent and tap densities should be measured using established methods (funnel methods, Scott volumeter, tap density standards).
- Morphology & flowability
- Morphology (shape, satellites) and flow properties must be characterized to predict powder behavior in AM processes.
- Contamination
- Identify potential contaminants (including those from packaging like desiccants) and report levels.
- Packaging, handling & storage
- Specify protective atmosphere, desiccants, handling and storage conditions to preserve powder quality.
- Used powders
- The standard provides specific requirements and documentation expectations for powders that have been previously processed in AM.
Applications - Who Uses This Standard
- Powder manufacturers and suppliers for AM
- Additive manufacturing service providers and OEMs
- Quality, materials and process engineers (QA/QC)
- Third‑party testing laboratories and certification bodies
- R&D teams developing AM powders or reuse/recycling workflows
Related Standards (examples referenced)
This standard helps unify powder characterization vocabulary and testing practice for reliable procurement, quality control and process qualification in additive manufacturing workflows. Keywords: additive manufacturing, metal powders, powder characterization, particle size distribution, flowability, morphology, traceability, sampling, packaging, contamination.