The most important metal powder characteristics to consider include: particle size, shape, density, porosity, surface area and also topography.
Particle Shape: Spherical particles are generally preferred as they pack together more efficiently than non-spherical particles for uniform powder bed density and a better quality final product.
Particle size: The particle size distribution of metal powder is essential to ensure there is uniform spread within the bed and the surface of the final product is not rough. Micromeritics Saturn DigiSizeMI can determine the particle size distribution by using a laser diode and a charge-coupled device (CCD) detector for high sensitivity, resolution and reproducibility of the particle size measurement.